Re: Topband: VE3DO loop

[Michael Walker]

My GoTo RX antenna system is what Tim mentions above (pre-amp and matching
unit) plus the AVA-2.  I think that is now replaced by the DXE-AVA-3.

It really does a number on QRN and give you a bit more SNR.  I have used 2
of them at the same site on a FLEX-6600 in Diversity and it is fun to hear
the signals walk around in your head from ear to ear especially if you can
get some distance between them.  Or, I use the main 160M TX antenna on one
receiver and the AVA-2 on the other.  You'd be surprised how it varies from
RX to RX over the space of a few seconds.

At the Urban site (north Toronto) I have one out in the woods behind the
house and it just makes Urban HF operation a bit more doable.  I don't do
HF from the Urban site much, but I know others that do and it makes the
difference between hearing and not hearing.

Mike va3mw

On Thu, Oct 3, 2024 at 11:18 PM Tim Duffy  wrote:

> Hello Mike;
>
> I use this preamp in the shack - at the end of the 50 ohm Heliax that
> feeds my RX antennas (very low loss):
> https://www.dxengineering.com/parts/dxe-z10046b-pm
>
> I also match my 75 ohm RX antennas to 50 ohms using this:
> https://www.dxengineering.com/parts/dxe-rx75-50-xfmr
>
> The TS-590SG is an excellent radio
>
> 73
> Tim K3LR
>
> -Original Message-
> From: Mike Fischer [mailto:mikebfisc...@comcast.net]
> Sent: Thursday, October 3, 2024 10:54 PM
> To: Tim Duffy
> Subject: Re: Topband: VE3DO loop
>
> Tim, may I trouble you with one more question?
>
> Could you recommend a low noise preamp that you would use with the VE3DO
> (if you would use one of course).
>
> My rig is a TS-590SG and has a dedicated rx ant port as you probably know…
>
> Thanks
>
> Mike
> Sent from my iPhone
>
> > On Oct 1, 2024, at 10:58, Tim Duffy  wrote:
> >
> > Hello Mike;
> >
> > There are a few different "receiver guards" out there. If your receiver
> guard is a RG5000HD from DX Engineering, you should be OK. As a test, I
> have put as much as 25 watts into the RG5000HD and it did not damage the RX
> front end.
> >
> > https://www.dxengineering.com/parts/dxe-rg5000hd
>
> >
> > 73
> > Tim K3LR
> >
> > -Original Message-
> > From: Topband [mailto:topband-bounces+k3lr=k3lr@contesting.com] On
> Behalf Of Mike Fischer via Topband
> > Sent: Tuesday, October 1, 2024 12:47 PM
> > To: topband@contesting.com
> > Subject: Topband: VE3DO loop
> >
> > Hi Tim
> >
> > Is my receiver guard enough ‘protection’ from my 160 inv L approx 60’
> away from a VE3DO loop?
> >
> > Thank you sir!
> > 73
> > Mike, K7XH
> >
> > Hello Ed
> >
> > There is very little interaction between nearby loops. We are studying
> > interlaced loops that are 90 degrees to each other for four azimuth
> > coverage. I would keep the loops at least 25 feet away from other
> radiators.
> > Also be careful of RX overload from nearby TX.
> >
> > 73
> > Tim K3LR
> >
> > Sent from my iPhone
> >
> > _
> > Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
> >
>
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: CY9C

[Michael Walker]

Hi Rudy

Essentially, he is using FlexRadios (FLEX-6700's and FLEX-6500's)  on the
island and a 900Mhz RF link for AF and command and control.  Not far off
what I do with my remote station except I use the internet and his is
900Mhz link is a TCP/IP RF link.

His CW operators are not even on the boat.  They are at home.  Same for his
Digital operators.  The SSB operators are on the boat.  This keeps his
expenses, such as food way down! :)

Next, he did genius work with the amplifiers, and you can watch the video
to learn more about how he kept the weight down and his work with water
cooling and  large capacitors.

For you, there is no reason why you can't move your RF parts to the base of
the tower(s).  Less coax means more RF out on the air and more RF into the
receiver(s).

All this equipment is available off the shelf today and it is plug and
play.  For an engineer like you, it is a child's play setup.

Mike va3mw






On Sat, Sep 7, 2024 at 4:59 PM Rudy Bakalov via Topband <
topband@contesting.com> wrote:

> Is this published/documented anywhere? My in-band tower is about 150’ from
> the main tower and there is significant interference (but manageable )
> between the two radios.
>
> Rudy N2WQ
>
> Sent using a tiny keyboard.  Please excuse brevity, typos, or
> inappropriate autocorrect.
>
>
> > On Sep 7, 2024, at 3:55 PM, Jim Brown  wrote:
> >
> > On 9/7/2024 11:17 AM, Rudy Bakalov wrote:
> >> How does this work? IF this is indeed the case, this would be a great
> solution for multi-op contest stations.
> >
> > Very careful design of both RX and TX antennas and their matching
> networks, physical separation of RX and TX antennas, combined with very
> careful design of very narrow-band pass and reject filters for RX, and
> combiner networks for TX that prevent each TX from seeing the other.
> Combining networks for TV and FM broadcast transmitters have been in common
> use in major cities for more than half a century at sites like the Empire
> State Building, the World Trade Center, Chicago's Hancock Building and
> Sears Tower, and mountaintop sites in the West.
> >
> > Very complex design of both the system and individual components. As one
> of my old EE profs would say, "non-trivial!"  Uses everything I learned in
> EE 60+ years, and at a much higher level than I ever did anything. :)
> >
> > 73, Jim K9YC
> >
> >
> >
> > _
> > Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: CY9C

[Michael Walker]

Mike is correct.

Over the past 1/2 century of operating, a lot of it on HF, nothing has
really changed.  I remember hearing the same thing when SSB showed up to
replace AM.  And, look at that, the world didn't end.  The retired old
farts bitched that SSB wasn't real communications and it would die.

As we moved into 'old fart' phase, we tend to get a bit more stubborn!  LOL

The hobby is what you make of the hobby.  It is 100% up to you what mode
you work, what bad you work and who you work.  Only you can put the radio
into TX.

Mike va3mw

On Sat, Sep 7, 2024 at 11:45 AM JC(Jose Carlos) via Topband <
topband@contesting.com> wrote:

>
> Hi guys
>
> I would like to share my way to see the situation on low bands. Just
> selecting a target, a goal and or an objective, like number of DXCC
> entities worked on 160 m as a goal, you will see no joy until you get
> there, and when you get there, you will be empty because the task is done.
> Instead enjoy the journey, taste any QSO on the way, learn how to fight
> noise. There is aways a new thing to learn.
> When I started back on the 70's. a single DX in one year was a great
> feeling of accomplishment.
> Enjoy the ride!
>
> 73's
> N4IS
>
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: CY9C critism

[Michael Walker]

HI All

I was watching CY9C on 160M last night from about 8pm to 9pm last night on
FT8 and I thought it was pretty interesting.

I am about 1400 km from them at 44 degrees north to give you an idea.

I had no issue working them just after 8pm ET using F/H.  I then called
VA3SK on the phone who is 200km north of me and he worked them on FT8
without issue running about 60 watts on his T-Top vertical and his elevated
radials lying on the ground.

At the same time, I could see 8 or 9 other stations calling him (2's, 4's
and some 9's).  It was clear that CY9C was not decoding them (no, not a
timing issue).

What I did notice was the QRN on 160M last night was HUGE.  I was watching
the waterfall bounce up and down at least 30db and I am sure this impacted
their ability to decode.  I would not be surprised if they had similar
conditions.

After 9pm, I could see them starting to work the 9's.

Just my observations.   And, like others have said, until you have walked a
mile in their shoes ..

Mike va3mw

On Tue, Sep 3, 2024 at 11:49 AM Mike VE9AA ve...@nbnet.nb.ca <
ve...@nbnet.nb.ca> wrote:

> Guys,
>
> What I've noticed here and on the packetclusters is the folks who tend
> to be the most judgmental are those that (generally speaking) have not
> ever operated on a remote Island before.(and put in the blood, sweat,
> tears and greenbacks to get there)
>
> I can tell you from experience, it's never as easy as it seems and
> sometimes, you just have to roll with the punches and do the best you
> can. (and I think they are doing just that and more)
>
> Relax and please give them a break.
>
> You can do it better when you go.
>
> Mike VE9AA
>
>
>
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: N5J (Jarvis) on 160 m

[Michael Walker]

thanks, George.

This morning in ve3 land There was enough signal to work you just as the sun 
started to rise here.

 The QSB was pretty bad, at least for me and I could not hear you on either 
beverage at all. Maybe I have a problem there I need to go look into.

The APF on the 6600 a lot to pull you out of the noise. 

Thanks for the new country on 160 and overall

mike va3mw 


Sent from my iPad

> On Aug 5, 2024, at 5:18 PM, GEORGE WALLNER  wrote:
> 
> Hello Top-Banders,
> The N5J DXpedition is planning to go QRV on Aug 7 (maybe 8th on 160 if there 
> are WX issues).
> 
> While Aug is not the best time to work KH5 on TB, this is the only time we 
> got. To make it easier to work us, here are some key points:
> We will have only one station capable of 160 m (what we call Local 1). The 
> time of the year and the cycle favor the high bands and there will be demand 
> for Local 1 on other bands. Therefore the station will be on 160 only during 
> certain times of the night: At our SS from 0600 to 0645 Z, for NA SR from 
> 0800 to 1000 and if conditions warrant, at our SR for a possible East. EU 
> opening at 1600. (Otherwise 80 m.) After 1000 we will stay on 160 if traffic 
> warrants, otherwise we will QSY to 80. These times will likely change as we 
> gain experience with the conditions.
> Note for NA stations: Don't wait for your SR. From about 1000 JA stations 
> will start coming in with possibly strong signals. You will have a better 
> chance before 1000 and that is why we will start early at 0800.
> Most of you know this, but...: When you hear your correct callsign and 5NN, 
> just reply with 5NN. Don't send your call because it will create uncertainty. 
> Also, when calling, it is better to send you call twice, especially if 
> conditions are poor and the pile-up is dense. Also, we are likely to have a 
> lot of TS noise (you too, probably).
> There is more information on our web-site: https://jarvisisland2024.com/
> 
> GL and CU on TB!
> George,
> N5J/AA7JV
> PS: We will stay on 160 past 0645 if we have a continuous stream of EU 
> callers :-)
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: E51D Approximate Low Band Schedule Sep02

[Michael Walker]

Thanks George for the Q

Here at 6am ET north of Toronto, you are booming in at S7 on my inverted
L.  I didn't even need the beverage antenna.

Mike va3mw

On Sun, Sep 3, 2023 at 7:24 PM Mike Smith VE9AA  wrote:

> I made a couple vy incomplete less than studio quality handheld cellphone
> recordings of E51D on TB this morning a while after we ourselves worked.
>
> I think the K3TN QSO was the only complete end-to-end QSO I was able to
> get(by accident). (I was just hoping to get a peak around my SR, which
> never came)
>
>
>
> I think E51D was in for about an hour…pretty much the same strength as
> this the entire time. If not for the VFO readout, you’d almost think it was
> 20m, the band was so quiet.  Just a lazy Inverted L in the woods here in
> FN66na
>
>
>
> Thanks again.  The RIB is very cool !
>
>
>
> https://www.youtube.com/watch?v=1JFaNHy-ou0
>
>
>
> Mike VE9AA
>
>
>
> Mike, Coreen & Corey
>
> Keswick Ridge, NB
>
>
>
> From: Mike Smith VE9AA [mailto:ve...@nbnet.nb.ca]
> Sent: September 3, 2023 7:58 AM
> To: 'GEORGE WALLNER'; 'topband@contesting.com'
> Subject: RE: Topband: E51D Approximate Low Band Schedule Sep02
>
>
>
> Tnx very much for the 160m QSO George & group.
>
>
>
> I could not get over how gosh darn quiet topband was this morning.
>
> Like 20m !
>
>
>
> You were about 90% copy for about an hour before my SR til SR.
>
>
>
> 73 es safe travels.
>
>
>
> Mike VE9AA
>
>
>
> Mike, Coreen & Corey
>
> Keswick Ridge, NB
>
>
>
> From: GEORGE WALLNER [mailto:aa...@atlanticbb.net]
> Sent: September 2, 2023 9:03 PM
> To: Mike Smith VE9AA; topband@contesting.com
> Subject: Re: Topband: E51D Approximate Low Band Schedule Sep02
>
>
>
> Mike,
>
> More or less the same every SS and SR. Keep an eye on the clusters.
>
> But last night I called CQ on 1810.5 from 0815 to 0930 with only one
> caller, despite multiple RBN reports. I QSY to 80 when no takers on 160.
>
> GL and 73,
>
> George
>
>
>
>
>
> On Sat, 2 Sep 2023 15:45:04 -0300 "Mike Smith VE9AA" wrote:
>
> I hope I am not reading this message 1 day too late.  Been swamped at work
>
> and could not look 4 U before now.
>
>
>
>
>
>
>
> Today was my birthday and I overslept for the 160m @ 0900z thing.  Rats !~
>
>
>
>
>
>
>
> Will you be on again at 0900Z on Sept 3rd/4th too George?
>
>
>
>
>
>
>
> VE9AA (GL/SR ~ 0930z-0945z)
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> Mike, Coreen & Corey
>
>
>
> Keswick Ridge, NB
>
>
>
>
>
>
>
> _
>
> Searchable Archives:
>
> http://www.contesting.com/_topband
>
> - Topband Reflector
>
>
>
>
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Bouvet Island DX-pedition

[Michael Walker]

The lowest band they are getting on is 30M as of the latest message
received a few hours ago.

Mike va3mw


On Tue, Feb 7, 2023 at 1:17 PM Roger Kennedy 
wrote:

>
> I presume that with the problems they are having, they won't be getting on
> 160m?
>
> I already worked it ages ago, so not too bothered personally.
>
> 73 Roger G3YRO
>
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: So2r and diversity receive

[Michael Walker]

For any 6000 series, you want to use SO2R not SO2V as it really isn't
configured for SO2V.

Yes, I use Diversity all the time on 80M and 160M as I have a DX
Engineering Active antenna mounted on the property and for some contests,
it has allowed me to hear things that I can't hear otherwise.  I kill the
power to the Active Whip while in TX which grounds the antenna to protect
it when I am at full power.

When you enable Diversity on a 6600, you get one receiver in one ear and
the other receiver/antenna in the other ear and then you TX on the transmit
antenna.   It is laid out in Section 27 of the FlexRadio SmartSDR manual on
how it works.

Don't confuse Diversity with SO2R operation.  In SO2R you need to configure
OTRSP on the Flex.  There is a Flex white paper on how to do that on the
web site.

The Diversity on the Flex is not noise subtraction that you can do on some
other receivers.

Mike va3mw

On Tue, Dec 21, 2021 at 10:53 AM Ignacy Misztal  wrote:

> Did anybody try SO2R or SO2V contesting on 160 with Flex 6600?
>
> Normally I use diversity of the main TX antenna and beverages. With the TX
> antenna most of the signals are readable but weaker ones are just a trace.
> WIth the beverage often signals from other directions are not present.
>
> When running is slow, I would like to have SO2R. I have a loop antenna far
> away from the transmit that can be positioned to null the transmit antenna.
> The question here is how to route the antenna for the other radio while
> maintaining the diversity. Beverage plus transmit in one ear? The send
> radio with the transmit antenna? Any experiences? I tried a few options and
> they created a havoc, with a lower rate than SO1R.
> Ignacy NO9E
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Saga of NP2J (very long)

[Michael Walker]

Dan

Thanks for sharing and even taking the time to write this up, as that takes
time.

We have ALL been there in so many ways and so many times.  I wish we would
all share those stories as they are a learning experience.

As my Grade 12 Physics Teacher said (back in 1975 or so) and I remember the
time and place and it just stuck:  "Failing is a learning experience"
 Truer words have never been spoken.

73, Mike va3mw


On Tue, Oct 26, 2021 at 11:21 AM Dan Flaig NP2J  wrote:

> "SAGA OF NP2J"
>
> (apologies to CE0XA: see 1965 QST: "Saga of CE0XA" )
> (My "Elmer" was W8ZCT (later W8ON) Gene Liggett (SK), a member of CE0XA,
> First San Felix Operation)
>
>  or
>
> "What a week of Screw ups!"
>
> **
>
> Well,this story is the kind that you usually keep to yourself.
>
> Who wants everyone to know all the dumb stuff you did in order to sooth
> a case of Contest withdrawals
>   and chill a 105 degree fever of "Topband Disease"
>
>
>
> I run a pair of phased Inverted L's each about 60 or so feet high.
> One of the two verticals is near edge of the hillside I am on and it
> catches a lot of wind so I take it down for Hurricane season.
> (See May 2021 CQ magazine page 18 for picture of vertical)
> Most of the bad Tropical storms we get are late in the year; September
> thru early November.
> So I was waiting as long as possible to put the vertical back up.
>
> 
>
> The Saga begins:
>
> Monday:
>
> I had a 70 foot mast built up laying on the ground, with the 1000+ feet
> of rope for guy wires ready to go!
> The bottom of the mast is 2.5" thick wall tubing, tapers down to 1.25"
> Uses 4 sets of four guy ropes.
>
>
> Tuesday:
>
> The big day: Time to raise the mast up in the air!
>
> I decided to use a falling derrick approach to raising the mast.
> I use 30 feet of old 3" Telrex Boom material for either a gin pole or
> pole for falling derrick method.
>
> I am on a hillside so the guy wires are at different elevations.
> So when raising a mast you have to constantly be adjusting guy lengths
> as the mast is raised.
>
> Well, I raised the mast about half way up and I didn't have a guy
> tightened up properly (Big Mistake #1)
>
> So, a gust of wind swung the mast side ways and the mast fell into the
> "Bush" that covers most of my lot.
>
> So much for all that work.
>
> Went inside, grabbed the Rolling stones "Some Girls" disk and fired up:
> "WHEN THE WHIP COMES DOWN"
>
>
> BTW during this time frame the weather was horribly hot and muggy.
> It had been raining off and on,
> just often enough that the humidity was horrible.
> 15 minutes outside working and you are soaked with sweat.
> After an hour or two you are just completely drained and exhausted,
>
> Wednesday and Thursday:
>
> Both days were spent untangling the mess of rope and wire tangled in the
> 15 foot high bush.
> Sweat. Sunburn. More Sweat. Even more sweat.
> Go inside and jump in cold shower. Remove small Tan-tan leaves stuck all
> over sweaty body.
> Repeat.
> Repeat.
> Repeat.
> Fun.
>
> Friday:
>
> OK, ready to try again!
>
> Learning from big mistake #1, I kept the guy wires tight as I raised the
> mast
> Got the mast up about 80% of the way up.
>
> BAM Mast broke in half and came crashing down.
>
> Back inside Jam to "THE WHIP COMES DOWN".again
>
>
> Analyzing what happened, I had mistakenly used a piece of 2" tubing in
> the middle of the mast
>   that was a piece from an old HyGain beam and it was not standard .058"
> wall thickness.
> There was a critcal guy attachment point where this thin walled tubing
> was used.
>
>   SNAP!!! (Big Mistake #2)
>
>
> Now around about this time I am questioning my sanity.
> Is it really worth it?
> What a crazy hobby...
>
> Time for another Stones tune: "Shattered".
>
>
> But, My Elmer, Gene W8ZCT's favorite saying was:
>
> "Keep plugging away"
>
> His other favorite saying was:
>
> "A BIG SIGNAL is a LOT of work"
>
> (Back in 1971 when I was 13 years old,
>   I helped Gene put up a full size rotary 80 meter dipole up 135 feet.
> He knew a thing or two about big signals)
>
>
> Saturday (Contest Day):
>
> At this point was about to say the Hell with it
> I must be crazy (XYL probably thinks so, but she is keeps it to
> herself, hi!)
>
> I haven't gotten this thing up all week... how can I get it up now?
> And if I do, I'll probably be too tired to operate...hi!
>
> But,the weather was getting better, the rain had stopped and the air
> wasn't so thick.
> The Gods were cooperating, weather wise!
>
> W8ZCT's words haunted me:
>
> "Keep plugging away"
> "A big signal is a lot of work"
>
> So I decided not to give up after so much effort.
>
> Why quit when this close to finishing??
> (Even if you are totally exhausted, dehydrated and delerious)
>
> "Keep plugging away"
> "A big signal is a lot of work"
>
> Mast got up in the air at 5PM local time (2100z)
>
> Quickly put u

Re: Topband: One Way Propagation.

[Michael Walker]

All Flex radios measure signal strength regardless of the PreAmp settings.

As well, they correctly calculate the power in the receiving passband.

Early superhet radios use maxim signal that was rectified into a DC voltage
to provide an S meter reading and to also drive the AGC.  This is why when
the AGC is off, there are no S meter readings.  (that is the simple way to
describe it).   It is also likely that they are not well calibrated other
than to show that S9 is -73dbm and plus or minus that is not what you think
it should be.

The 'S' value is also calculated based on the 50ohm input level at the
receiver, not the antenna.  This will also result in different readings
from different users since antenna systems are all different.

In the end, the information is for reference only and is useful for comping
changes at your own station.  Now, if SNR was actually reported then
stations could start to compare similar readings.

Mike va3mw


On Sun, Jan 17, 2021 at 11:10 AM Wes  wrote:

> I'm not going to smack this tar baby, other than to note that Elecraft is
> a
> special case with respect to S-meters.  K3(S) have an "Absolute" mode that
> compensates for preamp gain or input attenuation. So the S-meter becomes a
> decent power meter.
>
> I think it's unconscionable that other manufactures, with microprocessor
> controlled radios, haven't incorporated this.  They should be fully
> capable of
> measuring their own preamp gain and attenuator loss and compensating the
> meter
> accordingly.  I throw into this criticism the TS-890 that I just
> acquired.  My
> goodness, they went to the effort to incorporate a decoder for PSK, of all
> things, but can't provide a decently calibrated S-meter.
>
> Wes  N7WS
>
>
> On 1/17/2021 7:26 AM, Don Kirk wrote:
> >   Hi Roger,
> >
> > Signal report comparisons with the modern radios that often have preamps
> > that you can switch in or out really clouds the picture as well as the
> fact
> > most stations on topband use RX antennas.  Assuming that all
> manufacturers
> > have S meters that are calibrated identical to each other (which is not
> the
> > case), the big question is if the S meter calibration was done with the
> > preamp on or off, and if the person that is giving you a signal report
> has
> > the preamp on or off.  As an example the Elecraft S meter uses the common
> > standard of S9 = 50 uV but the calibration is done with Preamp 1 on.  And
> > when a station is using an RX antenna everything goes out the window
> since
> > RX antennas often have very negative gain, and then if an external preamp
> > is being used that adds another variable.  And if just using a TX antenna
> > for receive there is a lot of difference in each stations antenna
> effective
> > gain (due to ground losses, etc.) that adds another variable.
> >
> > A signal report of S2 or S6 tells me nothing on how well I am being heard
> > since I need to know what your noise floor is too (unless you are telling
> > me how many S units above your noise floor I am ).  What helps me the
> > most is to understand how many dB above your noise floor I am, and that
> is
> > why you will see that when I spot a station on DX Summit, I say how many
> dB
> > the station is peaking and that means how many dB above my noise floor
> the
> > station is peaking (I think this is similar to what you see for signal
> > reports on the RBN).
> >
> > Just FYI,
> > Don (wd8dsb)
> >
> > On Sun, Jan 17, 2021 at 8:04 AM Roger Kennedy <
> ro...@wessexproductions.co.uk>
> > wrote:
> >
> >> Well personally I always give Signal Strength reports from my S Meter .
> .
> >> .
> >>
> >> So it doesn't matter whether my Noise Level is S2 or S6 . . . I'm
> telling
> >> you how strong your signal is at my QTH.
> >>
> >> Roger G3YRO
> >>
> >>
> >> _
> >> Searchable Archives: http://www.contesting.com/_topband - Topband
> >> Reflector
> >>
> > _
> > Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Vertical choke needed?

[Michael Walker]

Wes

That is an option you have and no one is making anything do anything.  It
is 100% up to you.

Happy New Year

On Fri, Jan 1, 2021 at 1:21 AM Wes  wrote:

> Hi Mike,
>
> I've read all of that stuff and more many times.  Frankly, I'm not
> motivated to put a 10 pound lump of ferrite on every wire into or out of my
> shack.  It appears that common-mode chokes and articles about them, have
> become a cottage industry.  I will leave my opinion of the topic at that.
>
> Back to the actual case at hand, a ground-mounted, inherently unbalanced
> antenna, with a bunch of radials.  I contend that the coax outer conductor
> is just another radial.  As an approximation the currents in the radials
> will divide by the number of radials.  Because of its different length,
> there will be asymmetry in the coax "radial" current but it could go either
> way.  So tell me where exactly do I choke this "radial" and why?
>
> Wes  N7WS
>
> On 12/31/2020 8:22 PM, Michael Walker wrote:
>
> Hi Wes
>
> The chokes do a few things.   For transmitting, they keep the RF off the
> feedline.   It is critical for RX and TX.
>
> Just as importantly, they keep RF and Noise off the feedline while
> receiving, and this is what you want.  The quieter you are, the more you
> can hear.
>
> Common Mode Currents can raise make it harder to hear weak signals and I
> have seen and heard this with my own ears, as many others have.  How about
> I reduced my 80M noise floor from S9 to lower than S6.  I'm not sure on
> 160M as I didn't really get going on 160 until after I was loving chokes.
> I now buy them in lots of 50 in bulk from Digikey.
>
> Read these pages.  This is where I started a long time ago
> http://www.yccc.org/Articles/W1HIS/CommonModeChokesW1HIS2006Apr06.pdf.
> Well worth the read.
>
> Next, read Jim's stuff  http://k9yc.com/2018Cookbook.pdf
>
> He is part of this group, and I know he will comment at some point.
>
> Mike va3mw
>
>
> On Thu, Dec 31, 2020 at 9:50 PM Wes  wrote:
>
>> I have the same situation and no choke.  IMHO the transmission line is
>> just
>> another random length radial.  I don't have chokes on any of the others
>> either.
>>
>> Wes  N7WS
>>
>>
>> On 12/31/2020 5:15 PM, Kenneth Silverman wrote:
>> > Hello, I have an inverted-L and the radials are laying on the ground AND
>> > the coax is on the ground too with radials right near the coax run.  Do
>> I
>> > need a choke to stop any feedline coupling/radiation, and if so, where
>> in
>> > the feedline?
>> >
>> > The antenna is in the woods so burying either the radials or coax won't
>> be
>> > easy.
>> >
>> > Many thanks, Kenny K2KW
>> > _
>> > Searchable Archives: http://www.contesting.com/_topband - Topband
>> Reflector
>>
>>
>> _
>> Searchable Archives: http://www.contesting.com/_topband - Topband
>> Reflector
>>
>
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Vertical choke needed?

[Michael Walker]

Hi Wes

The chokes do a few things.   For transmitting, they keep the RF off the
feedline.   It is critical for RX and TX.

Just as importantly, they keep RF and Noise off the feedline while
receiving, and this is what you want.  The quieter you are, the more you
can hear.

Common Mode Currents can raise make it harder to hear weak signals and I
have seen and heard this with my own ears, as many others have.  How about
I reduced my 80M noise floor from S9 to lower than S6.  I'm not sure on
160M as I didn't really get going on 160 until after I was loving chokes.
I now buy them in lots of 50 in bulk from Digikey.

Read these pages.  This is where I started a long time ago
http://www.yccc.org/Articles/W1HIS/CommonModeChokesW1HIS2006Apr06.pdf.
Well worth the read.

Next, read Jim's stuff  http://k9yc.com/2018Cookbook.pdf

He is part of this group, and I know he will comment at some point.

Mike va3mw


On Thu, Dec 31, 2020 at 9:50 PM Wes  wrote:

> I have the same situation and no choke.  IMHO the transmission line is
> just
> another random length radial.  I don't have chokes on any of the others
> either.
>
> Wes  N7WS
>
>
> On 12/31/2020 5:15 PM, Kenneth Silverman wrote:
> > Hello, I have an inverted-L and the radials are laying on the ground AND
> > the coax is on the ground too with radials right near the coax run.  Do I
> > need a choke to stop any feedline coupling/radiation, and if so, where in
> > the feedline?
> >
> > The antenna is in the woods so burying either the radials or coax won't
> be
> > easy.
> >
> > Many thanks, Kenny K2KW
> > _
> > Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Vertical choke needed?

[Michael Walker]

Hi Ken

Chokes at both ends of the feed line are always a good idea.

I have a similar setup to you but with elevated radials and I have Mix 31 
chokes right at the base of the antenna with an UNUN since I am using 75 ohm 
coax and then more chokes at the antenna switch.

You can’t use enough chokes.

Mike va3mw

> On Dec 31, 2020, at 7:16 PM, Kenneth Silverman  wrote:
> 
> Hello, I have an inverted-L and the radials are laying on the ground AND
> the coax is on the ground too with radials right near the coax run.  Do I
> need a choke to stop any feedline coupling/radiation, and if so, where in
> the feedline?
> 
> The antenna is in the woods so burying either the radials or coax won't be
> easy.
> 
> Many thanks, Kenny K2KW
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: FW: CQWW a bust this year

[Michael Walker]

Hi Jim

My point on feedlines is that you can’t assume all is good. You do need to test 
and confirm. 

And chokes are a must. 

Mike va3mw 

> On Dec 1, 2020, at 3:29 PM, Jim Brown  wrote:
> 
> On 12/1/2020 10:00 AM, Michael Walker wrote:
>>  - How old are your feedlines?  Are 100% sure they are as good as the day
>>you installed them?
> 
> Another urban myth -- coax is degraded only 1) by the intrusion of moisture 
> into the dielectric, which occurs at poorly installed or poorly weatherproof 
> connectors or with physical damage to the outer jacket; or 2) UV breakdown to 
> a non-UV-resistant jacket.
> 
>>- Noise -- did you know that 80% of the low band noise is in your own
>>house - fix it as it isn't going to fix itself and don't be so sure to
>>blame someone or something else until you confirm it. 
> 
> YES! There's an app note for this on my website that ran in NCJ several years 
> ago. k9yc.com/publish.htm
> 
> 73, Jim K9YC
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: FW: CQWW a bust this year

[Michael Walker]

you guys complain a lot.  :)

Get on the air and work them.  If you can't hear them either accept it or
do something about it.

Sitting on your but won't make it better.   Ask yourself, what can I do
about it?


   - How old are your feedlines?  Are 100% sure they are as good as the day
   you installed them?
   - Noise -- did you know that 80% of the low band noise is in your own
   house - fix it as it isn't going to fix itself and don't be so sure to
   blame someone or something else until you confirm it.  Quit guessing.
   - Not sure what to do, ask for help.  There is lots of great knowledge
   here.
   - Give up and take up stamp collecting or collect candles.  The good
   thing with candles is that if you don't like them, you can always burn
   them.  They are also the perfect gift.


Mike va3mw


On Tue, Dec 1, 2020 at 12:52 PM uy0zg  wrote:

> Hi Lee
>
> My English is very weak.
> I can't argue with you ..
>
> 1- I agree that there are very good RX antennas.
> But I repeat - there are no super RX antennas.
>
> 2 - if there is a lot of industrial interference near your QTH, a good
> RX antenna will not help.
>
> 3- Very weeks conditions - a good RX antenna similarly won't help ..
>
> Try listening to Europe tomorrow at 13.00 - 15.00 UTC time.
> I am sure there will be no result.
>
> 73
>
> ---
> Nick, UY0ZG
> http://www.topband.in.ua
>
> Lee STRAHAN писал 2020-12-01 19:40:
> > Hmmm, Nick,
> >   I beg to differ with you. I don’t care about scores or countries,
> > zones  worked but I do care about 160 meter receiving antennas.
> > In my opinion your statement is dead wrong.
> > Not looking for a war of words or any more discussion. I will not
> > respond again about this.
> >
> > Lee   K7TJR
> > Hi-Z Antennas
> >
> >
> >
> > -Original Message-
> > From: Topband  On Behalf
> > Of uy0zg
> > Sent: Tuesday, December 1, 2020 7:10 AM
> > To: peter.voel...@t-online.de
> > Cc: topband@contesting.com; Topband
> > 
> > Subject: Re: Topband: CQWW a bust this year
> >
> > Dr Peter
> >
> > Super RX antennas for 160 m do not exist!
> >
> > Exist  :
> > - good conditions
> > - Quiet countryside
> > -  Geography
> >
> > Does not exist :
> >
> > - Miracles
> >
> > 
> >
> > I never envy. They envy me!
> >
> >
> >
> >
> > In CQ WW I only heard three from the USA - K7GM, W1KM, W3UA.
> >
> > These are honest QSOs.
> >
> >
> >
> > ---
> > Nick, UY0ZG
> > http://www.topband.in.ua
> >
> > dj...@t-online.de писал 2020-12-01 16:38:
> >> It´s amazing, the probably envious stations always suspect others with
> >> their better antennas and perhaps better operation to use web sdr.
> >>
> >> 73
> >> Peter
> >>
> >> -Original Message-
> >> From: Topband
> >> [mailto:topband-bounces+dj7ww=t-online...@contesting.com]
> >> On
> >> Behalf Of uy0zg
> >> Sent: Dienstag, 1. Dezember 2020 14:19
> >> To: Tom | SP5XO
> >> Cc: topband@contesting.com; Topband
> >> Subject: Re: Topband: CQWW a bust this year
> >>
> >> Hi
> >>
> >>   Weeks conditions ?
> >>
> >> For the best of the ex USSR countries, this is not a problem!
> >>
> >>
> >> Very good HIGH + WEB SDR+ very kind and democratic American judges  =
> >>
> >>
> >> super result is ready!
> >>
> >> http://lists.contesting.com/archives//html/3830/2020-11/msg08693.html
> >>
> >>
> >> .
> >>
> >> 73 !
> >>
> >> ---
> >> Nick, UY0ZG
> >> http://www.topband.in.ua
> >>
> >> Tom | SP5XO ? 2020-12-01 14:21:
> >>> Compare to recent weeks conditions were marginal during CQWW. Only
> >>> two Zone
> >>> 4 stations were audible here and it took long time to work them.
> >>> Whereas a
> >>> week ago band was wide open from MI, IL to CO or even down to TX.
> >>> I worked only mults and Dx's this time. Only 13 stations from Zone 5
> >>> in my log. Except for VY2ZM all NA's were weak including KC1XX and
> >>> W3LPL!
> >>> Hopeful things improve for next weekend and will work some more in
> >>> ARRL 160.
> >>> CU
> >>> Tom
> >>> sp5xo
> >>>
> >>> Conditions certainly didn't favor 160 over the weekend CQWW contest
> >>> here in
>  Florida at least.
> 
>  Looking back in 2019 I worked 50 countries on 160 during CQWW, this
>  year it was only 17, only 3 Europeans and those were very weak. I'm
>  sure the lack of expeditions due to CV-19 played a part but on whole
>  I think many guys in hindsight will be glad they didn't spend the
>  money to go.
> 
>  Maybe things will pick up next weekend for the ARRL 160 test though
>  that tends to be largely a USA to USA test and it is hard to hear
>  the DX through the local mob
> 
>  CU guys in the pile up
> 
>  Dave
>  NR1DX
>  --
>  Dave manu...@artekmanuals.com www.ArtekManuals.com
> 
> 
> 
> >>> _
> >>> Searchable Archives: http://www.contesting.com/_topband - Topband
> >>> Reflector
> >> _
> >> Searchable Archives: http://www.contesting.com/_topband - Topband
> >> Reflector
> >>
> >> ___

Topband: Cycle 25 predictions

[Michael Walker]

It isn't about the 11 year Solar Cycle.  That is just the symptom.

It is about the 22 year Hale Cycle.

Well worth the watch.  I won't spoil the ending.

Mike va3mw

https://youtu.be/lRNJPkQPo_g
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Remote control set-up at VE6WZ

[Michael Walker]

Wow Steve

That is great.  Like you, I have been doing something similar for about 16 
years now.  

I did a similar video on my remote station.  
https://www.youtube.com/embed/_QxapW0bMLc.   I am away from mine for months on 
time.

BTW, I did hear you on 160 CW last night.

73, Mike va3mw


> On Nov 13, 2020, at 11:13 AM, VE6WZ_Steve  wrote:
> 
> I have received a number of emails asking me how I control my remote station 
> from home or when away.
> This new video compliments my outside and inside tours of my remote station.
> 
> I show what my operation position is like at home, and I talk about why my 
> radio of choice now is the Flex instead of the K3.
> In the video I show what the Flex panadapter waterfall looks like when 
> operating on 160m.
> 
> https://youtu.be/fd6DkobdlK4 
> 
> btw…last night was another fantastic trans-polar opening.  52 EU QSOs with 6 
> or 7 new calls never worked before on 160m!
> 
> 73, de steve, ve6wz
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Checking the integrity of 75 ohm cable

[Michael Walker]

RigExpert has a variety of Antenna Analyzers that have a built in TDRs.

I highly recommend them.

Mike va3mw

On Fri, Oct 16, 2020 at 5:15 PM Jim Brown  wrote:

> On 10/16/2020 1:26 PM, Gary Smith wrote:
> > What would be an easy way to tell if these
> > coax have been damaged in some way?
> >
> > I do have an old MFJ-259B
>
> That might give you a clue if the cable is open or shorted, but it's
> unlikely to show chewing that doesn't cause an open or short, but allows
> water intrusion, etc.
>
> The best tool is a vector analyzer that includes software/firmware with
> a very good TDR function. I use the VNWA3EC, built by hams in the UK
> from a design by DG8SAQ, who also does both firmware and software.
>
> https://www.sdr-kits.net/DG8SAQ-VNWA-models
>
> The TDR function in this unit is really excellent, and can be used with
> the antenna connected. The procedure is to do a very wide sweep (I
> usually sweep 50 - 500 MHz) so that fine detail shows up clearly.
> Software then does an inverse FFT on the sweep to get the TDR, and
> allows the user to choose which of five different windowing functions
> provide the clearest view of the measurement.
>
> There are ultra-cheap VNAs around, but I don't know the capabilities of
> their operating software.
>
> One way I test my RX antennas is to use them to listen on the AM BC band
> while I switch directions, using this FCC website to tell me who is
> where on each frequency.
> https://www.fcc.gov/media/radio/am-query
>
> 73, Jim K9YC
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Windows 10 Update heads up

[Michael Walker]

>
> sooo.
>
>
Just to tell the other side of the story.  I have 5 computers, all Windows
10 Pro.  3 of them used on multiple Flex radios since 2013.  And, as you
have read, corruption does not affect 100% of the amateur install base.
Nor does it affect any where near 100% of the Flex install base (I have
inside data on this).

I have never had any sound card (DAX) corruption or CAT corruption.  NADA.

While that doesn't help those that do, there is something different between
these computers.

On the surface, my computers have the following:


   - All are built by me.  Not an OEM build (meaning the computer didn't
   come with an OS).   Clean install from a Win 10 Install USB Key
   -  All are Win 10 Pro and I have paid for all unique licenses - I think
   it is well worth the extra expense to Win 10 Pro.
   - No extra anti-virus - I use the AV windows comes with - Windows
   defender -- And, this would be someplace to look deeper and I wonder if
   some inadvertently have 2 AV  programs running - this is a big no-no.
   There really is not need to install an AV since it has been built into
   Windows for some time.


   - The PC at my remote station has no AV installed at all
   - Firewalls are turned off on all NIC cards and all NIC cards are marked
   Private (not Public)
   - No programs are auto started other than stock

When I see an update scheduled, I just click on it to make it happen.

it would be nice if we had some more empirical data to figure out what is
different between those that are impacted and those who have no issue at
all.

YMMV

Mike va3mw
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: FT8 clutter on the DX Cluster

[Michael Walker]

Because they can.  The DX cluster is like bragging on Twitter.   :)

May I suggest that you run some filters that are related to your cluster
login that only allow spots for those bands you are interested in.

Mike va3mw




On Tue, May 12, 2020 at 7:58 PM Roger Kennedy 
wrote:

>
> Why oh why do some people post on the DX Cluster every FT8 station they
> have
> heard?
>
> One GM station this evening posted 21 stations . . . none of them were even
> DX !
>
> I don't even see why you would post ANY on the DX Cluster . . . I thought
> the whole point of FT8 is that you leave your computer listening on the
> same
> frequency, so surely any stations will just come up on the screen?
>
> Whereas posting the frequency of a CW or SSB DX station on the Cluster is
> really useful to help people find those stations, and attempt a QSO.
>
> Also . . . as others have said, DX propagation is still pretty good on 160m
> most nights . . . but despite lots of CQ calls by myself and other EU
> stations, we're often getting no replies!  (despite RBN reports being good)
>
> 73 Roger G3YRO
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: RBN and cluster spots

[Michael Walker]

Hi All

Every cluster you connect to has very similar filtering, you just have to
issue the commands.

On my cluster, va3mw.dxcluster.org:41112, I only share spots that come from
my zones and neighbour zones which limits the noise of the larger cluster
nodes.

So, if you are in the North East of North America, you might find it a bit
more realistic data unless you want to see the spot of G3 that worked the
I2.  :)

Mike va3mw


On Mon, Mar 9, 2020 at 3:03 PM Henk Remijn PA5KT via Topband <
topband@contesting.com> wrote:

> I am using the VE7CC client software.
>
> It has great filter capabilities.
>
> http://www.bcdxc.org/ve7cc/default.htm#prog
>
> Halfway the page are the install instructions.
>
>
> Install
>
>   * Download CC User Full Version (ver 2.421)
> 
>   * Unzip
>   * Run "setup.exe"  Do not install the program in the default directory
> of "C:\Program Files.."  Install in C:\Ve7cc
>   * Create a shortcut to "ve7cc.exe"
>
> After installing use the update option to update to the latest version.
>
> 73 Henk PA5KT
>
>   * Click the shortcut
>   * Press the "Connect" button at the top center of the screen.
>
> Op 9-3-2020 om 18:47 schreef Roger Kennedy:
> > Steve, I agree about getting response only when you've been spotted on
> the
> > DX Cluster (which is why I sometimes resort to spotting myself after
> endless
> > CQ DX calls - then suddenly I get lots of calls !)
> >
> > But I only use RBN to check my OWN signals . . . how do you use it to
> check
> > ANY DX signals on 160 ?
> >
> > I can't even see how you configure RBN to only show signals from certain
> > areas (like NA), so I have to put up with all the EU spots on RBN (which
> I'm
> > not interested in)
> >
> > I guess you'll tell me there IS a way of doing it . . . but presumably
> the
> > reason you only get responses when you've been spotted on the DX Cluster
> is
> > because others are the same as me !
> >
> > Roger G3YRO
> >
> >
> > _
> > Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Cheating etc

[Michael Walker]

To put it simply

You are only cheating yourself.

It is not up to me to control other adults.

Mike va3mw


On Fri, Feb 14, 2020 at 6:43 AM Roger Kennedy 
wrote:

>
> Personally, I don't really care what anyone else does !
>
> I achieved DXCC on 160m many years ago . . . and stopped even counting new
> countries once I had worked over 200.  (it used to be really hard, as so
> few
> Countries were licensed for Top Band, but these days almost everyone is)
>
> I KNOW I worked those stations . . . but never bothered collecting QSL
> cards
> or applying for some piece of paper to put on the wall. To me it's about
> the
> SATISFACTION of having achieved something.
>
> In fact - as I've stated before on here - I'm really not bothered about
> working somebody in a rare country . . . it's working ANY distant station
> on
> Top Band that gives me a buzz . . . and regardless of how many times I've
> worked that station before.
>
> The same goes for Contests . . . decades ago I used to actually enter Top
> Band contests . . . but it really holds no interest for me having hundreds
> of quite easy contacts hour after hour . . . I now just come on to try and
> pick out the DX stations in-between all the strong Europeans (again, a
> unique problem on 160m, as there is no Skip) - THAT to me is an
> achievement.
>
> Again, I am not bothered about the people using their Computer to have
> contacts . . . it would never interest me in a million years, as I feel
> there is no operator or equipment skill involved, so zero satisfaction.
> But
> hey, if it floats some people's boats, that's up to them.
>
> The only thing that DOES bother me is when people stop coming on
> Human-based
> modes on 160m because they think the only activity is on the Computer modes
> !
>
> If more people make an effort to come on the band (instead of complaining)
> there WILL be more CW & SSB DX activity on Top Band !
>
> Anyway . . . hope to work some of you in the Contest this weekend. (Had to
> put my antenna back up yesterday, as it came down in the Gales we had over
> here !)
>
> 73 Roger G3YRO
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: recording off the air

[Michael Walker]

Hi Terry

For some contests, such as CQWW, it is a requirement if you are a big top
gun station.  For most of us mortals, it isn't required.

I've used QSOOrder many times and it works very well.

Mike va3mw


On Wed, Jan 22, 2020 at 11:24 PM terry burge  wrote:

> Hello again,
>
> Thanks for the ideas for recording contacts. I can't imagine trying to
> record a contest while working it and that is not my purpose here. But on
> and important 'new country' qso I'd like to have something to fall back to
> incase I screwup putting the report in my log. The Zoom recorders look like
> a way to do this if I can figure out how to have on my headphones and
> record at the same time. I do have an Olympus VN-6000 that I use calling CQ
> that should also work. Not sure about pugging the mic line into the back of
> my K3 but I think that will work. Could prove to be handy providing
> recordings of others on the air as well. Not something I've done in the
> past.
>
> Anyway, thanks for the suggestions.
>
> Terry
> KI7M
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: recording off the air

[Michael Walker]

At the audio level, QSOOrder integrates into N1MM.

https://github.com/k3it/qsorder

Mike va3mw

On Wed, Jan 22, 2020 at 10:10 AM Tree  wrote:

> As the "instructor" for the ethics class at Dayton's Contesting University
> this year, I feel compelled to add a bit to the thought about "top
> contesters" recording contests for possible review.
>
> Top contesters do not consider using a recording to improve the accuracy of
> their submitted log as being ethical.  The contest ends at the time stated
> in the rules.
>
> Top contesters might review such recordings to learn about their operating
> process and make improvements.  They also might review their log check
> report to understand why a QSO was busted.
>
> Just didn't anyone reading to feel that using a recording to correct
> callsigns or exchange information was "okay" in a contest.
>
> Tree N6TR
>
> On Tue, Jan 21, 2020 at 10:55 PM W0MU Mike Fatchett  wrote:
>
> > Dxlabs supports this.
> > https://www.dxlabsuite.com/dxlabwiki/RecordAudioN1MM logger+ has a
> > recording mechanism but there is a bunch of apps that could do this.  As
> > all the top contesters for many contesters much record the contest for
> > possible review.
> >
> > W0MU
> >
> > On 1/21/2020 11:25 PM, terry burge wrote:
> > > Hi folks,
> > >
> > > Is there some kind of software or accessory unit that would have the
> > ability to record off the XCVR and easily run it back to listen again to
> > the exchange? I'm kind of thinking of something like digital TV where you
> > can run it back quickly while watching some show. Seems like it would be
> > handy while trying to work the weak ones to make sure you get calls right
> > and info right. Being a bit hard of hearing and having got so excited
> about
> > working a new one I missed the report for me (Z63FB) and that bugs me.
> > Having bad hearing also has an effect apparently on short term memory to.
> > Thank the lord for my logging program (N3FJP).
> > >
> > > Terry
> > > KI7M
> > > _
> > > Searchable Archives: http://www.contesting.com/_topband - Topband
> > Reflector
> >
> > _
> > Searchable Archives: http://www.contesting.com/_topband - Topband
> > Reflector
> >
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Remote receiver deafness. Was: New Modes, Systems, etc

[Michael Walker]

On and off I have had a Web SDR available to some.

To back up with Vince is saying, it is often on a 'left over antenna', or
mh HF6V.  Good enough for 40 and up and certainly not good enough for 80 or
160M.

This is what you are seeing with these.

Mike va3mw


On Sat, Jan 11, 2020 at 7:56 PM DXer  wrote:

> I had private correspondence about this, so here is additional information.
>
> Some of these remote receivers do have 'bad' antennas, others not so.
> For 'local' reception, one does not need much.
>
> I have an AirSpy HF+ SDR with a 'bad' Mini-Whip antenna in the backyard,
> at only 4 meters above the ground. It's performance is good enough to
> receive LW broadcasting stations from Europe, and North Africa. But they
> use MegaWatts, you say? Fair enough, but it's around 200 kHz.
>
> Enough MW stations in North America, located from 500-1000 km from my
> place. But they use KiloWatts, you say? Not all of them, lots of so
> called graveyard stations run much less than 1 kW, and the MW band is
> from 520 to 1,720 kHz.
>
> Navtex on 518 kHz, using around 1 kW of power. Finally, NDBs. These can
> use as little as 25 Watts from 120 to 300 kHz.
>
> These remote receivers are a problem for the integrity of the hobby,
> regardless of the antenna used.
>
> Funny enough, they are not 'automatically' good for cheating with FT8,
> due to latency issues, unless the SDR is a Perseus, but most aren't.
> They are usually Kiwi, AirSpy, RTL-SDR.
>
> 73 de Vince, VA3VF
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: New Modes, Systems, etc

[Michael Walker]

This list has the largest collection of grumpy old farts possible and I say
that with some reality and kindness.  :)

You know who you are.  You sit in your shack and do nothing but complain.

How many of you GoF's have actually done any mentoring or Elmering.  What
have you done to protect and build the legacy of amateur radio?  When was
the last time you invited anyone into your shack?

Clearly, if you are not part of the solution, you are actually part of the
problem.

I have lost track of how many club meetings I have presented at, but it is
a significant number.  I can tell your type as your eyes glass over at new
ideas.  You have no desire to learn or expand your skills.  This is NOT
what got you to this point in the hobby.  Look back to your early years of
Ham radio?  Wow, there was so much cool stuff to learn, try and even fail
at.  Now, you are afraid to give anything new a shot.

“Once you stop learning, you start dying” –Albert Einstein

Mike va3mw
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: FT-8 Contest would be great for Topband

[Michael Walker]

Yes, the success is staggering.

There are graphs that show the FT8 usage and I would paste it into the body
of the email, but I can't.  Clublog published it somewhere.   It shows a
deep decline on CW and a minor decline on SSB and this was 2 years ago.
https://ei7gl.blogspot.com/2019/03/club-log-stats-show-rise-of-ft8-mode-in.html

Geral K5SDR summed it up well here:
https://www.flexradio.com/ft8-tipping-point-for-ham-radio/

Mike va3mw


On Fri, Jan 10, 2020 at 2:06 PM W0MU Mike Fatchett  wrote:

> 1.5 million hits for FT8? WOW!
>
> On 1/10/2020 11:38 AM, Herbert Schoenbohm wrote:
> > I know the purists will flame me for this but look at the
> > frequency conservation this would present and look at the activity
> > statistics for only the past couple of hours,
> >
> > AIf the contest was designed well sub-channels could be recommended for
> the
> > various continents as Stew Perry use to urge for intercontinental QSO's
> > from 1825-1830.
> >
> > Here are the amazing stats for only two hours.
> >
> > Modes over last 2 hours
> > Mode Count
> > FT8 1549146
> > FT4 41733
> > JS8 7895
> > CW 6894
> > PSK31 433
> > JT65 383
> > OPERA 132
> > JT9 65
> > MSK144 37
> > OLIVIA 22
> > OLIVIA 8 22
> > JT6M 18
> > ROS 14
> > DOMINO 13
> > PI4 12
> > OLIVIA-8 9
> > PSK63 9
> > FSK441 8
> > JT65B 7
> > WSPR 6
> > RTTY 5
> > MT63-500 1
> > SIM31 1
> > THOR 1
> > THOR22 1
> > PSK 1
> > CONTESTI 1
> >
> > What do you think?
> >
> >
> > Herb, KV4FZ
> >
> >
> >
> >
> > _._,_._,_
> > --
> > Groups.io Links:
> >
> > You receive all messages sent to this group.
> >
> > View/Reply Online (#3244)
> >  | Reply To Group
> > <
> ft8-digital-m...@groups.io?subject=Re:%20Re%3A%20%5BFT8-Digital-Mode%5D%20Number%20of%20WSJT%20Users
> >
> >   | Reply To Sender
> > <
> k2...@aol.com?subject=Private:%20Re:%20Re%3A%20%5BFT8-Digital-Mode%5D%20Number%20of%20WSJT%20Users
> >
> >   | Mute This Topic  | New Topic
> > 
> > _
> > Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: K9AY Loop not performing

[Michael Walker]

Hi Pete

That is one interesting find.  I'm going to have to do some tests and see
if I have the same issue.

My RX antenna and TX antennas are about 2 wavelengths apart and both are
very well choked into a 2x8 switch.

I am going to have to give this some thought.

73, Mike va3mw

On Mon, Dec 9, 2019 at 4:26 PM N4ZR  wrote:

> Thank you to everyone who responded to my query.  The transmitting
> antenna was indeed coupling both noise and signals into my K9AY loops.
> I disconnected it at the feedpoint and the noise level on the RX antenna
> dropped 4 S-units!  Fooling around today in steady rain (which may
> affect the quality of ground, I'd expect).  I  was amazed, playing with
> the high end of the AM broadcast band, to be able to select one of two
> stations on the same frequency, just by switching the direction of the
> loop array.  I can hardly wait for European sunrise.
>
> 73, Pete N4ZR
> Check out the Reverse Beacon Network
> at , now
> spotting RTTY activity worldwide.
> For spots, please use your favorite
> "retail" DX cluster.
>
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Topband: WSPR for 160M

[Michael Walker]

If you have never tried WSPR or watched the WSPR Map then you are missing a
great beacon tool for openings and RF paths.

WSPR is a beaconing tool and I have used it very successfully as a
propagation tool.

Mike va3mw
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Computer noise

[Michael Walker]

I have now tossed all my Amateur switching supplies (almost). The older
they got, the noisier they got.

The last one to go was the Alinco DM-330V.   I really liked this as a bench
supply, but its time has come.

It was bad on 160M and even bad on 6M.  I replaced it with an old iron
Astron RS70 that I had lying around and that cleared that up.  Birdies all
gone.

However, I did get a 30A SolidState Powerwerx from the office to test and I
have to admit is is pretty quiet on HF.

If you really want to be sure, limit you switching supplies and/or have a
good listen to them.

Mike va3mw



>
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: H40TT on 160m

[Michael Walker]

I wasn't hiding anything.  My callsign is in my email address.

Just tired about hearing from all the whiners.  It is like they are being
told to use it or .. what ever.

The comment was posted full well knowing that it was going cause another
sh*tstorm so to speak.

Mike va3mw

On Mon, Nov 25, 2019 at 10:43 PM Doug Renwick  wrote:

> Well Mr Walker you don't even have the balls to sign your message. Your
> problem is you can't handle the truth and have to resort to name calling
> which makes you the bully. Good work Alan!!
> Doug
>
> "The difference between stupidity and genius is that genius has its
> limits." Albert Einstein
>
> -Original Message-
> From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of
> Michael Walker
> Sent: November-25-19 8:30 PM
> To: Alan Swinger
> Cc: Wes; topband@contesting.com
> Subject: Re: Topband: H40TT on 160m
>
> Nice.
>
> Your comment was really not even worth making. Let’s call it bullying
>
> > On Nov 25, 2019, at 4:55 PM, Alan Swinger 
> wrote:
> >
> > So, your computer worked him while you were out of the room and not at
> the rig!? If only there was an award for computers vice operators. - Alan
> K9MBQ
> >
> >
> > -Original Message-
> >> From: Wes 
> >> Sent: Nov 25, 2019 7:42 AM
> >> To: topband@contesting.com
> >> Subject: Re: Topband: H40TT on 160m
> >>
> >> Conditions are awful with horrible noise this AM.  Haven't figured out
> whether
> >> it is local or what. I don't need H40 and I'm defiantly not a fan of
> FT8.
> >> Nevertheless, I set up the rig and unsuccessfully called for awhile
> before
> >> deciding to come into the office and check my email.
> >>
> >> I just stepped back into the shack and see that "I" worked him at
> 12:26:30 with
> >> a -15 signal report.
> >>
> >> Wes  N7WS
> >>
> >>> On 11/25/2019 4:46 AM, Gary Smith wrote:
> >>> I finally worked them, just a couple
> >>> minutes ago FT8 @ 11:30Z, on their 1.836
> >>> band plan, Right in the middle of my gray
> >>> line, 6:30AM local.
> >>>
> >>> I'm lucky to hear them at this time, I'm
> >>> 75' from AMTRAK and gray line is always
> >>> obliterated heavy commuter rail traffic
> >>> with me being 5 minutes away from New
> >>> London, CT, a major hub between Boston &
> >>> NYC. During the contest I missed several
> >>> gray line contacts because I couldn't hear
> >>> anything for 30 seconds with each passing
> >>> train and that's the busiest commuter
> >>> time.
> >>>
> >>> Grouse grouse...
> >>>
> >>> One of the impressive things I notice with
> >>> JTDX's FT8 waterfall, while the P3 shows
> >>> bright red obliteration of the signal and
> >>> headphones are also obliterated when the
> >>> trains pass, with the JTDX waterfall there
> >>> is almost no indication of the RFI from
> >>> the train passing. I was -22 & they were
> >>> -18 so the signals were low indeed.
> >>>
> >>> Ah well, they're in the log now. Love 160,
> >>> it's never a sure bet.
> >>>
> >>> 73,
> >>>
> >>> Gary
> >>> KA1J
> >>>
> >>
> >> _
> >> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
> > _
> > Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: H40TT on 160m

[Michael Walker]

Nice.   

Your comment was really not even worth making. Let’s call it bullying

> On Nov 25, 2019, at 4:55 PM, Alan Swinger  wrote:
> 
> So, your computer worked him while you were out of the room and not at the 
> rig!? If only there was an award for computers vice operators. - Alan K9MBQ
> 
> 
> -Original Message-
>> From: Wes 
>> Sent: Nov 25, 2019 7:42 AM
>> To: topband@contesting.com
>> Subject: Re: Topband: H40TT on 160m
>> 
>> Conditions are awful with horrible noise this AM.  Haven't figured out 
>> whether 
>> it is local or what. I don't need H40 and I'm defiantly not a fan of FT8. 
>> Nevertheless, I set up the rig and unsuccessfully called for awhile before 
>> deciding to come into the office and check my email.
>> 
>> I just stepped back into the shack and see that "I" worked him at 12:26:30 
>> with 
>> a -15 signal report.
>> 
>> Wes  N7WS
>> 
>>> On 11/25/2019 4:46 AM, Gary Smith wrote:
>>> I finally worked them, just a couple
>>> minutes ago FT8 @ 11:30Z, on their 1.836
>>> band plan, Right in the middle of my gray
>>> line, 6:30AM local.
>>> 
>>> I'm lucky to hear them at this time, I'm
>>> 75' from AMTRAK and gray line is always
>>> obliterated heavy commuter rail traffic
>>> with me being 5 minutes away from New
>>> London, CT, a major hub between Boston &
>>> NYC. During the contest I missed several
>>> gray line contacts because I couldn't hear
>>> anything for 30 seconds with each passing
>>> train and that's the busiest commuter
>>> time.
>>> 
>>> Grouse grouse...
>>> 
>>> One of the impressive things I notice with
>>> JTDX's FT8 waterfall, while the P3 shows
>>> bright red obliteration of the signal and
>>> headphones are also obliterated when the
>>> trains pass, with the JTDX waterfall there
>>> is almost no indication of the RFI from
>>> the train passing. I was -22 & they were
>>> -18 so the signals were low indeed.
>>> 
>>> Ah well, they're in the log now. Love 160,
>>> it's never a sure bet.
>>> 
>>> 73,
>>> 
>>> Gary
>>> KA1J
>>> 
>> 
>> _
>> Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Less FT8, more DX with power failures

[Michael Walker]

More than once now, I found my 160m noise related to a plugged in and not in 
use power tool battery charger. 

Mike va3mw

> On Nov 19, 2019, at 3:35 PM, WHYTE  wrote:
> 
>  Always be ready for a local power failure - that’s the only time I can hear 
> any DX. Incredible to hear how fantastic 160m really is in a power failure ; 
> without all the QRM from digital crap, SMPS and powerline noise! Be prepared 
> with batteries/ generator for those amazing “ low band noise “ chances! 
> Unfortunately, it also explains why FT8 is taking over. It’s the best chance 
> for a high noise floor contact and without listening to the RFI hash.
> Greg Ve3fax
> 
>> On Nov 19, 2019, at 12:00 PM, topband-requ...@contesting.com wrote:
>> 
>> Send Topband mailing list submissions to
>>   topband@contesting.com
>> 
>> To subscribe or unsubscribe via the World Wide Web, visit
>>   http://lists.contesting.com/mailman/listinfo/topband
>> or, via email, send a message with subject or body 'help' to
>>   topband-requ...@contesting.com
>> 
>> You can reach the person managing the list at
>>   topband-ow...@contesting.com
>> 
>> When replying, please edit your Subject line so it is more specific
>> than "Re: Contents of Topband digest..."
>> 
>> 
>> Today's Topics:
>> 
>>  1. Wednesday 160m DX CW Activity Night (Roger Kennedy)
>>  2. ZD7W (Doug Renwick)
>> 
>> 
>> --
>> 
>> Message: 1
>> Date: Tue, 19 Nov 2019 14:42:29 -
>> From: "Roger Kennedy" 
>> To: 
>> Subject: Topband: Wednesday 160m DX CW Activity Night
>> Message-ID: 
>> Content-Type: text/plain;charset="us-ascii"
>> 
>> 
>> Well I posted a reminder last week . . . but it didn't appear til Thursday !
>> 
>> So hopefully we can stir up activity this Wednesday.
>> 
>> Lots of people complain about all the FT8 activity, and the lack of CW
>> activity on Top Band these days . . . well this is an attempt to get more
>> stations on the band on CW on the same evening !  There will only be more CW
>> DX activity if people make the effort to come on and have proper QSOs.
>> 
>> There are still plenty of stations who come on 160m on CW . . . I heard
>> around 100 calling the station in Nigeria the other night. But you never
>> normally hear those people on the band !  I find that very sad . . . that
>> those stations have a reasonable 160m setup, but only come on to have ONE
>> QSO !!
>> 
>> Personally, I get a buzz out of working EVERY station on 160m that is a few
>> thousand miles away, regardless of where they are, or how many times we've
>> worked before.
>> 
>> 73 Roger G3YRO
>> 
>> 
>> 
>> --
>> 
>> Message: 2
>> Date: Tue, 19 Nov 2019 10:27:38 -0600
>> From: "Doug Renwick" 
>> To: 
>> Subject: Topband: ZD7W
>> Message-ID: <1857D7E19E66413AAB51E698FB42D45D@DOUG8PC>
>> Content-Type: text/plain;charset="us-ascii"
>> 
>> Oliver, ZD7W had a great signal into the west last night. The man is
>> obviously a great CW operator. 
>> 
>> Doug
>> 
>> There is nothing so dangerous as speaking the truth.
>> 
>> 
>> 
>> 
>> --
>> 
>> Subject: Digest Footer
>> 
>> ___
>> Topband mailing list
>> Topband@contesting.com
>> http://lists.contesting.com/mailman/listinfo/topband
>> 
>> 
>> --
>> 
>> End of Topband Digest, Vol 203, Issue 15
>> 
> 
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: A Bit of Zone 2 History Was Made Last Week

[Michael Walker]

It is clear that the 160M is just full of grumpy old farts.  That is ok, we
are getting used to it.  :)

You'd think someone is making them use FT8.  No one said you had to use
it.  If you don't like it, just spin the dial or turn the radio off.

I have a pretty good hearing 160M station.  I see maybe 5 guys on CW.  For
you 5, that is awesome!!

I see double to triple  that on FT8.   If you want the screen shot that
shows the activity, just ask me and I'll send it to you.

For all you guys b*tching about FT8, how many actually turned on the radio
an called CQ?  This week?  This month?  This year?

I'm trying to work new countries on 160M CW.  I might hear 1 a month in
CW.   Maybe.Not true in FT8.  The one and only exception is if there is
a contest.  Then, you guys don't get on because the band is then too
crowded.

Sounds like you need a new hobby, unless your hobby is complaining.

73 all.  Maybe I'll work you on the air.  Feel free to yell at me if you
hear me.  LOL

Mike va3mw



On Sun, Nov 10, 2019 at 7:10 PM Eugene Popov /RA0FF/ via Topband <
topband@contesting.com> wrote:

>
>
> Hi,
> Unfortunately, I learned very late about work plans from the 2 zone. I
> heard a short, quiet squeak in the CW, and later decoded the signal
> on 1840. Unfortunately, all the work was for JA friends, RX was only in
> 1908.
> May be later on 1840, but I’m no decode...
> For me, the 2 zone is the only one that is needed for 160m. Usually, guys
> coming to CQWW’s work only for Europe, no chance for us (Far East Asia).
> But I continue to hope and listen band :)
>
> 73! Eugene, RA0FF
> http://wwwq.qsl.net/ra0ff /
> https://twitter.com/ra0ff/
>
>
> >Пятница, 8 ноября 2019, 21:50 +11:00 от k1zm--- via Topband <
> topband@contesting.com>:
> >
> >08 Nov 2019
> >
> >
> >Hi Gang
> >Jeff and I just got back from a one week "mini dx'pedition" to ZONE 2.
> Three ferries and about a 2400km roundtrip drive to 50.112 North from PEI
> was made with the express purpose of giving ZONE 2 to our JA 160m friends.
> >Prior to our trip, only one single JA station had ever managed a qso with
> ZONE 2 on Topband and that was JA7HMZ about 35 years ago - so this zone was
> much needed by most 160m JA dx'ers.  Quite of few of our 160m JA friends
> have been stuck at 39 zones on 160m for many years - so this was our chance
> to help them get ZONE 2 for #40.
> >So without too much bandwidth - here is our report:
> >QRV 31 October to 04 November 2019
> >Roughly 350 stations worked on Topband - in 42 DXCC countries (we could
> have worked more but we took lots of time off in order to sleep and then
> get up for the JA window from about 0715z - 1110z.)
> >We tried some CW but signals were very very weak and FT8 proved the only
> possible way to complete contacts to JA.
> >It was pretty exciting to work these (6) JA friends:
> >JF8QNF
> >JA8EAT
> >JA7NI
> >JA1BK
> >JA8WKE
> >JA3FYC
> >We decoded no other JA signals on our side- but we know we were decoded
> by these other JA stations:
> >JH7PFD (two decodes)
> >JE6KYA (one decode)
> >JA1EOD (several decodes).
> >Epilogue:
> >We think that each JA qso that was made completed WAZ 40 on Topband for
> these JA friends. (meaning ZONE 2 was most likely their last one needed).
> >Steve VK6IR called us on ON4KST chat saying he had been chasing ZONE 2 on
> 80m for 5BWAZ for 45 years and asked if we could work him on 80m.  We did
> not know about 80m since the antenna had not been tested  for that band
> but, after checking it with my analyst, I found it resonated at about
> 3778kHz.  Steve said he could not do SSB there - so I asked him if he could
> do digital.  YES! was his reply and we managed a qso on FT8 a few minutes
> later.
> >After we uploaded our LOG FILE to LOTW (completed on 06 November) -
> within minutes there were 37 DXCC entities instantly confirmed via LOTW -
> including VK6IR and all (6) lucky JA friends we had worked.
> >So we are happy we helped some of our JA friends with WAZ 40 - and, at
> the same time, we are a bit  disappointed that we could not do more.  The
> A/K were lousy on nights one and two - things got better on night 3 when we
> worked the first 4 JA's - nights 5 and 6 produced one JA qso each - meaning
> JA8WKE and JA3FYC.
> >One amusing final fact - it was roughly a 2400km trip to there and back -
> so this works out to about 400km per JA qso.
> >KOWABUNGA!  but we had a great time trying this - and are pleased we had
> some limited success in doing so.
> >We wish to mention our special thanks to Don Toman (K2KQ) and to Frank
> Donovan (W3LPL) for their kind assistance with our antenna planning.  Their
> input and suggestions were invaluable in making this happen!
> >73/88 de  Miriam (VY2NA) and Jeff VY2ZM
> >Email:   k...@aol.com
> >_
> >Searchable Archives:  http://www.contesting.com/_topband - Topband
> Reflector
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives:

Re: Topband: A Bit of Zone 2 History Was Made Last Week

[Michael Walker]

Regardless of what the others say and who are thankless...

For those that committed time, vacation and certainly lots of personal CASH, I 
thank the entire team.

Your contributions to the hobby are certainly appreciated.  

Mike va3mw

> On Nov 9, 2019, at 9:44 AM, Mike Smith VE9AA  wrote:
> 
> WTG Jeff and Miriam !
> 
> 
> 
> I am always wanting to go to Zone 2 for some contest, but time, money and
> work/home commitments thus far have prevented it.
> 
> 
> 
> WRT to Steve's comments, I am *very* surprised that few VK's have worked
> Zone 2.
> 
> In recent memory VO2AAA/VO2AC have put on 2 pretty big 160m contest
> expeditions from the Point Amour Lighthouse in Labrador with exceptional
> antennas and huge signals into NA and EU.(and elsewhere)
> 
> 
> 
> I know that Yuri VE3DZ goes there into the QC side of Zone 2 nearly every
> year as VE2IM (sometimes twice a year)
> 
> usually for CQWW and other contests..but I *think*.(I stand to be
> corrected), he uses a relatively low Inverted L for TopBand,.he's always
> loud here but I am <1000kms away, so can't judge what he might sound like on
> the other side of the planet.
> 
> 
> 
> There are usually a smattering of other VE2/VE3 ops that go to VE2(Zone 2)
> contest operations from time to time and an occasional one from the
> Clubhouse in Lab city by Americans, VO1MP and others.  All in all it's not
> rare, but evidently nobody is concentrating on 160 (except VO2AAA/VO2AC) to
> work Asia/Pacific I guess.
> 
> 
> 
> I am pleased to know at least a few very distant DX stns were able to do it
> with my 'neighbours' over there on PEI...
> 
> 
> 
> I only operate CW/SSB and a sprinkling of RTTY, so won't make any comments
> about the FT-modes lest I get myself in trouble.hi hi ;-)
> 
> 
> 
> Mike VE9AA/VO2DX.etc.
> 
> 
> 
> In common with most topbanders any in this area, one of the two remaining
> zones 
> 
> I need on 160m after 24 years of operation from here is Zone 2, so I hope
> you 
> 
> and Jeff will go back one day. ;-)
> 
> 
> 
> I am guessing you went to/near the southern boundary of Zone 2 in Quebec - 
> 
> which is the best - possibly the only area - where it is possible to work
> into 
> 
> this part of the globe. Over the years I have listened for just about every 
> 
> DXpedition that operated on 160m from Zone 2 and I have only ever heard one
> - 
> 
> which was from this area. Despite the efforts of many from VO2, not a peep
> was 
> 
> heard from here.
> 
> 
> 
> I should add that I am a CW operator.
> 
> 
> 
> In the past there have been several longtime topbanders in the US who have 
> 
> appreciated how difficult it is to work some zones from this part of the
> world 
> 
> and made special efforts to work us on their DXpeditions.
> 
> 
> 
> I would particularly like to pay tribute to your husband Jeff, George W8UVZ,
> 
> 
> Bob K4UEE and Jerry WB9Z. However, this kind of knowledge and effort has
> become 
> 
> unusual - which is why I'd like to thank you particularly on our behalf.
> 
> 
> 
> Here's hoping someone will go to the Zone 2 part of Quebec for the upcoming
> CQ 
> 
> WW CW or the CQ 160 CW.
> 
> 
> 
> It'd also be nice if there was a DXpedition to Zone 12, in particular Easter
> 
> 
> Island or San Felix (CE0) who did a heap of 160m CW at times that suited the
> 
> 
> Asia/Indian Ocean/Pacific area - now that'd make a good holiday destination
> for 
> 
> some topbander. ;-)
> 
> 
> 
> Vy 73
> 
> 
> 
> Steve, VK6VZ (also G3ZZD and VY2LF)
> 
> 
> 
> Mike, Coreen & Corey
> 
> Keswick Ridge, NB
> 
> 
> 
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Desiccant in Beverage Boxes

[Michael Walker]

I have long given up trying to waterproof boxes from Rain.

I keep them rain proof and make sure there are multiple places for water to
run out.

I also do a lot with Alpine Ski racing and we have timing boxes, no
different than a Beverage box, scattered all over ski hills.  Same
practice.  Just make sure you have it somewhat ventilated.

If you open a box and it is full of water, you then have a problem.  :)

Mike va3mw


On Wed, Oct 30, 2019 at 10:57 AM Mike & Becca Krzystyniak 
wrote:

> Thanks everyone, all good inputs on experiences and options.
>
> For the record I'll be trying small weep holes first and maybe some
> internal
> conformal coating in an attempt to reduce residues...
>
> 73  Mike k9mk/5
>
>
> -Original Message-
> From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Mike &
> Becca Krzystyniak
> Sent: Tuesday, October 29, 2019 2:28 PM
> To: 'TopBand List'
> Subject: Topband: Desiccant in Beverage Boxes
>
>
> I went to put my beverages back up for this winter.  On a whim I opened
> each connection box and found a fair amount of a white powderish condensate
> inside the diecast housings. Mostly on the housing surfaces.  Wires and
> cores were clean.  Is it worth putting a desisscant bag inside to help
> minimize this or don't fix what isn't broken?
>
> Thanks...  Mike K9MK
>
>
>
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Hairpin match to inverted L?

[Michael Walker]

When I did my Inverted L with the elevated radials, I think the impedance
was about 38 ohms.

I decided to wind a 1.5:1 Unun based on Cecil's book on a K Mix.

That brought it nicely in line to about 55 ohms if I remember correctly.
That was about 2 years ago.

Balun Designs also has them for sale

https://www.balundesigns.com/model-16132-1-1-56-unun-32-to-50-ohms-2kw/

Mike va3mw


On Sun, Sep 1, 2019 at 7:54 PM Wes  wrote:

> That's exactly what I do; shorten the radiator to create a capacitive
> feedpoint
> Z and shunt that with inductance to make a resonant impedance step-up at
> the
> desired frequency.
>
> That said, my original loading wire was some stranded super flexible bare
> copper
> 12 AWG that I pickup up at a swap meet.  It's about 90 feet from my
> vertical to
> my tower so I ran the wire from the vertical to near the tower and had
> resonance
> at 1825 kHz, but with a feedpoint Z of about 25 +/-j with my radials.
> Over the
> band of 1800 to 1850, the Z almost perfectly overlaid the 2:1 circle on
> the
> Smith chart.   A few months later I noticed that the beautiful shiny
> copper was
> now severely tarnished.  Since I was laying down more radials with 14 AWG
> THHN I
> replaced the top-loading wire with a similar length of that.  Imagine my
> surprise when I found that the wire was now too short and I didn't have
> physical
> room for more.  I expected a push going from 12 to 14 but adding
> insulation at
> the same time.
>
> Using the old engineering adage that if you can't fix it, feature it, I
> decided
> to shorten the wire even more to add capacitance to the feedpoint Z and
> shunt
> that with an inductor to created an impedance step-up L-network.  Success,
> a
> perfect 50 j0 match at 1825 kHz.
>
> But, is it really an operational improvement?  Not necessarily.  Before
> matching, a hundred-twenty-five feet of LDF-50 coax rotated the feedpoint
> Z
> around the Smith chart, but it was still a 2:1 mismatch for the tuner in
> the
> shack to flatten. Not a problem.
>
> Now with matching, I have a "perfect" match at 1825 kHz, and if you don't
> have
> tuner you can stop here and claim success.  The problem is, this is a
> relatively
> narrow-band solution.  At approximately +/- 25 kHz, the feedpoint Zs land
> back
> on the 2:1 circle on the Smith Chart, except one point is near 25 ohm and
> the
> other near 100 ohm.  I'll leave it to the reader to decide whether this is
> an
> improvement.  I happen to think it is because: 1) I have enough space for
> the
> loading wire, and 2) the shunt inductor is a DC short across the
> feedpoint.
> Goodbye static build up.
>
> Wes  N7WS
>
>
> On 9/1/2019 11:46 AM, N4ZR wrote:
> > The other day a ham friend suggested using a coil ("hairpin") to match
> the low
> > impedance of a well-radialed inverted L to 50-ohm coax. This struck me
> as a
> > potentially-attractive alternative to a series vacuum capacitor, but I
> don't
> > know enough to evaluate it. Thoughts?
> >
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: inverted l

[Michael Walker]

Hi Doug

Ignore those splitting hairs.  :)

Yes, and inverted L will represent a load that should work for your radio
without any additional tuners (should).

I run an inverted L right up the side of an 80 ft pine tree and then I have
4 elevated radials.  2 of those radials parallel a fence that surrounds a
Tennis court.  Not much I can do about it.  The horizontal part goes over
to another tree.  Many say the fence will detune the antenna, but I don't
see it and it closely resembles the numbers when I plugged them into AO
(Antenna Optimizer).

To prevent the winds from tearing it apart, I have about 30ft of UV protect
shock cord on the rest of the horizontal part before the line heads down
the other support tree.  Since I added the 1/4" shock cord, I have not had
a fracture in the antenna.  In the past, when it did fracture, I had to
take the Quad Copter out and re-drop a new line.  :)

My antenna is NOT SWR flat across the entire band, which is good.  The
flatter the SWR you have the more ground losses and less radiated signal.
I forgot what  my 2:1 SWR bandwidth is, but it is about 1800khz to 1905 or
so.  It depends if the ground is frozen or not.

I've worked the world on this antenna.  Short story, I highly recommend you
build it and try it.  If it works, awesome.  If it doesn't try something
else.  It is just wire and you can re-use it.   If you get this shortly
after I right this, you can look at my PSK Report Link for FT8 and see what
parts of the world I was heard in tonight even with the solar storm.
https://pskreporter.info/pskmap.html?preset&callsign=va3mw&band=60-300&timerange=86400

I hope that helps, Mike va3mw

On Sun, Sep 1, 2019 at 9:20 PM K9FD  wrote:

> Matching network does not resonate the antenna
>
>
> > Guys
> > Will a invereted L a quarter wave length resonate at a given frequency
> without a matching network?
> > Doug wd8z
> > Sent from Mail for Windows 10
> >
> > _
> > Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Drone

[Michael Walker]

I have used Quad Copters for years.  In fact, there was a Picture of me
doing in QST about 8 years ago!

It is by far the most accurate way to make it happen!

Mike va3mw


On Sat, Aug 31, 2019 at 6:35 PM Rodman, David  wrote:

> https://dronefishing.com/
>
>
> I have used the bait release on this website to great success in order to
> drop lines right where I want them vertically.  You can do things with a
> drone bait release that you can't do with other methods, but it is not a
> substitute.  Also you can search YouTube for other drone fishing videos for
> other ideas on how to pull the line and release the "bait".  I usually use
> a bunch of wrenches tied together with a wire tie as my "bait".  I have
> also flown the drone around a roof pipe in order to pull a line around a
> vent for a wire support.  Lot of things you can do but be careful not to
> crash or lose the thing.
>
>
> Good luck.
>
>
> ---
> David J Rodman MD
> Assistant Clinical Professor
> Department of Ophthalmology
> SUNY/Buffalo
>
> Office 716-857-8654
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Inverted L in contact with leaves

[Michael Walker]

Hi Pete

You won't have an issue at all.

73, Mike va3mw

On Thu, Aug 29, 2019 at 12:24 PM Gary Smith  wrote:

> I sure don't have any kind of superstation
> but I have never been lucky enough to have
> a 160 antenna in the clear. All mine have
> always not only touched leaves, but are
> always resting on branches, many branches.
> I still get out pretty well, I wouldn't
> worry about a few leaves coming in
> contact.
>
> 73,
>
> Gary
> KA1J
>
>
> > My inverted L is taking shape - about 60 vertical, the rest
> > horizontal.  For a couple of months anyway, it is touching a number
> > of leaves in the vertical section.  I assume that's not a concern,
> > but thought I'd ask before I get a lot of radials down. First short
> > radial is down and MFJ-259 results look promising.  It's just a
> > problem of waiting for lawn mowing to stop hi.
> >
> > --
> >
> > 73, Pete N4ZR
> > Check out the Reverse Beacon Network
> > at , now
> > spotting RTTY activity worldwide.
> > For spots, please use your favorite
> > "retail" DX cluster.
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: FYI Robot contacts "outlawed" by ARRL

[Michael Walker]

Found it

Mike va3mw


  35. Ms, Jairam moved, seconded by Mr. Williams: WHEREAS, there has been a
growing concern over fully automated contacts being made and claimed for
DXCC credit, THEREFORE, BE IT RESOLVED, on the recommendation of the
Programs and Services Committee, the Board directs that DXCC rule 6 be
amended to add 6a, as the following: 6a. Each contact claimed for DXCC
credit must include contemporaneous direct initiation by the operator on
both sides of the contact. Initiation of a contact may be locally or by
remote.

On Wed, Aug 21, 2019 at 10:22 AM Michael Walker 
wrote:

> Dave
>
> A better definition of Robot is required..(this is not related to remote
> -- a remote is a long mic cord)
>
> Yes, there are versions of WSJTx that have been compiled that are 100%.
> You go to bed and you see who you worked in the morning.  Yes, this is
> wrong.
>
> But, is a WSJTx in its current state considered a robot as a Protein Unit
> (aka Human) starts the QSO and WSJTx finishes it as it goes through the
> sequence.
>
> Are the minutes of the meeting public and visible for all to review?  I
> searched, but was not able to find it.
>
> Mike va3mw
>
>
> On Wed, Aug 21, 2019 at 9:42 AM  wrote:
>
>> Does this “outlawing” apply to REMOTE RADIO also ? is that a “Robot” ? or
>> does it mean QSOs made without operator intervention or control ?
>> Operating
>> without operator control has always been “outlawed” by the FCC I believe ?
>>   jay ny2ny
>> _
>> Searchable Archives: http://www.contesting.com/_topband - Topband
>> Reflector
>>
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: FYI Robot contacts "outlawed" by ARRL

[Michael Walker]

Dave

A better definition of Robot is required..(this is not related to remote --
a remote is a long mic cord)

Yes, there are versions of WSJTx that have been compiled that are 100%.
You go to bed and you see who you worked in the morning.  Yes, this is
wrong.

But, is a WSJTx in its current state considered a robot as a Protein Unit
(aka Human) starts the QSO and WSJTx finishes it as it goes through the
sequence.

Are the minutes of the meeting public and visible for all to review?  I
searched, but was not able to find it.

Mike va3mw


On Wed, Aug 21, 2019 at 9:42 AM  wrote:

> Does this “outlawing” apply to REMOTE RADIO also ? is that a “Robot” ? or
> does it mean QSOs made without operator intervention or control ?
> Operating
> without operator control has always been “outlawed” by the FCC I believe ?
>   jay ny2ny
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Effect of trees on vertical elements?

[Michael Walker]

All

I have been running a 160M Inverted L right up beside some pine trees to
the 80ft level and then I have the horizontal part moving away.

The support for the vertical part is in the tree it runs up beside.

I also have 4 Elevated radials at about 6ft (approx 1/4 wave).

I'm pretty pleased with its performance and I have had it in place for
years.

Mike va3mw


On Tue, Aug 20, 2019 at 9:46 PM  wrote:

> I would never consider compromising a TX antenna just to hear better.
> Perhaps a T vertical with a feedline choke similar to your 80m dipole
> and feedline radiator footprint would help with any local noise. Also
> there are many small RX antenna options.  My station in Aruba was on a
> small city lot and I used a Pennant for RX which definitely received
> better than my shortened TX vertical.
>
> John KK9A
>
>
>
> John Harper AE5X wrote:
>
> Thanks for the info guys.
>
> If only I had room for a dedicated rx antenna - then I'd leave the
> top-loaded vertical as is. I was copied in New Zealand with it on 630m WSPR
> with 1 watt ERP.
>
> So a happy medium is what I'm after since an excellent tx antenna does me
> no good if I can't hear those calling me.
>
> John AE5X
> https://ae5x.blogspot.com
>
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: 160: Digital only DXCC needed - AKA, things that will kill the hobby..................

[Michael Walker]

OMG...

No one is mandating that you use FT8.  If you don't like it, don't use it.
End of Story.

What is the big deal?

This is sounding like your mother telling you to eat all your Grits before
you leave the table.

Mike va3mw




On Tue, Aug 6, 2019 at 4:12 PM dj...@t-online.de  wrote:

>
> Now its getting really silly
>
>
> -Original-Nachricht-
> Betreff: Re: Topband: 160: Digital only DXCC needed - AKA, things that
> will kill the hobby..
> Datum: 2019-08-06T21:24:47+0200
> Von: "Lee. KX4TT via Topband" 
> An: "topband@contesting.com" 
>
> OK - I think I've got a good start on the list..who
> knew
> Joe Taylor was the Antichrist??
>
>
> Things that will kill the hobby.in no particular order
>
> Spark
> CW
> AM
> SSB
> FM
> RTTY
> Packet
> Amtor
> Pactor
> Winlink
> PSK31
> PSK63
> MSFK8
> MSFK16
> M-RTTY
> EME
> Computers
> DXpeditions
> Contesters
> Holiday DXpeditions
> Nets
> OQRS
> PayPal
> Ebay
> Ragchewers
> Not enough computers
> Windows
> Linux
> Android
> MacOS
> Lowband Operators
> VHF operators
> Satellite Operators
> Microwave Operators
> Parks on the Air
> Islands on the Air
> Summits on the Air
> DXCC
> WAS
> VUCC
> WAZ
> ARRL
> CQ Magazine (didn't want them to feel left out by ARRL on the list)
> 73 Magazine (everyone is SK, so we shouldn't get any
> pushback)...
> Propagation is not good enough - I can't hear people I want to talk to.
> Propagation is too good - I can hear people I don't want to talk
> to
> K1MAN - OK, we could remove this as the odious little man (Glenn Baxter) is
> SK, but where's the fun in that??
> FCC
> Appliance Operators
> CB guys
> QRP
> QRO
> Using Paddles
> Using a straight Key
> Using A Bug
> Using A Bug as a Straight Key
> Using a Keyer
> QRM
> QRN
> DQRM - That one we should keep on the list
> Kenwood
> Yaesu
> Icom
> Elecraft
> Tower Rules
> JT65
> JT9
> FT8
> FT4
> K1JT
>
>
> Guys, it's probably not a complete list..but it's a
> start!!
>
>
> 73 de Lee KX4TT
>
>
>
>
>
>
>
>
>
>
>
>
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
> 
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: FT-8 performance

[Michael Walker]

You might want to listen to this TAPR presentation on Noise and Noise
calculations.

https://youtu.be/xXXj1Ko4ZXg

I found it pretty interesting.

Mike va3mw


On Thu, Aug 1, 2019 at 2:12 PM uy0zg  wrote:

> Is the main problem here in efficiency?
>
> The main thing here - the signal is not heard by a person!
> ---
> Nick, UY0ZG
> http://www.topband.in.ua
>
> Tim Shoppa 2019-08-01 20:40:
>
>
> > The "work signals way down in the noise you could never work otherwise"
> > myth, is just part of the myth that FT8 is an effective operating mode,
> > when really it's the least efficient mode for a good op to work Q's or
> > DXCC's. See my detailed 2018 statistics by mode here:
> > http://n3qe.org/n3qe2018.jpg
> >
> > Tim N3QE
> >
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: FT-8 performance

[Michael Walker]

Good morning

Do we know if the SNR is calculated over the RF passband filter width, or
is is calculated over AF filter bandwidth in the WSJTx engine, which it
knows?  There is a big difference.

Mike va3mw


On Thu, Aug 1, 2019 at 11:09 AM Marco Cogoni  wrote:

> Hi,
>
> I agree with Jerry. I spent a few weeks trying to use FT8 to obtain
> antenna radiation patterns and I discovered how the SNR is computed:
> it's totally flawed. Basically WSJTX computes the number in two steps:
> the first one estimates how strong the adjacent frequency bins are with
> respect to the bin of interest. Then this value is corrected by
> estimating the baseline noise in a 2.5kHz bandwidth.
>
> The bad is that in this way the program is trying to unify a QRM concept
> (how strong adjacent noise is) with band noise (due to QRN or whatever
> wide band there is).
>
> I found out the problem because using WSPR SNR estimations lead to
> antenna patterns that are very similar to NEC simulated antennas but FT8
> data produced WORSE patterns for the BEST antennas. This is due to the
> fact that best antennas receive far more signals so WSJTX gives a worse
> SNR.
>
> I tried to talk with Joe Taylor about this, but he said that this method
> is what he thinks it is best for a general use, if I have a better one,
> just go and modify the code yourself.
>
> I have a feeling that this way of computing the SNR was chosen because
> it makes you think, as Jerry pointed out, that FT8 can magically decode
> signals that are absolutely not hearable. That's highly dubious.
>
> What FT8 does achieve is an extreme overlapping of signals over 2.5kHz,
> but at the expense of not really being able to tell the SNR...
>
> If you want to dig deeper in the FT8 implementation have a look at AB1HL
> Robert Morris' FT8 Python implementation that is heavily commented and
> very very educational: https://github.com/rtmrtmrtmrtm/basicft8
>
> He also wrote a full code/decode high performance software (not so easy
> to understand...): https://github.com/rtmrtmrtmrtm/weakmon
>
> Hope it helps!
>
>
> 73,
>
> marco / IS0KYB
>
>
> On 01/08/19 15:17, K4SAV wrote:
> > I get the feeling that I must be the only person that has ever tested
> > FT-8 to the extreme to see what it can do. It seems that everyone else
> > just assumes it will do what the published information says.  It will
> > not.  Below is a summary of my testing.
> >
> > First I did a bunch of testing to see if I could figure out how the
> > software determined the S/N number.  I measured the strength of a
> > station calling CQ and subtracted that from the S meter reading for
> > the 2500 Hz USB band and that resulted in a number very close to what
> > FT8 reports.  I repeated the test multiple times.
> >
> > Official documentation says FT8 can decode signals 24 dB below the
> > noise floor.  That's an interesting comment because FT8 has no way of
> > determining the level of the noise floor.  Even during the off period
> > when no one is transmitting it can't determine the noise floor because
> > the noise floor is not represented in the audio signal.  The receiver
> > ACG brings the noise back up when no one is transmitting.  Actually
> > for FT8 the amount of audio is greater in the off period than it is
> > when stations are transmitting.  The only way to measure the noise
> > floor is by making the measurement in the RF world, which FT8 can't do.
> >
> > Actually what the program does is count everything in the 2500 Hz
> > bandwidth as noise. (That is comprised mainly of strong signals, not
> > noise.) It is limited to decoding signals 24 dB below that level.
> > From that info you can guess that if you narrow the bandwidth to
> > eliminate most of the strong signals FT8 will decode weaker signals.
> > Yes that works.  Verified it myself and others have also found this to
> > be true.  You guys that like to operate FT-8 should take note of that
> > comment.
> >
> > I thought maybe it could decode stuff below the noise floor if all the
> > signals were also below the noise floor, so I tested for that.  I
> > found out that the program poops out long before the noise floor is
> > reached.  With my tests where I decreased the gain of signals from the
> > NE (just after sunset in the NE) by pointing my antenna west and
> > increasing the gain such that the biggest signals were 15 dB above the
> > noise floor, FT8 just about quits. There were probably 50 or more
> > stations on the band and it was making one decode about every 5 or 10
> > minutes.
> >
> > FT8 has a deep search mode where it uses stored data to make guesses
> > at call signs some times.  I tested that too.  Before I started WSJTX
> > I set up a poor signal to noise ratio test. Started WSJTX in the
> > normal mode and it did very poorly.  Then I turned on deep search,
> > increased the S/N and let the program look at the band for a little
> > while.  Then I went back to the poor S/N condition without turning
> > FT-8 off and turned on deep

Re: Topband: Ticks

[Michael Walker]

For Ticks

Make sure you are well covered with normal cloths.   It is something to be
concerned about, but not stressed about.

When you get done, have someone inspect your entire body to see if any
Ticks are hanging on.  The initial bite isn't the bad part, it is the fact
they can hang on for 2-3 days getting their blood meal.  Do NOT crush the
Tick if you are bit.  Just easily remove it.

The Off! people also make a Tick repellent.

This is from our Provincial Health page.

Mike va3mw

How to avoid getting a tick bite

You might be at risk if you live, work in, or visit a wooded area, or an
area with tall grasses and bushes (including city gardens and parks).

You may also be at risk if you are involved in outdoor activities such as
hiking, camping and gardening.

You may be bitten by a tick and not even know it.

Here’s what you can do to avoid getting a tick bite.
Cover up

Wear:

   - light-coloured clothing, so it’s easier to see ticks
   - closed-toed shoes
   - long-sleeved shirts
   - long pants, tucked into your socks

Use insect repellent

Use an insect repellent, or bug spray, that says “DEET” or “icaridin” on
it. Put it on your clothes and exposed skin. Always read the label for
directions on how to use it.
Put clothes in the dryer

Kill any ticks that might be on your clothing by putting your clothes in a
dryer on high heat for at least 10 minutes before washing them.
Check yourself and your children

After being outdoors, check for ticks on yourself and your children. Look:

   - behind your knees
   - on your head
   - in your belly button
   - in your groin area
   - in your underarm area
   - on the back of your body – use a mirror, or ask someone to check for
   you

It’s a good idea to have a shower as soon as you can to wash off any ticks.
How to remove a tick

Removing a tick is the same for humans and animals. It’s important you do
not crush or damage the tick because it could cause Lyme bacteria to pass
from the tick into your bloodstream.

   1. Use fine-tipped tweezers and grasp the tick as close to your skin as
   possible.
  - Do not use a lit match or cigarette, nail polish or nail polish
  remover, petroleum jelly (e.g., Vaseline), liquid soap or kerosene to
  remove the tick.
   2. Pull the tick straight out, gently but firmly.
  - Do not jerk or twist the tweezers while pulling the tick out.
  - Do not squeeze the tick – you might crush it.



On Tue, Jul 16, 2019 at 11:07 AM AB2E Darrell  wrote:

> Hi Bruce,
> Just remembered that Guinea hens eat thousands of ticks a day  quite a
> delicacy for them evidently. Just Google it.
> 73 Darrell AB2E
> 
> From: Topband  on behalf of Sam Josuweit <
> sam...@epix.net>
> Sent: Tuesday, July 16, 2019 9:42:31 AM
> To: 'FZ Bruce'; topband@contesting.com
> Subject: Re: Topband: Ticks
>
> They are really hard to kill. Chickens will eat them as do Opossums.
>
> Sam (N3XZ)
>
>
> -Original Message-
> From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of FZ
> Bruce
> Sent: Tuesday, July 16, 2019 9:14 AM
> To: 'topband@contesting.com'
> Subject: Topband: Ticks
>
>
> Have a Beverage antenna that goes through a dense wooded area. Two
> species of Ticks are everywherelately.
> Anyone have information of a drone that could disperse tick poison
> 73Bruce - K1FZ
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Lack of NA Activity on CW

[Michael Walker]

You maybe correct Roger.

I was just telling you where they all went.  :)

I often hear .. no one on CW on 160M, but if you then look at the FT8
passband, it looks like 20M.

Now, with FT4 coming, we might have a 2nd group to look at.

Then, when a 160M CW contest shows up, the band is full of CW.  Go figure.

Mike va3mw

On Mon, Apr 22, 2019 at 4:28 PM Roger Kennedy 
wrote:

> Well as far as I'm concerned Mike, FT8 would just be my computer having a
> contact, not me personally . . . so it's not something I would ever be
> interested in.
>
> But if that's the case, it's even more daft . . . as there's LOTS of people
> who complain about the lack of DX activity on CW these days.  But if more
> people came on, there would be more CW activity !
>
> Roger G3YRO
> 
>
> >Hi Roger
>
> >Did you look up in the FT8 band?  That is where everyone is.
>
> >Mike va3mw
>
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Lack of NA Activity on CW

[Michael Walker]

Hi Roger

Did you look up in the FT8 band?  That is where everyone is.

Mike va3mw

On Mon, Apr 22, 2019 at 4:09 PM Roger Kennedy 
wrote:

> Apologies that I haven't been very active on Top Band the past couple of
> months . . .
>
> But I have a new YL, and so have been too busy with other things !
>
> However . . . I did come on for a couple of hours both on Saturday and
> Sunday nights . . . but despite the band being open for DX, only had a
> couple of QSOs !
>
> Where is everybody?!I know that some of you are farmers, so have taken
> down your antennas . . . but surely that's only a small percentage of NA
> DX-ers?
>
> It saddens me greatly that you hear hundreds of stations come on 160m for
> hours, calling a station on some DX-pedition . . . but the rest of the time
> there's no activity! (is that all the hobby has come to?)
>
> Roger G3YRO
>
>
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Rx splinter

[Michael Walker]

Some cable tv splitters will work below 2mhz. 

You’ll need to test it to be sure. 

Mike va3mw

Sent from my iPad

> On Feb 2, 2019, at 4:42 PM, George Dubovsky  wrote:
> 
> Shameless plug: if anyone needs a new Mini-Circuits ZSC-2-1-75 (different
> package, still BNC connectors), I have a bunch of them for $15 each plus
> shipping. Change one internal chip resistor, and it's a very good 50 Ohm
> splitter/combiner too.
> 
> 73,
> 
> geo - n4ua
> 
>> On Sat, Feb 2, 2019 at 4:35 PM Phil Duff  wrote:
>> 
>> Fred KE7X’s K3 book (pg 162) suggests the Mini-Circuits ZFSC-2-1-75 so I
>> picked up a couple used ones on eBay some years ago. These have some
>> isolation between output ports.
>> 
>> Have been to be working fine for me.
>> 
>> 73 Phil NA4M
>> 
>> 73
>>> On Feb 2, 2019, at 2:04 PM, Rudy Bakalov via Topband <
>> topband@contesting.com> wrote:
>>> 
>>> I use Mini-Circuits Z99SC-62
>>> 
>>> https://www.minicircuits.com/pdfs/Z99SC-62-S+.pdf
>>> 
>>> Rudy N2WQ
>>> 
>>> Sent using a tiny keyboard.  Please excuse brevity, typos, or
>> inappropriate autocorrect.
>>> _
>>> Searchable Archives: http://www.contesting.com/_topband - Topband
>> Reflector
>> 
>> -. .- ….- --
>> Phil Duff  na4m[at]suddenlink[dot]net
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> _
>> Searchable Archives: http://www.contesting.com/_topband - Topband
>> Reflector
>> 
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: FT-8

[Michael Walker]

So

I get up at 3 in the morning and go down to the CW part of the band to see
if I can hear any of you guys calling CQ.  NADA ... from what I can tell,
the band is dead.  Not one signal.

I go up to the FT8 section, and it looks like 20M.  It is packed with
signals.  This happens all the time.

For all of you wining about how you don't like FT8, how many of actually
called CQ in the last week?  Month?  Let's be honest now.  :)

I know many who have been working Japan from the east coast on FT8 over the
past few weeks as well.

"If you build it, they will come"

The point is, that no one makes you want to work a mode you don't want to.
However, I don't see many CW signals on 160 unless there is a 160 CW
contest.The waterfall is a solid blue (and I can hear pretty well).

my 2 cents from the Great White North.

Mike va3mw
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: launching lines over trees

[Michael Walker]

I have 80 ft trees that are used to hold up several antennas.

I have used 2 methods.

The most accurate is a Drone that I have used for years that was built from
a parts from Hobby King and the Wii controller.  I use a servo to pull a
pin that allows the payload to drop.  It can easily lift enough weight to
pull a 15 pound kevlar fishing line over the tree, but I have found that
you have to fly at least twice as high as the tree to allow gravity to do
its work.   From there, I pull back the poly binder twine and then I use
that to pull the final antenna line, usually some sort of UV protected
Kevlar.   You can't do this with a $40 kids drone as it won't lift enough
weight and it just scary to fly.  I had pictures of me doing it in
published in  QST many years ago (maybe 6-8 years ago).

My next go to is an Air Cannon that fires a payload of 2 AA batteries taped
together and the same 15 pound fishing line.  I find this to work well
enough, but it can go a little further than I want to go considering I am
dealing with a forest.  It takes about 50 psi to fire the payload over the
80ft trees without effort.  The batteries are in a 1/2" pvc pipe (I
think... I built it a long time ago).  In Canada, I got most of the parts
are a local hardware store, but Harbor Freight int he US should work just
fine.

My inverted L goes between 2 trees and I now have a small bullet block  at
the apex of the L with 10ft of UV protected shock cord holding the block.
At the end of the antenna, another 10ft of UV protected shock cord is used
to ensure that swaying trees in 40 knot winds do not destroy the antenna.
I find this works very very well.

My biggest problem with the 160M with elevated radials is that the
resonance point of the antenna can vary about 40khz depending on if the
ground is frozen or not.  When it is frozen, the resonance point slides up
the band.  Once thawed, it moves back down.  I find that I have to add
about 6ft to the antenna in the winter and then take it out in the summer.

Mike va3mw


>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: Three Port Rx antenna splitter

[Michael Walker]

When I get home tomorrow, I will sweep a few of cable splitters and see
what they look like.  I have used them or spitting receivers in HF and VHF
many times.

Mike va3mw

On Tue, Dec 25, 2018 at 9:23 AM Peter Bertini 
wrote:

> I'd avoid the TV splitters, quality is all over the place and the lower
> frequency limit varies. You would really want to measure the loss at 1.8
> MHz before committing to use one.
>
> I've been playing around with satellite TV splitters (most specifically
> DirecTV splitters (
> https://www.ebay.com/itm/Direct-TV-DTV-Splitter-4-Way/233066815876? )
>
> These are spec'ed from 2 GHz down to 2 MHz and if you shop around you can
> find them for a lot less than a new CATV splitter.  The satellite stuff has
> to work since it costs them bucks for service calls.
>
> One other advantage is that one port has DC pass through, if you need it.
>
> Pete  k1zjh
> _
> Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
>
_
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector

Re: Topband: lack of 160 activity

[Michael Walker]

For those with receiving issues (I'm not one of them)

However, a bunch of hams I know have been using these on low bands with
reasonable success.

http://dl1dbc.net/SAQ/miniwhip.html.  You can find them on eBay too for
about $32 shipped.

I have one, but I haven't had a chance to install it yet and test it out.

Mike va3mw


On Thu, Oct 18, 2018 at 10:13 AM Mark Lunday  wrote:

> Slightly different reason here...waiting for cleanup from remnants of
> Hurricane Michael...once I get the trees cut and brush removed, I can put
> the radial field back down and re-install the HiZ array.
>
> Although I will confess I spent last season in listen-only mode, copying
> QRSS signals on the low bands and monitoring 630 meters...I will be more
> active on TB this year.
>
> Mark Lunday, WD4ELG
> Greensboro, NC  FM06be
> wd4...@arrl.net
> http://wd4elg.blogspot.com
> SKCC #16439  FISTS #17972  QRP ARCI #16497
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: Why no NA 160m Activity?

[Michael Walker]

It isn't just 160M

I have seen this on 10M with no sunspots.  There are paths, just truly
degraded.

https://www.flexradio.com/ft8-tipping-point-for-ham-radio/

Mike va3mw


On Thu, Oct 18, 2018 at 9:45 AM  wrote:

> It’s all about FT-8 guys – get with the program or be very
> lonely...technology marches on.jay ny2ny
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: FT8 Usage or CW QRM

[Michael Walker]

The beauty of any mode, not just FT8, is that no makes you use it.

If you don't like it, that is fine.  Don't.

However, this is many a night, even recently, where there are a bunch of
guys on FT8 including good DX and only 1 guy on CW if that.

For all you complaining about not liking it, that is fine.  However, ask
yourself how often to you get on on a Tuesday night and just call CQ for a
few hours.  I know some of you do, but if I did a poll on this list, I bet
80% don't.  And, that is ok.

The hobby has many many options.  Don't knock those that like what they get
out of it.

Carry on... :)

Mike va3mw




On Thu, Nov 30, 2017 at 6:37 AM, Bill Cromwell  wrote:

> Hi Ed,
>
> On 160 meters (as well as other bands) there are the gentlemen's
> agreements that do depend on gentlemen. As long as the FT* folks are
> behaving in a civilized manner I say they should just get on the air and
> take their chances like everybody else.
>
> Personally I am completely unimpressed by FT*anything*.*! Callsign, QTH,
> signal report are *NOT* a QSO at my radio shack. I have also been known to
> handle some formal message traffic. The FT type modes won't accommodate me.
> My decision to shun those modes is based on known reasons that I cannot
> ignore. But those ops don't have to be shunned or denigrated. If they have
> a window I can avoid them. But when contests or DX pileups occur then all
> bets are off. That's when I usually turn the radio off and pickup musical
> instruments or take the dog for a walk or perhaps (not least) visit the XYL
> and help her with some of her interests. Contesters and FTers can duke it
> out without me. It's just a hobby that once in a great while turns a little
> more serious (emergency communications).
>
> 73,
>
> Bill  KU8H
>
>
> On 11/30/2017 06:05 AM, Ed Sawyer wrote:
>
>> The more I hear and learn about FT8, the more amazingly bad this mode
>> sounds.
>>
>>
>>
>> There is a simple way to solve the 1840 problem.  Just "update the app" to
>> default to 1980 and the whole 2.5khz crowd will move up there.  Amazingly,
>> most won't even know they moved, they will just wonder why their 160M
>> antenna "isn't working the way it used to".  But then hit the tuner button
>> and call it a day.
>>
>>
>>
>> This is essentially the same dialog the automotive industry is having on
>> autonomous vehicles.  When "normal life" interferes with efficient driving
>> algorithm, the answer is to eliminate normal life (ie - special lanes on
>> highways).  Sounds like FT8 just needs its own spectrum spice to be
>> sanctioned legally be the Region Bandplans.  And because IT is the one
>> needing the special treatment, it can adopt to whatever spot is decided
>> for
>> it.  For 160M - clearly 2000 - 1980 would provide the necessary 10
>> "channels" it requires for future growth.
>>
>>
>>
>> 73
>>
>>
>>
>> Ed N1UR
>>
>> _
>> Topband Reflector Archives - http://www.contesting.com/_topband
>>
>>
> --
> bark less - wag more
>
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: FT8 qrm

[Michael Walker]

Yes, you could and should.

It needs to be looked from everyone's point of view.

Of course, that deal falls apart for the 20m sstv guys.  They own the
frequency.

Mike


On Wed, Nov 29, 2017 at 9:20 AM, Bill Cromwell  wrote:

> Hi,
>
> Well...we could look at who was on first from the CW op's point of view
> just as easily. It just depends on who's ox is being gored. As for not
> listening longer than a few seconds after QRL that is just reasonable. Some
> of us (me for example) listen around for five or ten minutes *before*
> sending QRL. Filters open. Waterfall on (if we have them). Nobody in ham
> radio has been assigned a frequency that 'belongs to them'.
>
> That said, there are "gentlemen's agreements". Those only apply *if* there
> are gentlemen. The band offers 200 kc of spectrum - at least for U.S. hams.
> That seems like a great plenty. It's the "Gentlemen's Band" so lets get
> back to being gentlemen and accommodate all of the other gentlemen (and
> ladies too). Maybe we can infect some of the other bands with more civility
> while we are at it.
>
> 73,
>
> Bill  KU8H
>
>
> On 11/29/2017 07:59 AM, Michael Walker wrote:
>
>> Tim is correct.
>>
>> Also, when you do operate most digital modes today (FT8, RTTY, JT65, etc),
>> it is 50/50 if you even have the volume turned up as you are focusing on
>> the waterfall.  Heck, even when I do RTTY, I usually just watch the cross
>> hairs on the simulated scope since that is the way I grew with RTTY.
>>
>> The point is that hams own the spectrum and they get to do with it what
>> they choose within the limits of their license.  Worldwide.
>>
>> No one makes you use any mode you don't want to.  Spin the dial.  Move on.
>> Life is too short.
>>
>> Mike va3mw
>> _
>> Topband Reflector Archives - http://www.contesting.com/_topband
>>
>>
> --
> bark less - wag more
>
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: FT8 qrm

[Michael Walker]

Tim is correct.

Also, when you do operate most digital modes today (FT8, RTTY, JT65, etc),
it is 50/50 if you even have the volume turned up as you are focusing on
the waterfall.  Heck, even when I do RTTY, I usually just watch the cross
hairs on the simulated scope since that is the way I grew with RTTY.

The point is that hams own the spectrum and they get to do with it what
they choose within the limits of their license.  Worldwide.

No one makes you use any mode you don't want to.  Spin the dial.  Move on.
Life is too short.

Mike va3mw
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: No American activity

[Michael Walker]

There where a number of people on FT8.

Mike

On Tue, Oct 31, 2017 at 9:24 AM, MICHAEL ST ANGELO 
wrote:

> Roger,
>
> That is late evening/early morning in the North America. I'm fast asleep
> on weekdays since I have to get up for work.
>
> I try to operate during your sunrise on Friday and Saturday nights when I
> remind myself to take a nap during the day. Not as young as I used to be...
>
> Mike N2MS
>
>
> > On October 31, 2017 at 6:15 AM Roger Kennedy <
> ro...@wessexproductions.co.uk> wrote:
> >
> >
> >
> > There are usually several of us Europeans on at around our Sunrise (about
> > 0630Z) . . .
> >
> > But even though the band is open (as you can see on RBN), no stations
> about
> > to work !
> >
> > Roger G3YRO
> >
> >
> >
> > _
> > Topband Reflector Archives - http://www.contesting.com/_topband
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: future of ham radio

[Michael Walker]

The point is that we are all unique.

Everyone does their own thing and they enjoy it.

We can never change that and that is just part of being human.

The entire point is, they are doing something with ham radio.

Asking them to change is like asking you to START doing  a contest a
repeater.  It isn't for you.  If you make anyone do anything, they won't do
it.  Just like most governments turning every country into a Nanny state.

Get over it.  Just be happy they are on the air or where interested in the
first place.

73, Mike va3mw

On Sat, Oct 28, 2017 at 5:42 AM, Roger Kennedy <
ro...@wessexproductions.co.uk> wrote:

>
> I appreciate the point about trying to get youngsters interested in the
> hobby . . .
>
> However, the trouble with the computer-based Digital modes is that there is
> no SKILL involved in having a contact - it's your Computer having a
> contact!
>
> That lack of skill and therefore achievement is what gets people hooked
> into
> a hobby - if there's none they will quickly become bored.
>
> Look what happened with the countless new Amateurs (with new
> easy-to-get-licences) who just came on VHF and used Repeaters - they
> quickly
> got bored and most are now inactive, unless they were fortunate to have
> someone show them how satisfying making REAL contacts can be.
>
> The same can be said about Motor Racing . . . if the cars people used
> getting into the sport all had ABS, Traction Control, Automatic
> Transmission
> etc etc it would be pretty boring and they'd soon lose interest.
>
> 73 Roger G3YRO
>
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: Conditions Last Night

[Michael Walker]

I worked a few EU's on 80, but no joy on 160M

There was also only a few WSPR stations reporting a path.

Mike va3mw


On Sat, Oct 28, 2017 at 5:48 AM, Roger Kennedy <
ro...@wessexproductions.co.uk> wrote:

> Well, I spent a few hours on the CQ WW last night, trying to pick out DX
> amongst all the strong European stations . . .
>
> Didn't hear a single North American station !  (even though I'm sure all
> the
> big signals were on)
>
> Perhaps conditions will improve tonight.
>
> Roger G3YRO
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Topband: More on radials

[Michael Walker]

Here is my problem I am trying to solve.  This is why I was asking about
radials earlier.


   - I have a full length 1/4 - ish wire that runs over top a tall tree and
   the last 25 ft or so are horizontal
   - I can do elevated radials or lay radials on the ground
   - I'm not worried about SWR as I can dial that out later.
   - I have an 80m common feed point for a similar wire for 80M cw

The antenna does work, but I can tell by the SWR 2:1 bandwidth I have
significant ground losses now with 4 ground radials ~ 1/4 wave for each
band (80/160)

Thoughts and suggestions?

Mike va3mw
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: Shortened Radial Experiments

[Michael Walker]

In my case I have lots of space and I can lay down radials or do elevated.

My vertical part is about 85ft and the rest is horizontal.  It has served
me well enough, but I honestly thing it could do much better and that is
why I ask.

My problem is I don't know how on this list truly knows what they are
talking about and who doesn't.  Therefore, I tend to review published
papers that have had some sort of peer review.

I do believe that 1/4 wave radials have excessive ground losses, which is
what I have now and it shows a very nice almost flat across the band.  We
know that is not the sign of an efficient antenna.  Yes, it shows about 37
ohms at its best, but there is more work to be done.

Mike
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: Shortened Radial Experiments

[Michael Walker]

Thanks,

I need to digest this.

mike va3mw

On Thu, Oct 26, 2017 at 8:31 AM, k8...@alphacomm.net 
wrote:

> This issue does indeed keep coming up, so  I am posting my response (of 3
> years ago) again for K7EG, N7WS, VA3MVW, W0MU, and others. The shortened
> radials are still in use here, with 235 countries worked on 160.  The Vp
> shortening depends entirely on soil type, so math will only get you so
> close. Better to actually measure them in place, in your ground. Only two
> radials are necessary to do that.
>
> Brian  K8BHZ
>
> - Forwarded Message -
>
> From: k8...@hughes.net
> To: topband@contesting.com
> Sent: Friday, December 19, 2014 12:23:52 PM
> Subject: Topband: Fw: Shortened Radial Experiments
>
> From: Brian Mattson
> Sent: Saturday, October 14, 2006 7:56 PM
> To: topband@contesting.com
> Subject: Shortened Radial Experiments
>
> In response to Eddy's (VE3CUI) question about anyone using "shortened
> radials", I have been using these for two years now, with very good results.
>
> Coming to TopBand after decades on VHF, I was confused by the myriad of
> opinions on radials. Comments like "resonance disappears after a few buried
> radials" and "longer is better" were often seen. As a degreed electrical
> engineer, I was puzzled by the abandonment of the laws of physics once a
> radial was buried, or laid along the ground. Sure, the velocity factor &
> loss factors change significantly once a radial gets near, or below,
> ground, but basic electrical laws must still apply.
>
> As I first got on TopBand in the dead of winter, I used the single
> elevated radial as discussed in "Low Band DXing". Pointed towards Europe,
> and about 5 feet off the ground, it worked surprisingly well. However, when
> it came time to upgrade the ground system, confusion set in with all the
> conflicting opinions I read. Fortunately, I ran across Rudy Severns' (N6LF)
> article on "Verticals, Ground Systems and Some History" in QST (July 2000).
> ( As an electrical engineer in the switching power supply industry, I have
> learned to listen when Rudy speaks!). One comment that really caught my
> attention was on page 41: "For the 0.1 wavelength high (vertical) antenna,
> if we have a good ground screen out to a distance of 0.1 wavelength, we'll
> eliminate over 90% of the ground loss!". The lightbulb came on right then.
> I could instantly visualize an Electrostatics Fields class representation
> of a ground referenced hemispheric field intensity bubble with a radius of
> the vertical height. I use
>  a phased pair of inverted L's for my transmit antenna, and each has
> around 50 feet of vertical rise, so a system of enough 50 foot radials
> should suffice. But the nagging thought of resonant length still bothered
> me. Time to experiment (play).
>
> The inherent beauty of a quarter wavelength radial is in it's impedance
> transformation properties. Basically, the higher the impedance on one end,
> the lower the impedance on the other end. As the far end of the radial is
> open circuited, the antenna end is as low as possible, and it is
> non-reactive. Two opposing radial elements look suspiciously like a dipole,
> so that's where I began. All my measuring was done at 1.83 MHz, so a
> free-space dipole would be about 269 feet & have an impedance around 73
> ohms. All my experimenting was done with #14 solid insulated THHN copper
> wire.
>
> My first experiment was to construct a full size dipole and lay it on the
> ground. The resulting dipole was well below the lower operating frequency
> of the MFJ analyzer, so pruning was in order. I finally achieved resonance
> with a length of 182 feet! Rs was 130 ohms. So the velocity factor was
> thus: 182/269 = 0.677. So Eddy, don't take the 0.5 number from "Low Band
> DXing" as gospel, as it depends a lot on the type of soil you have. My soil
> is sandy (almost like beach sand). Note too that the ground proximity has
> increased Rs substantially. Next, I buried the dipole in a slit trench
> approximately 6" deep. Again, the dipole was way too long. To prune the
> buried dipole, I found it easiest to have the ends bent up so that they
> protrude just above ground & place a bright colored "wire nut" on the end
> (so I could find it again!). The resonant length of the dipole was now  107
> feet! Rs was 148 ohms. The buried velocity factor was: 107/269 = 0.398.
> Note that burying the dipole has add
>  ed even more losses to Rs.
>
> The result of experimenting thus far resulted in a resonant radial length
> (in my soil) of 53.5 feet (half of the dipole). With my 50 foot vertical
> inverted L's, I was ecstatic. But how many radials would I need?
>
> I constructed another buried dipole of 107 feet length, at right angles to
> the first, and so their centers were coincident. This gave me four radials.
> I tested the second dipole as a separate entity, and it's numbers were very
> close to the first. Next, I connected the two dipoles together (two
> adjacent wires as one node/ t

Re: Topband: K2AV Counterpoise

[Michael Walker]

And, apparently, that is like an old wound that will not heal.  

Radials need to be much shorter and I am trying to find the supporting math.  
At a 1/4 wave, there is too much ground loss. 

Mike

> On Oct 25, 2017, at 11:06 PM, W0MU Mike Fatchett  wrote:
> 
> I have read in a couple of articles that the radials need only be as long at 
> the vertical element as well.  I think W9UCW was one of the authors.  It is 
> all magic.
> 
> W0MU
> 
> 
>> On 10/25/2017 9:49 PM, Wes Stewart wrote:
>> I posted what I would, and am doing.  I subscribe to the idea that the 
>> radials should be about the length of the vertical as a minimum and using my 
>> friend, N7CL's rule of thumb, their number should be enough to keep the tips 
>> no further apart than 0.015 lambda.
>> 
>> On, or in, the ground radials are much longer electrically than they are 
>> physically because the Vp is much reduced.  How much so, who knows?  Put in 
>> enough and resonance doesn't really matter. See Devouldere.
>> 
>> Wes  N7WS
>> 
>> 
>>> On 10/25/2017 7:46 PM, Michael Walker wrote:
>>> Explain why more radials over the counter poise.
>>> 
>>> I'm hearing that 1/4 wave radials are actually too long and shorter raises 
>>> the feedpoint.
>>> 
>>> Mike va3mw
>>> 
>>> 
>>> 
>>>> On Oct 25, 2017, at 5:26 PM, Wes Stewart  wrote:
>>>> 
>>>> I would forget the counterpoise and add more ground radials.
>>>> 
>>>> See https://www.w8ji.com/counterpoise_systems.htm
>>>> 
>>>> Wes  N7WS
>>>> 
>>>> 
>>>>> On 10/25/2017 7:38 AM, James Denneny wrote:
>>>>> I am constructing the K2AV FCP Counterpoise  for my TB inverted L 
>>>>> antenna.  I live on a small lakeside lot.
>>>>> 
>>>>> Should I disconnect the few ground radials when I install the FCP or 
>>>>> leave them connected?  Would both together degrade performance?
>>>>> 
>>>>> Jim K7EG
>>>>> 
>>>>> Sent from Mail for Windows 10
>>>>> 
>>>>> _
>>>>> Topband Reflector Archives - http://www.contesting.com/_topband
>>>>> 
>>>> _
>>>> Topband Reflector Archives - http://www.contesting.com/_topband
>> 
>> 
>> _
>> Topband Reflector Archives - http://www.contesting.com/_topband
> 
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: FT8 - the end of 160m old school DXing? (long)

[Michael Walker]

Explain why on some nights there are many FT8 signals, and no CW signals.  No 
one calling CQ and everyone just listening.

If you build it they will come. 

Mike va3mw
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: K2AV Counterpoise

[Michael Walker]

Explain why more radials over the counter poise. 

I'm hearing that 1/4 wave radials are actually too long and shorter raises the 
feedpoint. 

Mike va3mw



> On Oct 25, 2017, at 5:26 PM, Wes Stewart  wrote:
> 
> I would forget the counterpoise and add more ground radials.
> 
> See https://www.w8ji.com/counterpoise_systems.htm
> 
> Wes  N7WS
> 
> 
>> On 10/25/2017 7:38 AM, James Denneny wrote:
>> I am constructing the K2AV FCP Counterpoise  for my TB inverted L antenna.  
>> I live on a small lakeside lot.
>> 
>> Should I disconnect the few ground radials when I install the FCP or leave 
>> them connected?  Would both together degrade performance?
>> 
>> Jim K7EG
>> 
>> Sent from Mail for Windows 10
>> 
>> _
>> Topband Reflector Archives - http://www.contesting.com/_topband
>> 
> 
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: Best 160 antenna

[Michael Walker]

I have 90 ft trees and I have a 1/4 wave draped over the top of them.

I have gone with elevated radials and in ground radials at different times.


I have a unun in place and a choke to provide a DC ground as well.   I'm
pretty pleased with the DX I've worked with it.

I have used both a Drone and an Air Canon to get the lines in place.  My
drone was the one that was in qst about 5 years ago

Mike va3mw


On Sun, Aug 27, 2017 at 7:46 PM, Arthur Delibert  wrote:

> I’ve found it useful to put a ferrite choke balun at each end – one at the
> antenna and one at the receiver.  Jim Brown, K9YC, has some helpful stuff
> on the internet about this.
>
> Sent from Mail for
> Windows 10
>
> From: Mike Waters
> Sent: Sunday, August 27, 2017 3:13 PM
> To: Mike Furrey
> Cc: gary mankoff; topband contesting.com>
> Subject: Re: Topband: Best 160 antenna
>
> The importance of a ferrite choke balun at the feedpoint cannot be
> overemphasized. A good design for 160m is 5 or 6 turns of coax wound
> through five stacked 2.4" 31-material ferrite toroids. Photos and details
> on my web pages referenced earlier.
>
> I had two elevated radials. It is a well-established fact that four 10' or
> 12' high 1/4 wave radials are as good as 120 on the ground.
>
> 73 Mike
> www.w0btu.com
>
> On Aug 27, 2017 12:53 PM, "Mike Furrey"  wrote:
>
> Hi Gary,
> For many years I used an inverted L between two tall pine trees and one
> elevated radial that was L shaped to fit on the 90' x 60' lot I had in
> Spring, TX. The radial was about 15' up and it was fed through a choke
> balun.
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: a box of ferrites

[Michael Walker]

Thanks All

Sean, I have at least 3 printed opies of W1HIS's pdf and I totally forgot
that was in the back.  It was that article that made me a choke everything
convert.

Hence the reason I have been buying some fleamarket chokes.

Brian, I tried a jig where I would wrap about 8 turns of wire around the
choke and then sweep it with the SpecA and see how many db of attenuation I
got.  I did get results, but I could not confirm if they were accurate.

thanks, mike

On Wed, May 31, 2017 at 10:16 PM, Sean Waite  wrote:

> W1HIS talks about how to identify ferrites in appendix 1 of this doc:
> http://www.yccc.org/Articles/W1HIS/CommonModeChokesW1HIS2006Apr06.pdf
>
> -Sean WA1TE
>
> On Wed, May 31, 2017 at 9:51 PM Michael Walker 
> wrote:
>
>> This group is clearly one of the most technical groups around and if this
>> off topic enough, please kill it.
>>
>> The question is that if you have a box of ferrites with no labels on them,
>> how could you measure their ability to be used as a choke.  Yes, you could
>> measure them and look them up assuming they came from one vendor.
>>
>> You have the usual ham tools plus a spectrum analyzer with a tracking
>> generator.
>>
>> Does anyone have a tried and true method for determining what their
>> choking
>> impedance might be?
>>
>> Mike va3mw
>> _
>> Topband Reflector Archives - http://www.contesting.com/_topband
>>
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Topband: a box of ferrites

[Michael Walker]

This group is clearly one of the most technical groups around and if this
off topic enough, please kill it.

The question is that if you have a box of ferrites with no labels on them,
how could you measure their ability to be used as a choke.  Yes, you could
measure them and look them up assuming they came from one vendor.

You have the usual ham tools plus a spectrum analyzer with a tracking
generator.

Does anyone have a tried and true method for determining what their choking
impedance might be?

Mike va3mw
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: [Amps] RF-KIT SS AMP

[Michael Walker]

I have one on order for my remote station.  The LPF is included.

Mike va3mw


On Wed, May 31, 2017 at 9:33 PM, Charlie Young  wrote:

> Tim, thanks for that info.
>
> On an unrelated topic, I am working on a big project here and needed some
> last minute supplies that are not available locally.  Ordered the needed
> material from DX Engineering and it was here today in WV, the next day
> after I placed the order.  Fantastic service that moved my project along on
> schedule (4 x 7 el 6M EME array).  Same for my low band rx supplies last
> fall.  Fantastic service.  Thanks to your staff.
>
> 73 Charlie N8RR
>
> Sent from Mail for
> Windows 10
>
> From: Tim Duffy
> Sent: Wednesday, May 31, 2017 9:16 PM
> To: w...@comcast.net; 'Jim W7RY' jimw...@gmail.com>; 'Jim Monahan';
> a...@contesting.com
> Subject: Re: [Amps] RF-KIT SS AMP
>
> I have talked to them SINCE Dayton.
>
> LPF IS INCLUDED - pay no attention to the web page.
>
> 73
> Tim K3LR
>
> -Original Message-
> From: Amps [mailto:amps-boun...@contesting.com] On Behalf Of
> w...@comcast.net
> Sent: Wednesday, May 31, 2017 9:12 PM
> To: Jim W7RY; Jim Monahan; a...@contesting.com
> Subject: Re: [Amps] RF-KIT SS AMP
>
> Hello Jim,
>
> Read the web page on it, it says no LPF as well as a few other items are
> missing.
>
> I built one from the Russian guys and I am happy with it, but you will be
> suppressed on how many things you will have to build and add to the mix.
>
> 73, Bruce, W8HW
> ===
>
> -Original Message-
> From: Jim W7RY
> Sent: Wednesday, May 31, 2017 21:04
> To: w...@comcast.net ; Jim Monahan ; a...@contesting.com
> Subject: Re: [Amps] RF-KIT SS AMP
>
> It most certainly does include a LPF! I also talked to them at Dayton. A
> built in tuner is an option.
>
> Seems to me the kit without the tuner was around $2600.00
>
> 73
> Jim W7RY
>
>
> -Original Message-
> From: w...@comcast.net
> Sent: Wednesday, May 31, 2017 8:48 AM
> To: Jim Monahan ; a...@contesting.com
> Subject: Re: [Amps] RF-KIT SS AMP
>
> It is also missing LPF (Low Pass Filter) and that is most important, You
> will need a minimum of 6 filters. Additionally you will need either a 6
> position wafer switch or will need to build communication path to you your
> exciter for filter selection. Perhaps other hardware.
>
> 73, Bruce, W8HW
> =
>
> -Original Message-
> From: Jim Monahan
> Sent: Wednesday, May 31, 2017 08:26
> To: a...@contesting.com
> Subject: [Amps] RF-KIT SS AMP
>
> With all of the discussion recently about SS amps, here
> is one that might be worth checking out:
>
> http://rf-kit.de/en/2k_Kit.php
>
> RF-KIT, a firm based in Germany, was exhibiting a legal-limit HF Amplifier
> Kit at the Hamvention. The unit on display was using two LDMOS power
> devices
> and sported a 7" color touchscreen for amplifier control and status. The
> kit
> includes everything necessary to build the amplifier except the Raspberry
> Pi
> 3 CPU, and three fans. The company's literature states that it can be built
> in less than a day.
>
> Jim, K1PX
>
> K1PX at msn.com
> ___
> Amps mailing list
> a...@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
> ___
> Amps mailing list
> a...@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
> ___
> Amps mailing list
> a...@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
> ___
> Amps mailing list
> a...@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: Aurora

[Michael Walker]

Same here from North of Toronto.  I'm just grabbing some pics.

It must be a contest weekend.

Mike va3mw


On Sat, May 27, 2017 at 11:16 PM, K1FZ-Bruce  wrote:

> Northern lights extending down into  Maine(reports on local 11PM local
> time news  also)
>
> 73
> Bruce-k1fz
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: Top Band and JT65

[Michael Walker]

JC

Amateur radio is about communicating, regardless of the mode.

Chokes don't solve an RF noise floor issue if the RF noise is generated by
devices you don't own or control.

For my station, and I have space for it, everything is choked, and I mean
everything.  I bought cases of chokes.  Yes, they helped all I could
control.

The other thing is that the bulk of the 160M dx on a given night might just
be on a digital mode.  There have been nights I could only hear 1 or 2 CW
signals, and they were in North America.  Yet, on JT65 there might be 10
new countries show up over the period of an hour or so.  It is actually
pretty impressive.

Regardless of the mode, they are still valid contacts.   No one said that
everyone had to do it.  It is about options, and there are many.

I am also suck at CW.  Yes, I have done it for 45 years or so.  I can do
it, but I don't enjoy it.I have have some CQ WPX CW contest paper to
prove it.  LOL

Amateur radio is many things to many people.  No one said you have to
comply or like or even do all or any.

I think that putting down phases of the hobby that others take enjoyment
from is really not productive.

many 73, Mike va3mw

On Sun, May 14, 2017 at 10:54 AM, JC  wrote:

> ..>>>
> I've worked 20 new countries on 160m this winter alone on bands that are
> closed are so polluted with RF noise, that it would not be possible with
> the human ear.
> <<<
>
> I kindly can't agree with that. Yes , noise is going up, but there are so
> many things you can do to reduce the noise floor, chokes, small RX antennas
> and filters.
>
> All of this requires some dedication and it is not easy. However far from
> "not possible"
>
> My city lot is noisy as everybody else, I works 135 (CW) countries for the
> CQ Marathon since Jan 1st 2017 on 160m. My total on the last 10 years is #
> 291 confirmed on 160m, 39 zones.
>
> My back yard is 100x150ft. not so small for a high performance station on
> 160m.
>
> The digital mode is a choice, only a choice to avoid the hard work to
> enjoy a DX on 160m.
>
> Digital mode  is boring as watch grass growing. But it is an option where
> the PC try to do a connection with other PC using the antenna you have,
> nothing wrong with that if you enjoy it.
>
> It is not a solution for noise. It is a computer calculation that narrow
> the BW to few Hertz or less than one Hz.
>
> The decoding is another thing. I personally don't consider a QSO, just a
> machine to machine connection.
>
> The human operator is an option, all communication could  and can be done
> by software as well.
>
>
>  Again it is just a personal thing.
>
>
> Regards
>
> JC
> N4IS
>
>
>
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: 1809.2 kHz constant dashes

[Michael Walker]

I don't have time to do this, but if someone plugs all the reports with
direction and guessing at strength on a Google Maps, the answer will start
to become readily apparent.

Mike va3mw

On Tue, Dec 6, 2016 at 2:10 PM, GALE STEWARD via Topband <
topband@contesting.com> wrote:

> Yes, and it sent a correct Morse letter/number every so often!
> 73, Stew K3ND
>
>   From: ersmar 
>  To: Don Kirk ; topband 
>  Sent: Tuesday, December 6, 2016 1:54 PM
>  Subject: Re: Topband: 1809.2 kHz constant dashes
>
> It's a Coke bottle on a Morse key and flapping window blind in San
> Francisco.  (For you youg'uns, check out On the Beach on Netflix.)
>
> 73 de
> Gene Smar AD3F
>
>  Original message 
> From: Don Kirk 
> Date: 12/06/2016  1:17 AM  (GMT-05:00)
> To: topband 
> Subject: Topband: 1809.2 kHz constant dashes
>
> I'm hearing what sounds like a stuck Key sending dashes (rate approximately
> 20 dashes sent in 10 seconds).  Does not appear to be a local signal and
> heading approximately 90 degrees from Fishers Indiana (which is
> near Indianapolis).
>
> Hard to get super accurate heading right now due to Thunder Storms in
> Southern US, but definitely close to 90 degrees from me.
>
> Anyone else hearing and please provide heading from your location.
>
> At 0600 UTC it is peaking about S7.
>
> Don (WD8DSB)
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
>
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: FW: Hi-Z Around Trees

[Michael Walker]

Same reply.  At our contest station, we have a 300M beverage just running
through the woods and tree branches in Northern Ontario

No scientific testing, but it just worked.

Mike va3mw


On Mon, Nov 14, 2016 at 7:49 AM, Paul Mclaren  wrote:

> On a similar note can I ask about beverages touching leaves and other
> vegetagian.   Will this result in poor performance and if so is it
> significant?
>
> Regards
>
> Paul MM0ZBH
>
> On 14 November 2016 at 12:41, Michael Walker  wrote:
>
>> For my 80CW and 160 verticals, I have wires suspended through 90 ft tall
>> evergreens.  I have been doing that for years and I put them in place
>> using
>> a drone (long before everyone was doing it).
>>
>> I have radials underneath.  In fact, they are on a common feedpoint.
>>
>> Based on my 160M or 80M WSPR / JT65 testing, I would be hard pressed to
>> say
>> that much if any RF is being absorbed by the trees.
>>
>> In my case, I work with what I have available.  For me, they just work.
>>
>> Mike va3mw
>>
>>
>> On Mon, Nov 14, 2016 at 12:54 AM, Lee STRAHAN  wrote:
>>
>> >
>> >
>> >   Greetings Top-Banders, I have been away for a couple days, sorry for
>> the
>> > late comments.
>> > The fact is, for me there is no definitive answer to the effect of
>> > trees on the Hi-Z arrays. I have made tests measuring phase shifts and
>> > amplitude changes with a variety of objects around these elements. My
>> > original thoughts after the tests were that any tree or large foliage
>> would
>> > have to a minimum of 5 feet distance from the elements. There are not
>> many
>> > trees where I live so this sort of test is very difficult. One of the
>> > things I did was to measure the capacitance of the elements as a source
>> > impedance to the amps. Changes in this capacitance would make amplitude
>> > changes at the amplifiers. The only real changes I measured after
>> numerous
>> > tests were when I would approach the element with the capacitance meter
>> in
>> > operation. When a 6 foot person approached the elements I could see
>> changes
>> > in the element at about 3 feet separation. Nothing at 5 feet. This was
>> with
>> > a 24 foot aluminum element and a low capacity mounting insulator. This
>> > capacitance test was more sensitive than my voltage and phase
>> measurements.
>> >Mike NI7T installed a 4 square system in the forest behind his cabin.
>> > Many pine and redwood trees were within 5 feet of the elements. We were
>> > never able to discern any negative affects to his array. Front to back
>> > rejection was well within nominal and front patterns seemed proper. The
>> > array remained sensitive to weak signals. Larry K1UO had his array in a
>> > brush patch. As I recall I suggested a 5 foot spacing which he did. If
>> you
>> > have not seen the DX Larry posts from Maine you are missing something.
>> In
>> > other words it was apparently adequate spacing.
>> >So with the 24 foot elements ¾ inch diameter that have around a 75pf
>> > source capacitance I would say you are pretty safe at 5 feet. Shorter
>> > elements with significantly less source capacitance would surely need
>> more
>> > spacing. A 12 foot similar element drops clear down to 42pf source
>> > capacitance. I would hazard a guess that arrays using short whip
>> elements
>> > at around 25pf would be quite sensitive to close trees or foliage.
>> > Barring all this I am confident you would be absolutely safe in my
>> > estimation at 10 feet distance of brush, tall foliage, and trees from
>> the
>> > elements.
>> >
>> > Lee  K7TJR
>> >
>> > >>Hello Jim
>> >
>> > My HI-Z 4 square has trees about 15 feet away from two of the elements
>> (I
>> > can make exact distance measurements if that would help you).
>> >
>> > I do not "think" the trees interact in my setup - but I am not 100%
>> sure.
>> > Even my HI-Z 8 circle has trees pretty close to 3 elements (10 feet).
>> > Without measuring changes (impedance) to these elements due to
>> location, I
>> > am not sure how else to know. However, given Frank's comments - I will
>> be
>> > trimming some trees today!
>> >
>> > I am certain K7TJR is the expert on this has he has heard from users
>> about
>> > element location and performance for years.
>> >
>> &

Re: Topband: FW: Hi-Z Around Trees

[Michael Walker]

For my 80CW and 160 verticals, I have wires suspended through 90 ft tall
evergreens.  I have been doing that for years and I put them in place using
a drone (long before everyone was doing it).

I have radials underneath.  In fact, they are on a common feedpoint.

Based on my 160M or 80M WSPR / JT65 testing, I would be hard pressed to say
that much if any RF is being absorbed by the trees.

In my case, I work with what I have available.  For me, they just work.

Mike va3mw


On Mon, Nov 14, 2016 at 12:54 AM, Lee STRAHAN  wrote:

>
>
>   Greetings Top-Banders, I have been away for a couple days, sorry for the
> late comments.
> The fact is, for me there is no definitive answer to the effect of
> trees on the Hi-Z arrays. I have made tests measuring phase shifts and
> amplitude changes with a variety of objects around these elements. My
> original thoughts after the tests were that any tree or large foliage would
> have to a minimum of 5 feet distance from the elements. There are not many
> trees where I live so this sort of test is very difficult. One of the
> things I did was to measure the capacitance of the elements as a source
> impedance to the amps. Changes in this capacitance would make amplitude
> changes at the amplifiers. The only real changes I measured after numerous
> tests were when I would approach the element with the capacitance meter in
> operation. When a 6 foot person approached the elements I could see changes
> in the element at about 3 feet separation. Nothing at 5 feet. This was with
> a 24 foot aluminum element and a low capacity mounting insulator. This
> capacitance test was more sensitive than my voltage and phase measurements.
>Mike NI7T installed a 4 square system in the forest behind his cabin.
> Many pine and redwood trees were within 5 feet of the elements. We were
> never able to discern any negative affects to his array. Front to back
> rejection was well within nominal and front patterns seemed proper. The
> array remained sensitive to weak signals. Larry K1UO had his array in a
> brush patch. As I recall I suggested a 5 foot spacing which he did. If you
> have not seen the DX Larry posts from Maine you are missing something. In
> other words it was apparently adequate spacing.
>So with the 24 foot elements ¾ inch diameter that have around a 75pf
> source capacitance I would say you are pretty safe at 5 feet. Shorter
> elements with significantly less source capacitance would surely need more
> spacing. A 12 foot similar element drops clear down to 42pf source
> capacitance. I would hazard a guess that arrays using short whip elements
> at around 25pf would be quite sensitive to close trees or foliage.
> Barring all this I am confident you would be absolutely safe in my
> estimation at 10 feet distance of brush, tall foliage, and trees from the
> elements.
>
> Lee  K7TJR
>
> >>Hello Jim
>
> My HI-Z 4 square has trees about 15 feet away from two of the elements (I
> can make exact distance measurements if that would help you).
>
> I do not "think" the trees interact in my setup - but I am not 100% sure.
> Even my HI-Z 8 circle has trees pretty close to 3 elements (10 feet).
> Without measuring changes (impedance) to these elements due to location, I
> am not sure how else to know. However, given Frank's comments - I will be
> trimming some trees today!
>
> I am certain K7TJR is the expert on this has he has heard from users about
> element location and performance for years.
>
> I wish you the best.
>
> 73
> Tim K3LR
>
> 
> From: donov...@starpower.net [mailto:
> donov...@starpower.net]
> Sent: Saturday, November 12, 2016 6:57 PM
> To: j...@audiosystemsgroup.com
> Cc: Lee K7TJR; k...@k3lr.com; Joel Harrison
> Subject: Re: Hi-Z Around Trees
>
> Hi Jim,
>
> My comments about short verticals not performing well near trees
> applies only to high impedance verticals.   Low impedance are
> little affected.
>
> 73
> Frank
> W3LPL
> 
>
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: New digital mode?

[Michael Walker]

It is WSPR.  Make sure you clock is sync.

It would be USB on 1836 + 1khz +/- their audio.  The cycle is just less
than 2 minutes.  That would move it up to 1838 at the top end.

Mike va3mw


On Mon, Oct 3, 2016 at 4:24 PM, Rik van Riel  wrote:

> On Mon, 2016-10-03 at 15:06 -0500, K4SAV wrote:
> > I asked this question on QRZ and never got a good answer.  I am sure
> > many on this reflector know the answer to this question.
> >
> > What is the stuff on 1838 kHz that sounds like a continuous carrier
> > with
> > no modulation. Looking at it on the band scope I can see some
> > modulation
> > (I think) but it is very small and it is not discernible by ear. The
> > signal has a regular transmission length (maybe 1 minute, I didn't
> > time
> > it). I know what PSK31 and JT65 sounds like but that is not what I
> > am
> > hearing.
>
> You are hearing JT9.
>
> The WSJTX software can decode both JT65 and JT9 at
> the same time, if you select JT9+JT65 as the mode.
>
> 73 de AB1KW
> --
> All rights reversed
>
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: Waterproofing a tupperware - drainage & advice

[Michael Walker]

We were worried about that.  It just never happened.

If it was a problem, I would have just added some screening to the bottom.

Mike va3mw


On Tue, Sep 27, 2016 at 2:16 PM, Jeff AC0C  wrote:

> How do you keep the bugs from building nests there?  Wasp is a particular
> problem locally.
>
> 73/jeff/ac0c
> www.ac0c.com
> alpha-charlie-zero-charlie
>
> -Original Message----- From: Michael Walker
> Sent: Tuesday, September 27, 2016 12:34 PM
> To: g...@ka1j.com
> Cc: topband
> Subject: Re: Topband: Waterproofing a tupperware - drainage & advice
>
> Hi Gary
>
> For years we have a Linksys router 50ft up a tower with a container stuck
> (Tupperware Cereal container)  over top of it and no bottom.  We kept it
> wide open.
>
> It has been like that for over 10 years and humming right along.  It has
> seen from plus +40C to -40C.
>
> Our key plan was to make sure it was kept dry and allow it to dry  out if
> it got wet.  Fresh water is normally not an issue.  Air flow is key.
>
> Stagnant water is a problem.
>
> Mike va3mw
>
>
> On Tue, Sep 27, 2016 at 11:25 AM, Gary Smith  wrote:
>
> Folks,
>>
>> Hopefully I replied to everyone who sent
>> me such great ideas about waterproofing
>> the Tupperware box. Many expressed
>> concerns about UV damage to the plastic
>> over time and many suggested drain holes
>> that were covered in different ways to
>> protect from insects getting in.
>>
>> I've got an old stainless steel sieve that
>> has a tear around the top. This is a
>> perfect time to cut that into a patch that
>> I will glue onto 1/2" holes in each corner
>> to allow for ventilation and keep the bugs
>> out. I've got some pieces of 3M pad that
>> I'm going to use to plug the holes where
>> the coax enters and leaves the box.
>> Between those holes at the bottom and the
>> air the can get past the 3M pad material,
>> condensation should not occur and bugs
>> should be kept at bay.
>>
>> It's a little different topic but the one
>> thing I can offer to the group on this has
>> to do with the PVC covers that I have over
>> the amplifiers at the base of each one of
>> the antennas. I want to keep mice out of
>> there because I know that they'll just
>> chew right into the wiring so a good hint
>> to keep mice out of anything you want to
>> protect is to use bounce sheets, the
>> fabric softener stuff. Mice hate the smell
>> of that and some friends with antique
>> vehicles put bounce strips under the seats
>> of their vehicles and feel safe that there
>> are no mouse nests to be found along the
>> way. So I stuffed a sheet up inside of
>> each one of those PVC containers. Don't
>> think it repels bugs though.
>>
>> Thank you all for the help I appreciate
>> it.
>>
>> 73,
>>
>> Gary
>> KA1J
>>
>>
>> > Rather than invent a poorly designed
>> > wheel, maybe someone here has already
>> > successfully worked out a better solution
>> > to waterproofing.
>> >
>> > I am using a Sterilite 25" x 18" x 8"
>> > container with secure snap on fasteners on
>> > each side of the lid to house the outdoor
>> > electronics for the 8 circle array. The
>> > lid fits wonderfully and there is a 1" rim
>> > that comes down from the lid to secure the
>> > contents from exposure to rain.
>> >
>> > I have drilled the holes for each coax (9
>> > in all) and cut a slot for the control
>> > wire. I'm planning on wrapping each coax &
>> > the control cable with plastic from a
>> > plastic bag to make the coax snug to the
>> > hole and then gorilla taping that to the
>> > side of the container on each side.
>> >
>> > Any ideas to improve this?
>> >
>> > Another option I've thought of to seal the
>> > openings is to use expansion foam to seal
>> > the holes. My concern is that is that I've
>> > never used this foam before and don't know
>> > how easy it is to remove it from the coax
>> > should I ever need to. Seems like it would
>> > make a great seal.
>> >
>> > Any caveats using the foam instead of the
>> > plastic bag & gorilla tape?
>> >
>> > Another consideration is drainage; the
>> > container will be placed on a large
>> > boulder to keep it above rising salt
>> > water, should there be any from a
>> > storm/hurricane.
>> >
>> > I don't want to make access holes for
>> > insects but I need to keep it dry inside.
>> > Once the holes are sealed there isn't much
>> > access for water getting in. Murphy being
>> > a McGuiver, should I drill a couple small
>> > holes in the bottom for drainage or should
>> > I leave it as is and not provide for
>> > drainage?
>> >
>> > 73,
>> >
>> > Gary
>> > KA1J
>>
>> _
>> Topband Reflector Archives - http://www.contesting.com/_topband
>>
>> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: Waterproofing a tupperware - drainage & advice

[Michael Walker]

Hi Gary

For years we have a Linksys router 50ft up a tower with a container stuck
(Tupperware Cereal container)  over top of it and no bottom.  We kept it
wide open.

It has been like that for over 10 years and humming right along.  It has
seen from plus +40C to -40C.

Our key plan was to make sure it was kept dry and allow it to dry  out if
it got wet.  Fresh water is normally not an issue.  Air flow is key.

Stagnant water is a problem.

Mike va3mw


On Tue, Sep 27, 2016 at 11:25 AM, Gary Smith  wrote:

> Folks,
>
> Hopefully I replied to everyone who sent
> me such great ideas about waterproofing
> the Tupperware box. Many expressed
> concerns about UV damage to the plastic
> over time and many suggested drain holes
> that were covered in different ways to
> protect from insects getting in.
>
> I've got an old stainless steel sieve that
> has a tear around the top. This is a
> perfect time to cut that into a patch that
> I will glue onto 1/2" holes in each corner
> to allow for ventilation and keep the bugs
> out. I've got some pieces of 3M pad that
> I'm going to use to plug the holes where
> the coax enters and leaves the box.
> Between those holes at the bottom and the
> air the can get past the 3M pad material,
> condensation should not occur and bugs
> should be kept at bay.
>
> It's a little different topic but the one
> thing I can offer to the group on this has
> to do with the PVC covers that I have over
> the amplifiers at the base of each one of
> the antennas. I want to keep mice out of
> there because I know that they'll just
> chew right into the wiring so a good hint
> to keep mice out of anything you want to
> protect is to use bounce sheets, the
> fabric softener stuff. Mice hate the smell
> of that and some friends with antique
> vehicles put bounce strips under the seats
> of their vehicles and feel safe that there
> are no mouse nests to be found along the
> way. So I stuffed a sheet up inside of
> each one of those PVC containers. Don't
> think it repels bugs though.
>
> Thank you all for the help I appreciate
> it.
>
> 73,
>
> Gary
> KA1J
>
>
> > Rather than invent a poorly designed
> > wheel, maybe someone here has already
> > successfully worked out a better solution
> > to waterproofing.
> >
> > I am using a Sterilite 25" x 18" x 8"
> > container with secure snap on fasteners on
> > each side of the lid to house the outdoor
> > electronics for the 8 circle array. The
> > lid fits wonderfully and there is a 1" rim
> > that comes down from the lid to secure the
> > contents from exposure to rain.
> >
> > I have drilled the holes for each coax (9
> > in all) and cut a slot for the control
> > wire. I'm planning on wrapping each coax &
> > the control cable with plastic from a
> > plastic bag to make the coax snug to the
> > hole and then gorilla taping that to the
> > side of the container on each side.
> >
> > Any ideas to improve this?
> >
> > Another option I've thought of to seal the
> > openings is to use expansion foam to seal
> > the holes. My concern is that is that I've
> > never used this foam before and don't know
> > how easy it is to remove it from the coax
> > should I ever need to. Seems like it would
> > make a great seal.
> >
> > Any caveats using the foam instead of the
> > plastic bag & gorilla tape?
> >
> > Another consideration is drainage; the
> > container will be placed on a large
> > boulder to keep it above rising salt
> > water, should there be any from a
> > storm/hurricane.
> >
> > I don't want to make access holes for
> > insects but I need to keep it dry inside.
> > Once the holes are sealed there isn't much
> > access for water getting in. Murphy being
> > a McGuiver, should I drill a couple small
> > holes in the bottom for drainage or should
> > I leave it as is and not provide for
> > drainage?
> >
> > 73,
> >
> > Gary
> > KA1J
>
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: Help needed with RTR-1A

[Michael Walker]

Mark

More details since I  am on a real keyboard now.

If the PTT connector on the RTR1 does NOT detect some voltage above 5-ish,
it will not allow you to switch over to the receive antenna.  This is a
safety feature to ensure you don't transmit into your receive antenna.

Grounding the PTT on the RTR1 will not make a difference or allow you to
switch in the RX antenna.

It is explained in the manual as well if you have it handy.

Mike va3mw


On Sun, Sep 11, 2016 at 12:28 AM, Mark Lunday  wrote:

> am trying to set this up for a separate receive antenna.  I had it working
> with my Flex 3000 before I sold that rig.  Now I am trying to use it with
> my
> TS-480SAT.
>
> I actually have TWO identical units.  Both are exhibiting the same
> behavior:
> without even connecting the RCA ground plug, I cannot get the units to
> switch between receive antenna and transmit antenna using the toggle on the
> front of the unit.  (I think that's how I accidentally ordered the second
> unit 6 years ago, I thought the first one had an issue after moving my
> shack, but somehow I hooked everything up and it worked fine).
>
> I can receive RF from the transmit antenna jack through the RTR-1A to the
> TS480.  This is the default behavior with power off.  With the power on, I
> see the same behavior for both units, and regardless of the toggle setting
> on the right hand side (RX ANT or MAIN ON).
>
> Mark Lunday, WD4ELG
>
> Greensboro, NC  FM06be
>
> wd4...@arrl.net
>
> http://wd4elg.blogspot.com
>
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: Sept 12 JT65 on 1838khz...nice opening to Eu.

[Michael Walker]

I have had many across the pond WSPR reports over the years.

I'll have to give JT65 a try as well.

Mike va3mw


On Sat, Sep 12, 2015 at 9:10 PM, Mike Waters  wrote:

> Thanks, Jim. Maybe I'll stick with WSPR, at least for awhile. Per the Sept.
> 10 thread about VK2KRR, there seems to be some 160m activity on that mode.
>
> I've enjoyed WSPR in the past, but the Linux version of the software I was
> using at the time would crash at odd intervals. Hopefully, downloading the
> latest version will solve that.
>
> I do have a good sound card. It's an older Creative Labs PCI card, but it's
> proven to be as good as they get for digging the weakest signals out of the
> noise.
>
> 73, Mike
> www.w0btu.com
>
> On Sat, Sep 12, 2015 at 12:51 PM, Jim Brown 
> wrote:
>
> > On Sat,9/12/2015 7:33 AM, Mike Waters wrote:
> >
> >> How much of this was JT9? Is it ALL JT65?
> >>
> >
> > It's all JT65.
> >
> > Notice all the CQs going unanswered. ... many stations using it are
> > running QRP into wet strings, and they can't hear.
> > ... The quality of the A/D converter also matters a lot. A good outboard
> > sound card will decode 10-12 dB further down into the noise than the
> sound
> > cards built into most computers.
> >
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Topband: Use of NCC1

[Michael Walker]

I picked up an NCC1 and I am trying to determine just how much I should
invest in the receiving antennas for my home (urban) QTH.

I am in a typical neighbourhood with a treed greenspace at the back of the
house and about 300M from the house beyond the green space is the 500KV
lines from one of Ontario's Nuclear power stations.

Do I just go with a smaller dipole out in the green space up in the trees
(or vertical).  Or, do I invest in either a pair of Z1501 active antennas
from Clifton Labs or the similar verticals from DX Engineering?

My HF antenna is a Windom at 50ft running through the trees.

If you have an NCC1, what has your experience been like?

Many 73

Mike va3mw
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: K1N On Line Log

[Michael Walker]

I agree that online logs are more of a problem than they are worth.  The
overhead on the DXpedition is just one more thing they need to worry about
and staff for.   This is a great example of how it increases the q rate for
them and allowing others not to make a contact.

If they must, then they shouldn't post the logs until they know they are
100% accurate as it does cause even more confusion.  I also know I made a
160 contact with them and my entry is not in the log (yet).  But, I am not
going to try to work them again as I am confident of my contact and it only
prevents others from making a contact.

This is ham radio and we need to ensure that it was a quality contact on
the air, not backing it up online.

my 2 cents

mike va3mw


On Fri, Feb 6, 2015 at 10:26 AM, W3AW via Topband 
wrote:

> Agree, thanks for not making multiple contacts.  Working K1N on 160 with
> my Index Labs Qrp Plus is a challenge.
>
> Kirk
> W3AW
> -- Original message--
> From: Tom Haavisto
> Date: Thu, Feb 5, 2015 10:24 PM
> To: Doug Renwick;
> Cc: TopBand List;
> Subject:Re: Topband: K1N On Line Log
>
> The way I look at it, I got them on 80/160, so anything else is a bonus.
>
> There is still lots of time, so it might be best to wait for a day or two
> before looking for insurance Q's while Clublog gets sorted out.
>
> For me, I would really, really hate to have an insurance Q end up costing
> someone else their one any only chance at putting K1N in the log.
>
> Tom - VE3CX
>
>
> On Thu, Feb 5, 2015 at 11:10 PM, Doug Renwick  wrote:
>
> > Tonight the K1N on line log came back on.  For me I lost a bunch of Qs
> that
> > were there before, and some Qs I had made previously still didn't show.
> So
> > I decided to work them again on 80 and 160 just to make sure.  I am not
> > sure
> > what the problem is but a lot of folks are unhappy.  In time it will be
> > sorted out but in the meantime it does not cast a good light on an
> > excellent
> > operation.
> >
> > Doug
> >
> > "There are some ideas so absurd that only an intellectual or lawyer could
> > believe them." - George Orwell, 1984
> >
> >
> >
> > ---
> > This email has been checked for viruses by Avast antivirus software.
> > http://www.avast.com
> >
> > _
> > Topband Reflector Archives - http://www.contesting.com/_topband
> >
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: Preamplifiers

[Michael Walker]

I was going to mention both Clifton Labs and the Active-Antenna.eu site.

Mike va3mw


On Mon, Feb 2, 2015 at 7:10 PM,  wrote:

> Hi Andy ,
>
> I use preamps from three different manufacturers in my station :
>
> - DX Engineering RPA-1 $143.95
> - Clifton Labs Z10043 (or Z10042) Norton Preamp $100.00 (with enclosure)
> - Advanced Receiver Research P1-30/20VD $69.95
>
> I use W3LPL bandpass filters in front of every preamp because
> of the extreme out-of-band signal levels in my multi-multi station.
>
> All three types of preamps perform very well, I've detected no
> practical difference in performance among the three types of preamps
> used on my Beverages and 8-circle receiving arrays.
>
> The Clifton Labs Norton preamp is clearly superior on 15 and 10
> meters because it appears to be unconditionally stable. The same is
> not true of the ARR preamps which self-oscillate on 15 and 10 meters
> when fed through a band pass filter. I've never observed the self-
> oscillation problem with ARR preamps on 160 through 20 meters.
>
> 73
> Frank
> W3LPL
>
>
>
> - Original Message -
>
> From: "Mike Waters" 
> To: "Andy YO3JR" 
> Cc: "topband" 
> Sent: Monday, February 2, 2015 9:17:32 PM
> Subject: Re: Topband: Preamplifiers
>
> This is what I use:
> www.w0btu.com/W0BTU-broadband-preamps.html
>
> 73, Mike
> www.w0btu.com
>
> On Mon, Feb 2, 2015 at 3:08 PM, Andy YO3JR  wrote:
>
> >
> > Can someone recommend me a good preamplifier for the beverage antennas on
> > 80/160m?
> >
> > I found on the market a few like Z10043 Norton Amplifier, KD9SV dual band
> > preamp, RPA-1 from DX Engineering.
> >
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: Remote Operation

[Michael Walker]

I agree with Robin

I own a remote that is a 2 hour drive away and I have had it in operation
for about 8 years.

Simply explained, it is a long mic cord and you have to sign
accordingly/legally based on where the transmitter is located.  Other than
the long Mic cord, there is no legal difference.

Mike va3mw



On Mon, Feb 2, 2015 at 2:46 PM, Jim N7US  wrote:

> I have all of my licenses, starting with a Novice in 1964.  The last one
> that specified a "Fixed Station Operation Location" was issued in 1984.
>
> 73, Jim N7US
>
> -Original Message-
>
> On Mon,2/2/2015 2:32 AM, Dragoslav Balaban wrote:
> > Callsign is assigned to HAM for Station, and Station have physical /
> > geographic Location , Latitude/Longitude..
>
> That is no longer true for US hams, since the 1970s. Our license is an
> operator license only, the address is a mailing address where we receive
> official communications from the FCC. :)  My callsign is simply K9YC
> anywhere within the US. I live in California.
>
> Before that time, we had a single piece of paper with two licenses -- one
> for operator privileges, the second for the station at a single location,
> and we had to sign /n at any other location.
>
> 73, Jim K9YC
>
>
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: That 1.9 MHz radar signal...

[Michael Walker]

Apparently it is back again.

Mike va3mw

On Wed, Dec 10, 2014 at 4:34 PM, Gary Smith  wrote:

> FWIW, I've left the P3 on 1.915 since
> 10:00Z/5AM EST and I haven't seen it so
> far today.
>
> 73,
>
> Gary
>
> > > Like CFH in NS, the miltary CFS at St. John's has a large RF presence
> on
> > > LF-HF...
> >
> >
> >  ...Joe, VO1NA has informed me that CFS is QRT so they can be ruled
> out...
> >
> > Steve / 73
> >
> >
> >
> >
> >
> > WEB - "The VE7SL Radio Notebook":  http://members.shaw.ca/ve7sl
> >
> > VE7SL BLOG - "Homebrewing and Operating Adventures From 2200m to
> Nanowaves":
> > http://ve7sl.blogspot.ca/
>
>
> ---
> This email is free from viruses and malware because avast! Antivirus
> protection is active.
> http://www.avast.com
>
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: That 1.9 MHz radar signal...

[Michael Walker]

I was just making sure everyone was reading!  :)

73

On Tue, Dec 9, 2014 at 8:19 PM, Mike & Coreen Smith VE9AA  wrote:

> VA3MW said:
>
>
>
> We may be able to exclude Nova Scotia, New Brunswick or PEI as it isn't
>
> being heard on groundwave by ve9aa who is the middle of Nova Scotia.
>
> Correct me if I am wrong please.
>
> 
>
> OUCH ! Every Canadian (Heck every W/VE) should know that VE9 = New
> Brunswick
> !!!
>
> (especially you Manitoba guys) 
>
>
>
> Seriously, I listened a couple times this evening and heard nothing.  Which
> proves nothing, except perhaps it's not on 100% of the time.
>
>
>
> Mike VE9AA, NB
>
>
>
>
>
>
>
> Mike, Coreen & Corey
>
> Keswick Ridge, NB
>
>
>
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: That 1.9 MHz radar signal...

[Michael Walker]

We may be able to exclude Nova Scotia, New Brunswick or PEI as it isn't
being heard on groundwave by ve9aa who is the middle of Nova Scotia.
Correct me if I am wrong please.

There is a military base in the middle of Labrador (literally the middle of
no where).

That may leave all of Labrador or Northern Newfoundland to have a listen.

Mike va3mw


On Tue, Dec 9, 2014 at 7:22 PM, John Kaufmann 
wrote:

> >  Stay tuned, and any additional reports are welcome...I think we have
> narrowed it down to something in the Maine/New Brunswick.Nova Scotia areas.
> >
> > 73,
> > Doug K1DG
>
> I would also put Newfoundland in the region of interest.  From my location
> in the greater Boston area, the direction of arrival is more east than
> northeast (around 75 deg as I said earlier).  I get the same heading every
> time I measure the signal and I'm confident in my ability to resolve
> directions with my RX array.  The F/B I see on this signal with my array
> suggests the signal is not particularly high angle.  The area around St.
> John's, Newfoundland area would be right in line with my estimated
> direction
> of arrival.
>
> 73, John W1FV
>
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: Unknown Pulse Signal Wiping out 1900-1925 kHz

[Michael Walker]

The fact that Mike VE9AA could not hear it on ground wave, means that is
likely more than a few hundred km's from his location.   The would possibly
eliminate New Brunswick, Nova Scotia, Newfoundland and PEI.

However, it would leave Labrador and then Greenland as part of the picture.


We now need someone to hear it during daylight hours when there is no
skywave.

Mike va3mw
_
Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: Unknown Pulse Signal Wiping out 1900-1925 kHz

[Michael Walker]

There is my recording here:

https://vimeo.com/113868670

Mike va3mw


On Mon, Dec 8, 2014 at 5:36 PM, Mike Waters  wrote:

> There seems to be some recordings at
> www.eham.net/ehamforum/smf/index.php/topic,100298.0.html
>
> 73, Mike
> www.w0btu.com
>
> On Mon, Dec 8, 2014 at 11:56 AM, K2RS  wrote:
>
> >  a friend who's in the ARRL Intruder Watch group forwarded me an e-mail
> > this morning informing him that IW has received reports about the noise
> and
> > they're looking for audio recordings. I'm not sure what IW actually does,
> > but at least they're aware of it.
> >
> _
> Topband Reflector Archives - http://www.contesting.com/_topband
>
_
Topband Reflector Archives - http://www.contesting.com/_topband

Topband: Radar like on 1913

[Michael Walker]

Hi Guys

Sorry to start a new thread on this, but I just joined and I can figure out
a way to append to the old thread.

For those that haven't seen/heard this yet, this is what it look like in
Toronto around Z.

https://vimeo.com/113868670.

Based on some comments in social media sites, is it possible that this is
coming from Iceland?

Mike va3mw
_
Topband Reflector Archives - http://www.contesting.com/_topband