Topband: Please unsubscribe

2018-01-13 Thread Jim Murray via Topband

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Re: Topband: Lowband Preamp

2017-11-21 Thread Jim Murray via Topband
The W7IUV  lowband preamp is easy to construct and has worked for me.  Quite a 
bit of info on the net.Jim/k2hn
E.P To:Topband ListNov 21 at 4:23 PMhello i am still 
looking for a pre amp for my BOG antenna 61 meter long is any one can recommend 
something that do work nice with the BOG thank you kind 73 elan g0uut
is any one can tell me if i lift the bog above ground what benefit i will get 
if so how high from the ground ?
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Topband: Topband FT8

2017-10-25 Thread Jim Murray via Topband
I agree and lets remember the ol'timers (old school?) made 160 what it is today 
from W1BB on up.  They  did it mostly without the aid of computers but with the 
use of electronic theory and formulas using a pencil.  The antennas and 
practices are still in use today.
73, JimK2HN
Gentlemen,

Why choose to let what others are doing upset us, especially when there is
not a thing we can do about it? Let's just enjoy our 160m DX and contests
instead. :-)

73, Mike
www.w0btu.com
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Re: Topband: Top Band and JT65

2017-05-15 Thread Jim Murray via Topband
    I hate to weigh in on this since it's been beaten to death already but just 
another opinion.  Over the years I've tried several digital modes starting with 
psk31.  There weren't many  signals on the band at that time but now I see 
there are many.  Not to long ago I ventured into JT65 and JT9.  Quite a 
learning curve for an Ol'timer.  I considered all the digital operation as 
something new to learn for a change and enjoyed the learning part.  Once I got 
everything running properly I would begin to loose interest.  To me, just not 
the challenge of dxing mostly cw and ssb.  Seems the biggest skill comes from 
the people who write the software like Joe Taylor or Peter Martinez.  From that 
point you just click the mouse or type on the keyboard.  Very impersonal at 
times using F key exchanges etc..  But, that's just ones opinion.  Whatever 
floats your boat.

Jimk2hn 
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Re: Topband: Out-door antenna tuning boxes

2017-05-12 Thread Jim Murray via Topband
If you google fly tying materials normally some of these outlets have a pretty 
good assortment of boxes.  Most or partitioned but some have foam which can be 
removed or removable partitions.
Jimk2hn
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Re: Topband: Best Headphones for CW

2016-06-18 Thread Jim Murray via Topband
Ditto on the Sony MDR-7506.  Have been using them for quite a while.   Not sure 
why they were my choice but generally I do quite a bit of research before 
buying.Regards,Jim/k2hn
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Re: Topband: Preampm for 160 meter receive loop

2016-04-03 Thread Jim Murray via Topband
I've made and used several W7IUV Preamps over the years and worked well.  There 
should be schematics on line still but I do have them if anyone is interested.  
Regards,
Jim/k2hn
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Topband: Windmill Farm

2016-03-30 Thread Jim Murray via Topband
Thanks Frank, glad to hear/see that:(   I guess that answers that 
question.Jimk2hn
"The Quartz Hill Contesters  -- once very well known as ZL6QH --were forced to 
shut down their spectacular contesting locationby the RFI from a wind farm 
installed in the same location astheir contest station."
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Topband: Wind Farming

2016-03-30 Thread Jim Murray via Topband
Hello all,There is talk of local farmers bringing in windmill companies.  With 
the low prices now on milk it is one way to boost income.  Wondering if anyone 
has experienced any interference/noise from the generators.ThanksJimk2hn
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Topband: Yaesu ft1000mp Mk5

2016-03-22 Thread Jim Murray via Topband
Just put a real nice one of these on QRZ if anyone is looking for 
one.Tnx,Jim,k2hn
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Topband: Capacitors and Coil

2016-03-02 Thread Jim Murray via Topband
Hi all,Not trying to push a sale but thought someone on topband could use the 
variables and roller inductor I just put on sale on QRZ.
73,jim/k2hn
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Re: Topband: Remote Antenna Tuner

2016-02-15 Thread Jim Murray via Topband
Gary,Check out Array Solutions - AT615, I believe it is.  Only other I found 
was MFJ.
Jimk2hn
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Re: Topband: Tuner

2016-02-15 Thread Jim Murray via Topband
Many thanks to all for your input on possible tuners.  I decided to get a Ten 
Tec 238 and give it a try.  A gentleman on Ebay was selling a complete TT 
station and was good enough to sell me the tuner alone at a reasonable price.  
It seems to be a long time favorite and with a little modification it should 
tune 160 fairly well.  Oddly enough, years ago I had one of these and remember 
putting a new dial cord on it.  Don't recall what happened to it.  I know I 
didn't pay $800+ as I see TT new parent company is getting for the latest 
version.  The prices these days for the high power tuners is unbelievable.  I 
paid $325. for the 238 which electronically is very similar probably to the new 
version.From correspondence with the seller I am confident the tuner is ok.  
Thanks again
Jimk2hn
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Topband: Antenna Tuners

2016-02-14 Thread Jim Murray via Topband
Hello all,Would you have any recommendations for antenna tuners?  Have been 
looking at the automatics, Palstar, Mfj, LDG At-1000Proii etc..  Have been 
using an old Dentron which doesn't have very close markings on the dials and 
getting tired of turning and adjusting.  Another option would be another manual 
such as the At2k with more precise settings. I do quite of bit of band hopping 
and even on 160 my Inv. L is perfect on 1.830 but doesn't like going very far 
either up or down, hence the need for a little tuner loss.  The automatics look 
pretty appealing but would appreciate any opinions from the group.Thanks
Jim/k2hn
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Topband: VK-64 Voice/CW Memory Keyer

2016-01-29 Thread Jim Murray via Topband
Before I put this on QRZ I thought I'd post this to the list in case someone 
here may be interested.  I'm selling my VK-64 w/mic cable (8pin), cw cable and 
all complete in original box.  Please respond to my email on qrz.RegardsJimk2hn
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Topband: Topband Forum

2016-01-16 Thread Jim Murray via Topband
Hi Tom,I have a coffee cup here that says "Don't let the turkeys get you down". 
 By the way my SB1000 is purring like a kitten on the low bands now and nice 
results on the rbn thanks to you.
Jimk2hn
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Topband: Topband Strange Propagation

2016-01-15 Thread Jim Murray via Topband
I don't want to start another "run" here but I was a bit disturbed last night 
after deciding to try for a new one, K5P.  Guys all over the DX transmitting 
freq and one who must have fallen asleep with his finger on the send button.  
He must have sent his call sign for over a minute.  I sent my call a couple of 
times but any possible return would have been covered by callers.  So much for 
that.  I don't get on as much lately with a shaky fist etc. and spend most time 
working on improvements but I can recall not to long ago that when a dx station 
was on 160 everyone would shut up when he picked a call.  One of the reasons I 
liked the "Gentleman's Band".  Seems to be a lot more people getting on 160 now 
I guess.
Jimk2hn
On Fri,1/15/2016 5:50 AM, Tom W8JI wrote:
> I hate to see Hams, who generally used to be higher than average 
> intelligence, 

Did you never listen to 75M as a kid? Have you listened recently? 30 
minutes in either error should correct that false impression. :)
 
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Topband: Strange propagation

2016-01-14 Thread Jim Murray via Topband
 " SO what is the beef?  RHR is just another form of progress due to advances 
in technology, if we did not embrace progress in ham radio technology we would 
all still be talking to one another on Lunch boxes and Gooney boxes! "

Problems begin when technology changes ethics.
Jimk2hn 

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Re: Topband: W1BB (not K1BB)

2016-01-06 Thread Jim Murray via Topband
To all those who may be new to the forum:  There are also several other 
exceptional pioneers of ham radio with amazing accomplishments that are willing 
to share their knowledge and experiences on this forum.  They provide a wealth  
of information to people like myself with less electronics and operating 
experience. They are all deserved of our thanks and respect for their help and 
accomplishments.
Jimk2hn
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Re: Topband: SPTBDC Scheduling

2015-12-31 Thread Jim Murray via Topband
"  I think that the timing of the December Stew is very poor.  Having it right 
near Christmas when many people are busy with family get togethers makes it 
difficult or impossible for some SP160 interested persons to participate."

I'm Surprised that this hasn't come up before but possibly I missed it.  I have 
this problem every year it seems with family visitors staying have not been 
able to participate other than turn on the radio once in a while to see how 
things are going.  This year while checking in one evening signals were all 
over the place stateside and EU, so missed a good one, at least from my 
qth.Happy New Years to All,
jim/k2hn
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Topband: (no subject)

2015-12-23 Thread Jim Murray via Topband
Huh? For QRP with a completely portable operation, I'd call that pretty 
good.

The late jazz saxophonist Gene Quill was sometimes criticized for being 
a poor imitation of the great Charlie Parker. At one point, he handed 
his horn to one of those critics, saying "Here -- YOU play Charlie 
Parker solos."

Ditto on that.  Gotta hand it to him.  A for effort!
Jimk2hn
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Topband: SB-1000

2015-12-21 Thread Jim Murray via Topband

Both are N750 types. You need a #6 lug, a short #6 screw (3/16th long), and 
some #16 bus wire plus a brass washer that Ameritron will have.  The chokes 
come from Ameritron no matter where you buy them.

Thanks Tom,Re. the lug, screw and wire, I'm assuming the capacitor I ordered 
from them will install with the lug, screw and wire that already exists?  
Didn't realize they had the washer also but will give them a call, possibly 
they can include it in the order.  I did get the choke from them also.  I also 
got one of F1BXL's parasitic suppressors he sells on Ebay.  Hopefully all this 
will calm things down a little.  The knowledge generously shared by folks like 
yourself, Jim and others on their web pages and this forum are greatly 
appreciated by all.  Have a good Christmas and New Years to all.
Jimk2hn
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Re: Topband: SB-1000

2015-12-21 Thread Jim Murray via Topband
Thanks to all for info on the capacitor.  The only place I had checked was rf 
parts but have not ordered yet.  Also wanted to come up with a #8 brass washer. 
 I'll go with a new original cap from Ameritron/mfj.  I saw the plate choke 
there but not the cap, will follow the link. I'll still be on 100W for a while. 
 I've been hearing pretty well on beverage/Inv.L but not being heard that well 
on the Inv.L.,   Thanks again.
Jimk2hn
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Re: Topband: SB-1000

2015-12-19 Thread Jim Murray via Topband
My mistake on the last post.  The contact with nothing on it is when the 
bandswitch is in the 160 AND 80M position.  jimk2hn
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Topband: SB-1000

2015-12-19 Thread Jim Murray via Topband
Ah, quick look at the schematic.  Nothing on that bandswitch lug.  Seeing some 
solder on it thought for sure something missing.  Black ungrounded wire- 
schematic shows it grounded although just doubled over.  I will go over it 
thoroughly before taking up any more space on the forum. Regards,jim/k2hn
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Topband: SB-1000

2015-12-17 Thread Jim Murray via Topband
Just came off 20M, amp working fine.  Went to 160 plate and load controls have 
no control, no output. Plate current climbs high with any added drive (45-50W) 
and blew both 10amp fuses.Off comes the cover.jimk2hn
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Topband: SB-1000

2015-12-17 Thread Jim Murray via Topband
If it is being driven with 50 watts or more and does not tune into a 50 ohm 
load, I'd carefully inspect the entire tank circuit and wiring of the tank. 
This includes the switch (as Herb suggested).

Thanks to all.  I will go over it again today.  I initially started out on 160 
and then moved on to other bands.  On 160 I could not get any increase in grid 
current, it came up but no increase with plate tuning but may  not have applied 
enough drive.  Staying below the 200ma grid and 400ma plate and just shooting 
for 500-600 watts on all bands right now.  I did go over the switch before 
using the amp and it looked good and also deoxit it. The only  thing I changed 
was 115v to 220.  Probably just operator error since it's been a  while doing 
any maxing and dipping:)Jimk2hn
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Topband: Heathkit SB-1000

2015-12-16 Thread Jim Murray via Topband
Anybody know how to make an SB-1000 tune properly on 160?  Ok on other bands 
but doesn't like 160, dummy load or well tuned Inv.L.   Is it a quirk of the 
amp needing a modification or possibly a bad component?  Saw nothing obvious 
before putting it to use but have not had the cover off since.Thanks,Jimk2hn
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Re: Topband: Shared Apex Loop Array

2015-11-10 Thread Jim Murray via Topband
CTU 2014 - Session 6 Part 1 - Low Band Receive Antenna Discussion Q - W3LPL

|   |
|   |  |   |   |   |   |   |
| CTU 2014 - Session 6 Part 1 - Low Band Receive Antenna... |
|  |
| View on www.youtube.com | Preview by Yahoo |
|  |
|   |

hi all
annyone ever did test this setup?How does it perform in reality?
may someone test it ore coud see the difference to HI-Z ore Beverage Antennas?
Anny Info vy welcome
Best wishes
Frank
DL8YHR.DE

Frank, Try this.  There are also more videos on the subjectRegards,Jim/k2hn
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Re: Topband: shared apex loop array

2015-11-10 Thread Jim Murray via Topband
Sri can't seem to get these links to work.  This is listed on Google then 
follow receiving antennas, etc.  Last try- hopefully it works.

W3LPL - Contest University
www.contestuniversity.com/.../W3LPL_Receiving_Antennas_2014.pptx   
   - 
   - 
Receiving Antennas - or - What happened to the. Beverages at K3LR and W3LPL? 
directive antennas for small lots; higher performance for larger lots; very 
high ...Regards,jim/k2hn
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Re: Topband: RFI - and lots of it - final status

2015-11-03 Thread Jim Murray via Topband
Electricians worked today on the house grounding the entrance panel and 
checking out all of the wiring.  Now, everything is grounded to the panel.  
They ran a line from the grounding directly to the ham room ground bus, checked 
all the outlets for any reverse etc.. They talked about putting a separate 
panel in the ham room but I opted out for now. The interesting part of this is 
that the strong hash noise I reported earlier is gone.  I have no idea why.  
When I reported the noise to the power company I did mention what I had found 
on the lines and It is possible the linemen stopped by when we were not here 
and did something, don't know at this time but have not heard back from the 
power company.The only other possibility is that one of the things the 
electricians messed with stopped the noise.  I suppose it could be something as 
simple as tightening the wiring in the box etc.. Cost was $380. but worth the 
peace of mind and possibly saved my operating.Regards,Jim/k2hn
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Topband: RFI - and lots of it

2015-10-28 Thread Jim Murray via Topband
I have and electrician coming next week who says he will check things out and 
first of all ground the breaker panel to two ground rods 7 feet apart.  I 
thought the grounding was  put at the meter but he says they don't do that 
anymore.  I think the old meter, before we had the new one put in had a ground 
rod beneath it but nothing now.  The only ground I could find to the panel is a 
skimpy wire going to a water line.  All of which looks corroded etc..  I know 
many dollars were spent on renovation and restoration of this place but I'm 
afraid to much emphasis was placed on cosmetic and not enough on electrical as 
I look more closely, pretty depressing.  Well, at least it will be safer.  
Can't thank the forum members enough.Regards,jim/k2hn
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Topband: RFI - and lots of it

2015-10-28 Thread Jim Murray via Topband
Thanks Steve.  I agree but didn't expect this problem.  Should have known this 
could be a problem since this is an older home that has been remodeled.  
Regardless of the outcome with the power company I've been studying Jims 
writings on grounding and bonding and finding things that don't look right such 
as no ground rod for the power panel and a few elements of bonding are missing. 
 Looks like I'll have to straighten a few things up inside also.Regards,jim/k2hn

Jim K9YC is absolutely right - I live in a similar situation to you and the 
problems have been markedly improved by getting the grounding and bonding to 
earth improved around the house - wish I had taken Jim's advice years ago. 
House earths are often very simple at best and whilst they may be good 
enough to save your life, they are often not good enough in terms of RF.

Have a look at Jim's book (there are some great diagrams) and get an 
professional electrician in to beef up/improve the house earth/improve the 
equipment bonding.

The likelihood is you win both ways - probably be safer and the RF noise 
will be lower.

Vy 73

Steve, VK6VZ
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Re: Topband: Re. RFI - lots of it

2015-10-27 Thread Jim Murray via Topband
Rain on the way so will know for sure what conditions are best.  Hopefully not 
the same as Tim or Kriss since this is big Lake effect snow country although 
you'd think snow would melt at an arcing area.  We are expecting 60mph winds 
tomorrow and rain.    Regardless, power company is sending someone "to take a 
look".  Noise is still down but not gone since the wet weather stopped.jim/k2hn
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Re: Topband: RFI - lots of it

2015-10-27 Thread Jim Murray via Topband
Thanks Tom.  I think I have it narrowed down with a portable.  The line going 
to our home is spliced to the main line along with another line going to a 
building across the highway. At that spot there is a ball of wires with some 
kind of what appears to be a metal fixture (clamp etc.).  Just not familiar 
with hardware used.  Noise drops at building across the highway around the 
meter etc. and down the main line in both directions.  Noise just below the 
junction is loudest I could find.  Thanks to all the good people on the forum 
I've accumulated a folder of RFI, grounding and bonding info that I'm sure 
contain the solution.  One lesson learned is to check 160 before you start 
laying in radials etc.  I didn't have an antenna that I could tune that low.  
At our old qth I left a nice radial system and moved here last fall and spent 
the summer working on another radial system.  What's ironic is that the power 
company put in a new feed line to the  house since they said the old one was 
corroding copper etc..  They did it for free as long as we would replace the 
meter and line to the main panel, which we did. The ironic  part is they left 
me the old wire and I used it for one of the radials:).  I think it weighed 20 
pounds, all copper.  Regards,jim/k2hn

Wet weather noise is often corona related, but sometimes defective 
insulators, cracked, scored, or dirty. I had problems with 345kV line corona 
in Ohio when the weather was damp.

Dry weather noise is often slack spans allowing the metal pin joints or ball 
and socket joints in insulators to arc from capacitive coupling. The metal 
on metal corrodes and makes a tiny layer of oxide that arcs from capacitive 
coupling and leakage.  Hitting a pole with a hammer finds that, because it 
shakes the wires and wiggles the metal joints.


There are so many different things that can cause noise, however, that any 
Internet diagnosis is mostly a wild guess.

The best thing to do before doing anything is try to track it with a VHF AM 
radio, like a portable aircraft radio. I have commercial noise locating 
equipment, but the last time I lent it out it came back broken.  :(

73 Tom 
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Topband: Re. RFI - lots of it

2015-10-26 Thread Jim Murray via Topband
Noise has decreased today.  We have had off and on showers up to about 24 hours 
ago and today clear and dry, barometer up.  Evidently wetness increases the 
noise.  I checked nearby poles etc. and nothing concentrated near the poles.  
Loudest I get is along and beneath a junction where lines from our home and 
lines coming from a building across the road meet.  Somewhat of a birds nest of 
wire right there.  I also found that the garage door opener (when not it use) 
also generates some noise but  not strong enough to reach very far.  Also, 
thanks Jim.  I read your article and I have a fairly good grounding and bonding 
situation.  The biggest difference is that I have a grounding bar (solid 
copper, thick strip not a grounding bar that is pounded into the ground)  
inside attached to the operating table that everything is attached to and bar 
is earth grounded.  Pretty much all the same setup I've used for years although 
I didn't have the rfi problem.  One problem I see that may come up is if the 
noise level is down at hf and the power company checks at vh or uhf, which ever 
they do I don't think they will pick it up (unless it rains).  Thanks again to 
all for the help.Regards,Jim/k2hn
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Re: Topband: RFI- lots of it

2015-10-25 Thread Jim Murray via Topband
Thanks Cecil,Yes during daylight hours also.
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Topband: RFI - Lots of it

2015-10-25 Thread Jim Murray via Topband
Greetings,Last Fall we moved into a new location.  This Summer I spent a lot of 
time and effort putting up an Inverted L and radial system.  Now after tuning, 
etc. completed I have what appears to be power line noise, source unknown at 
this time.  I threw the main in our home and noise still remained.  The closer 
I get to the power lines or the antenna system the louder it gets.  As I jump 
in freq., the higher the band the less noise.  I have a portable receiver that 
is capable of rx on the ham bands.  As it sits right now 160 is just about out 
of the question.  Rig is a ft1000mp mk5 field and the NB does do a good on the 
noise but also on the weak signals.  This is the first location in 35 years 
that I've run into this.  I don't have much faith at this point in the power 
company finding the source but will call them this week.  Any ideas would be 
greatly appreciated and also wondering about Noise Phasing with MFJ-1025.  I 
read w8ji article on it but not sure if it would help on noise of this 
magnitude.Regards,jim/k2hn
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Re: Topband: topband RFI and lots of it

2015-10-25 Thread Jim Murray via Topband
Thanks to all.  Yes, eliminated everything in the home and noise continues 
during the day.  Evidently I've been lucky over the years.  Prior to retirement 
we counted 5 different homes around the country since I was licensed and this 
is the first with rfi problems in the area.  One location was a busy area in 
No. Virginia.  The present home is in a small rural town in an agricultural 
area, not even a street light:).  Tomorrow I will walk the line and see if I 
can come up with anything.  That will raise some eyebrows with the locals:)tnx 
agn,Jim/k2hn
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Topband: CW Touch Key

2015-07-12 Thread Jim Murray via Topband
Since everyone seems to be on board I thought I'd ask a question about one part 
of Ham Radio we all love-keys.  Has anyone tried or been using one of these 
touch keys (no moving parts) etc..  I have various types of keys but the hands 
don't work like they did at one time, especially in the Winter.  Thinking of 
giving one of these touch keys a try.  ThanksJimk2hn
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Re: Topband: Fwd: ARRL Board meets next week

2015-07-11 Thread Jim Murray via Topband
 Here in the Virgin Islands I have built and functional SO2R 
station (NP2P) which provides for the operator (N2TTA) to operate from 
his apartment in NYC. Not sure I understand this correctly.  Like the majority 
 of amateurs I haven't gotten into remote operation at this point.  Does the op 
in NYC using the equipment in the Virgin Islands allowed to accumulate DXCC 
credits?  Can I remotely operate your station in the Virgin Islands for dxcc 
and contesting?Jimk2hn
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Topband: [SUSPECTED SPAM] Re: Aurora

2015-06-22 Thread Jim Murray via Topband
To much noise on 160 with storm but 6M A is hopping.Jim/k2hn
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Topband: G5RV Conversion Keith

2015-06-07 Thread Jim Murray via Topband
As it sits now I can tune on 160 but performance not as good as my Inv. L and 
beverage which I had prior to moving to this new QTH.  My other option is to 
put up another Inv. L. etc. and leave the G5 as is for other bands.  Just not 
enough low band   antennas and to little time while trying to get settled into 
a new QTH.  Just thought it would be interesting to see what that big wire 
would do strapped for 160.Thanks,Jim/k2hn
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Topband: Common Mode Chokes Etc.

2015-06-03 Thread Jim Murray via Topband
http://audiosystemsgroup.com/RFI-Ham.pdf

Nice writeup!
Jim/k2hn
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Topband: 160M Vertical

2013-10-08 Thread Jim Murray
Hello all,
Plan on working at getting back on 160 after a few years of being off the air.  
I last used an Inv.L and beverage.  A meager configuration but served me well.  
I've been looking for a decent substitute for the inv.L since the nice tall 
tree I used has been cut down.  Has anyone tried a Cushcraft MA-160V?  
Glad to see the Topband reflector is still going.  Probably the most 
knowledgeable group on the net.
Thanks,
jim/k2hn
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Topband Reflector