Hi Steve,
5300 pF is way large. It indicates *something *else is going on.
"Something" needs to be determined.
One thing for sure, after nearly a decade of correspondence with this as a
frequent subject, there is no one single "silver bullet" to fix this in all
cases. It is complicated and with s
Well, for a long time, a 160 test was not complete without VO1HP in the
log. But I certainly do understand the WX and related strains up there. My
brother lived in St Johns for a while. One of my nieces is a “Newfie”.
(She lives in Atlanta burbs now. )
Frank was a contributor in the early days ge
After a long medical issues delay, many upgrades to k2av.com are
completed and uploaded. In it we have addressed some number of issues
brought up in correspondence. Enjoy :>)
73, Guy K2AV
=
Revisions Listing for k2av.com
V.2023.09.20
[All Articles]
I always liked W4KFC on a bug. It was very recognizable, but it was not
excessive. Like watching someone walk who has added just a hint of dance
steps.
73, Guy K2AV
On Sun, Jun 25, 2023 at 8:42 AM Mike Waters wrote:
> On Sun, Jun 25, 2023, 5:42 AM Michael Rutkaus wrote:
>
> > ... most of the t
That was a really attenuated contest.
VE3MGY was weak all night. Except VE3MGY is *never *weak here unless the
sun hasn't gone down. Best proof of a weird, attenuated night. I only
worked 5 VE's, none of them loud, and normally work 20+, even in summer at
least in high teens. Not this year
Ne
Amazing 10 and 15 meters in ARRL DX. Also...
2340Z 22 Feb 2023. G3YRO heard at 1.827.0 and copied call 339. Called but
no joy. He might have heard me, but no two-way. No QRN, blizzard in most of
US.
We just assume that 160 is *dead* when 10 is wide open. 160 ain't dead, but
not sure what it is.
> 73,
> Charlie, N0TT
>
> On Tue, 20 Dec 2022 08:58:23 -0500 Guy Olinger K2AV
> writes:
> > Having walked around on the beach with a battery K2 listening to
> > incoming
> > signals on a short antenna, walking 50 feet from the water drops
> > signals
> >
Having walked around on the beach with a battery K2 listening to incoming
signals on a short antenna, walking 50 feet from the water drops signals
multiple S units. Over the beach there is an absorption zone starting at
the sand at water’s edge which goes higher and higher the farther from the
wate
Hi Andy,
One thing I noticed listening, was an apparent lack of gain or noise
equalization between the two antennas. Either that or the LOG is WAY
quieter than the beverage. Adding an amplifier to an RX antenna, preferably
out at the antenna IS a bit of a pain, and needs careful work with a signal
Just looking around the band tonight, and what I'm hearing is pretty
representative of what's been going on.
1) The general propagation is down about what one would historically expect
at this point in the sunspot cycle. We're gonna put up with that for
several years.
2) The propagation seems abo
at 11:48 PM Guy Olinger K2AV
wrote:
>
> Had a very gusty March 7 here in eastern North Carolina blowing the
> L/FCP all over. Did some 160m R,X,SWR scans to see the electrical
> result of that, recording them to graphical format. Was not expecting
> what I got.
>
> Would you ha
Had a very gusty March 7 here in eastern North Carolina blowing the
L/FCP all over. Did some 160m R,X,SWR scans to see the electrical
result of that, recording them to graphical format. Was not expecting
what I got.
Would you have guessed that there is a way for the wind to wobble an
antenna wire,
Version 2022.01.15 of k2av.com is up. Current release "Versions" content:
*V.2022.01.15*
- [Home Page] In "Very Useful Details" added item (n) referencing and
linking to added content in "Taming the Inverted L": Using a special jumper
to eliminate false readings sometimes experienced measuring at
Hi Roger,
If you go to
https://www.blitzortung.org/en/live_lightning_maps.php?map=30
and have a look at the lightning situation here, it will give you an idea
what the omni antennas for RBN nodes are putting up against. Also what
stations without directional listening antennas are putting up w
Just my .02 on this one.
The reader and especially the contest organizer not required to even
consider my opinion.
In a way it's like the ARRL's DX window in the ARRL160 used to be. It
was kept in there for years past its usefulness, especially since in all of
the later ARRL160's, the vast, vast
Confirm that,
It's N6WIN/7.
73, Guy
On Thu, Dec 23, 2021 at 12:58 PM HP via Topband
wrote:
> Look at N6WIN on his QRZ page --
>
> Hank K7HP
>
> - On Dec 23, 2021, at 12:12 AM, Ed W0YK wrote:
>
> | N6WIN/7?73,Ed W0YK
> | Original message From: ok...@atlas.cz Date: 12/22/2
In the pulley snag conundrum, I found that the small marine grade stainless
steel, ball bearing pulleys would handle the black sheathed 3/16 in
parachute cord style rope and never a snag. They also pull very easy as the
bearing never freezes up from exposure to merely (vs. salt) water.
I also have
Thanks, Tree.
Note that in the *summer* Stew this year, as of this post the high
scorer is K1LT who was running LOW power.
Ya just never know.
73, Guy K2AV
On Sun, Jul 11, 2021 at 1:27 PM Tree wrote:
> Sorry for the delay in posting scores.
>
> The results for the Summer Stew are now avai
I haven’t run a model on a hytower recently but helped one soul out of a
quandary with one a while back. Items that required attention:
1) Coax connection SO239 at base and its mounting device metal, etc, had to
be entirely replaced due to metallic corrosion.
2) Radials were awful. Needed seriou
Was recently talking on 160 to one of my G3 acquaintances at his dawn.
He was apparently hearing me quite nicely. I gave him an honest,
accurate RST 289. Maybe closer to 189.
In between rapidly recurring S9/20 QRN crashes he was an honest S8 on
the K3, 3 or 4 S units above daytime noise levels. Ne
Hi, Roger
It sure seems like a lot of confusion arises when folks attempt concise
electrical and mathematical thoughts and calculations using words with very
broad and fuzzy definitions. Words like radial, vertical, topload, etc.
can mean different things and can create remarkably confusing sente
A counterpoise is what we do when the full size of a double-ended antenna,
dipole, OCF, etc is too large for us to build, maintain, etc. Very simply,
we want to jam the energy from the shield of our coax into the
counterpoise, and the energy from the center conductor into the radiating
element, the
I would have to know just exactly how your "Ground R" was constructed to
comment. The two EZNEC variables for ground description are dielectric
constant and conductance. Also there is a lot depending on the T dimensions
and L dimensions in any comparison that would preclude any simple answer
that d
e and
let others.
I will also post to this reflector a piece that shows the increasing
warning over time of consequences for not following the help files'
"closely spaced wires" dictum. Being the semi-hoarder I am, I have
everything from V2 onward. I doubt many have that laying arou
Hi Rick,
There is no problem modeling an FCP. You do have to do the parallel wires a
certain way that’s documented in EZNEC since 1997 (version 2).
What do you perceive to be the issue?
73, Guy K2AV
On Fri, Jan 8, 2021 at 11:10 AM Richard (Rick) Karlquist <
rich...@karlquist.com> wrote:
> It w
Hi Jamie,
That will be the contest sponsor's call, whose decision is final. Nor is
the sponsor required to explain decisions of this nature. Any explanation
would be the sponsor's choice. Nor do the published TBDC rules require that
an entrant must not have been DQ'd in any other contest for some
I don’t at all doubt Roger’s reports. The grind comes when others
attempting Roger's successful methods report terrible results. There is
clearly something going on not at all well understood.
There are some number of reasons why it is nearly impossible to draw
universally reproducible conclusions
Over really good dirt there isn’t too much difference.
The other problem is that the NEC ground approximation coding usually
underestimates loss. This is because the ground approximation in the model
uses a monolithic ground. Same stuff 100 feet down as at the surface. Real
dirt never is. Water ta
Hi Nick,
I have a limited setup, only an inverted L over an FCP on 160 (not like
W3LPL's 160m 4 square cannon). With basically no time to operate, I managed
about 60 minutes in three spells on 160m, 45 QSO's, 17 zones, 30 countries,
all S&P.
I worked EU and AF in zones: 14: 4, 15: 7, 16: 1, 20:1
As a lifetime true-blue dyed-in-the-wool statistical wonk, this solar cycle
presentation is the statistical equivalent of Jascha Heifitz playing the
violin.
We always have to wait and see how things play out, for sure. But... And a
very delightful "but..." at that...
But... For the first time in
I heard the 7Q7 call sign here in NC exactly once, of course at the tippy
top of a long QSB cycle, which then immediately dove into the noise not to
be heard again in the 30 minutes
before I had to go downstairs.
8’s and 9’s appeared to be hearing him. Go figure.
73, Guy K2AV
On Thu, Nov 19, 202
I’m glad that rule is gone from the ARRL 160. THEORETICALLY that should
have worked. What I observed year over year was that the ** DX ** didn’t
use it that much. Not altogether sure why.
I suspect that S&P stations didn’t start their scanning in the DX window
because most of their contacts were g
Is this thread’s subject material really just whining?
Well, FT8 does some really good things that typical CW operation doesn’t
usually want to bother with.
1) use of a calling frequency (“SSB” “carrier” frequency)
2) constant monitoring
3) highly efficient use of VERY close frequencies. Never n
Just to point out that there is NO one-size-fits-all PHYSICAL length for
BOG best f/b.
There is an ELECTRICAL length that far better defines it. And the
electrical length of a fixed length of wire varies wildly all over the
place, depending on the ground underneath, and the spacing to actual dirt
I agree about the padding caps, good addition. I know of instances of both,
fixed caps with insufficient current rating, and the balun insufficient for
160m blocking.
If the caps were starting cold, there would be some period where the SWR
was normal and then start climbing.
The 160m stressed bal
; variables in an Omega match.
> >
> > 73,
> >
> > John, W4NU
> >
> >
> >
> >
> >
> >
> > Sent from my iPhone
> >
> >> On Aug 27, 2020, at 1:38 PM, Guy Olinger K2AV
> wrote:
> >>
> >> Hi Dale,
> &g
Hi Dale,
The RF voltage is always looking at the far end (stuff on the end away from
the tower base) to jump onto.
*** Provide a deliberate, designed, long-term weather survivable metallic
path to the boom of the highest yagi and provide a low R&X path from the
boom to BOTH sides of at least one
With the era of cheap VNA's it does seem time to move forward. Especially
with wire yagi's, you can get VNA's with smartphone style 5V USB charged
batteries that talk to a tablet running supplied software, communicating
with bluetooth. You can put the VNA right at the feed, and pull it up in
the ai
Hi Mikek,
The trick is to remember that just one common mode block rarely does the
trick. Usually if it's bad the first one will make a difference. The second
maybe not at all. What happens with the second depends entirely on where it
is with respect to the first block.
The trick is to understand
Thanks for the URL
73, Guy K2AV
On Mon, May 4, 2020 at 10:08 AM Edward Seeliger
wrote:
> For a perspective on Herb - KV4FZ - from the eyes of those who knew him in
> the USVI, see this link:
>
> https://stthomassource.com/content/2020/05/03/activist-communicator-herb-schoenbohm-dies-at-84/
> Ed
Hi, Mikek,
BOGs have a very miscellaneous performance, some love 'em, some hate 'em,
nobody telling a lie. One part of a back yard can have a heated BOG
argument with a different part of the same back yard, both sides verified
with MEASUREMENTS. The secret has to do with the BOG in DOG disguise, o
In the past two ARRL 160 and two CQ 160 CW contests, I worked the following
with ND in their exchange. I checked, they all have QRZ.com addresses in ND
as of today. I worked K0IDX in two contests, the others just in one:
N7IV
N0UD
K0YL
K0IDX
I'd get their email addresses and go beg. Quick, befor
Rudy is not the only one taking measurements.
I've been doing EZNEC since 1996 (v2) and NEC4/EZNEC Pro since 2002. The
latter cost me well over a thousand bucks, but has been well worth it in
the long run and then some. NEC4 does on the ground and under the ground in
a reliable way, but still does
Depending on the exact circuit and device, to measure noise from the device
itself, don’t you have to terminate the inputs to put the normal impedance
on them? The circuits are often designed with the coax Z zero in mind.
73, Guy K2AV
On Mon, Mar 16, 2020 at 12:47 PM Steve London wrote:
> This
Have to disagree on the no-use-for the horizontal leg.
It fills in the doughnut hole in the high angle radiation, which in
contests is very good for keeping others from planting on your run
frequency. Also there are high angle path opportunities that are gradually
becoming more recognized. PLUS, t
That’s an awful lot of effort just to keep a T top. There are a number of
effective alternatives to the traditional T top without the interaction
drawbacks. Inverted L is only the dirt simple one without the
skip-zone-making high angle hole in the pattern.
73, Guy K2AV
On Fri, Feb 28, 2020 at 9:4
Hi Roger,
Just want to be sure we are both talking about the weekend of 25, 26
January, 2020, the weekend of the 2020 CQ 160 CW contest. If so, I must
register my decidedly firm impression that was the best 160 meter weekend of
my lifetime, what has to be a counterpoint of the amazing 1958 sunspot
Starting with a 160 inverted L/FCP, we first added 80 by tuning the aerial
wire/FCP as an end-fed half-wave L. That's been up, works very well, off
beta status. But 40 meters was always a killer. Many, many, many hours of
EZNEC runs chasing something to get 40 meters on the same aerial wire/FCP.
Bu
Issues of a fixed capacitor as seen in this thread have been a similar
problem for a network two-banding an 160m Inv L over FCP.
k2av.com has a section on this problem how to do 500 with three 170 pf
barrel style HEC caps. The section also has links to HEC reference material
on how to derate those
The need to disconnect the feedline shield is to block common mode signals.
A K9AY approved **EXCELLENT** common mode block (not a regular "balun" with
likely awful blocking on 160m), or (GASP) an isolation transformer will
take care.
In the case quoted, with the coax center contductor opened, the
Pete,
See RF parts.com, search vacuum relay VC2T-13.2. SPDT will allow you to
change your mind about what state you want with no voltage to winding. And
you will not need to buy a 24 volt power supply.
Rated 12 kV will handle anything ham QRO. These are new, currentLy
manufactured items.
73, an
I agree with Bob. I think the name BOG is firmly entrenched, whatever the
electrical differences. Oh, I could propose a new name, but I doubt it
would ever stick.
I'll go back to my Otter/Platypus to propose a parable:
Suppose that the Platypus had instead gotten the name of Duckfaced Otter,
and
BOG is not a Beverage. So don't think about or treat a BOG like a Beverage.
The relationship between a Beverage and a BOG is like the relationship
between an Otter and a Platypus. Both are aquatic mammals, but the Platypus
lays eggs and has other very un-Otter characteristics.
Early in the decade,
Hi Sam,
Not particularly surprising as technology has caught up and you can get a
two port VNA for $50. Chinese knockoff of a European device with an
absolutely ghastly user manual. But it shows no future for something
manufactured with parts and in a manner that requires a $500 price to
market at
Hi, Dave,
Can't know the final score until all the logs with their TX power levels
show up at Tree's place. What N1MM shows is as good as any beforehand. But
there is no way to know points for working an LP or QRP station until all
the logs are in Tree's data base. I don't know if the score sharin
Just remembered one other thing, the hours I use are SOLAR noon to SOLAR 2
pm. Where I live daylight time 10 am is 9 am standard time, and 8:50 am
Solar time. In Lexington, Ky, USA that would be 8:23 AM. So during summer,
I wait until 1 pm to measure. HOWEVER...
Even then there can be residual pr
Decidedly possible.
W4KAZ RBN node is 7 miles away. There is skywave contamination almost every
evening with large drops. It can be increased or reduced by the choice of
antenna at the RX site, but not eliminated.
The largest signal to the RBN is usually high noon. That is fudged by wet
local con
Hi, Jeff,
A direct strike can easily overwhelm a single ground rod, not so much
because of the ground rod, but because of the resistivity of the
ground that is touching it. The condition of the total interface of
rod touching dirt limits it's current carrying capacity. If
sufficiently spread, a ne
Hi Mike, et al.
I have personal acquaintance and knowledge of a number of hams who have put
down a BOG that was anything but straight. Some with 90 degree bends,
another shaped like a Z, and less extreme bends. The end of those small
lot, weird property situational BOG attempts, is that a few didn
Hi, Ed,
You're on the right track.
A "beverage" ON the ground really is NOT a beverage. For two things to be
called the same genus, they need to have most everything in common. This is
true of big yagis, little yagis, short yagis, long yagis, trapped yagis,
linear loaded yagis, end loaded yagis,
Hi Jerry,
65% is in the wheelhouse for DOG VF's. 400 to 600 ohms seems high. In the
12 county area around Raleigh/Durham/Chapel Hill, we measured 120 - 200
ohms resonant R.
The variation you experienced, and also high R readings could be explained
by a few nicks in the wire insulation toward the
Hi Wes,
Thanks for posting up the Severns material. I had started looking for that,
but without memory of exact words (which makes searching difficult), and
without absolute certainty that Rudy was who I heard it from. You likely
saved me an entire working day. If you're ever in the area, that's w
Hi Mark,
Response to David farther down.
Short answer: Just one relay, really.
Long answer:
There is a lot of misinformation about FCP's floating around out there,
essentially because most don't know anything at all about FCP's and a
certain few of those keep talking anyway. I don't have a lot
I gotta agree with Rob. An inverted L aerial wire will hear ALL the noise
that is around. Mine sure does. RX antenna will help enormously if there is
a place to put one that does not get the noise second hand off the L. Not
enough room? A bit complicated, but "repeated" noise off the L can be dealt
It does seem, at the moment not being entirely wrapped up in ham
radio, that there certainly is the analogue of OK1YQ in just about
every realm of life. I can think of a few names that I personally
found intensely irritating in the particular circumstances. So I DO
understand the pique. When will t
For 160 meters don’t think of a jet as a reflecting surface. Try “thick
wire”. Particularly one in a tight turn and wings significantly vertical.
73, Guy K2AV
On Sun, Feb 3, 2019 at 2:10 PM Paul Kiesel via Topband <
topband@contesting.com> wrote:
> I don't have an explanation for this, but I h
I would not repeatedly bend any coax with a solid center conductor. Which
leaves RG142 for permanent routing. Jumpers to and from back of TXR and
amps etc are always RG400. Windings on cores are always RG400. RG400 shield
weave and center conductor made of very fine strands of silver coated
copper.
>
>
> -Original Message-
> From: w5zn
> .snip
> Last weekend leading up to and during CQWW 160, all of the FT8 folks
> bitterly complained that the CW guys had taken over the entire band and
> destroyed FT8.
> .snip
In the US anyway, it was pretty clear to me that folks were stee
What is missing from that discussion about a maximized use of a given
investment, is whether that investment however well maximized, is in fact
adequate for the particular ground characteristics and circumstances.
Four rotten eggs will deliver a rotten omelette no matter what you mix in
or how nea
Have to pay attention to everything he is reporting. He added a feedpoint
choke per K9YC at the same time. Which may, depending on the physical
connections at his feedpoint, have removed the feedline shield as an
alternate “radial” in parallel with the increasing but still not full size
radial syst
Hi, Fred. You said:
"Guy K2AV I'm guessing you don't like rg58 because of the center conductor
moving outwards??"
Nope. :>)) RG58 is not RG400. That's why I don't like RG58.
RG400 is what should be used for winding coax on toroids. RG400 is a
currently manufactured item. It is INTENDED to han
Hi Todd,
Have a look at the calculator at
https://chemandy.com/calculators/return-loss-and-mismatch-calculator.htm
This calculator allows me to compute the SWR for your data points, as if
the Z zero of the meter was 32 ohms. This is important because so many
excellent antennas exhibit raw feed R
They were all worn out from the NAQP, which included a mob and a lot
of good results on 160. :>))
73, Guy K2AV
On Sun, Jan 13, 2019 at 5:26 AM Tom Boucher wrote:
>
> Outstanding sunrise conditions at 0800 today on top band. FM5BH on 1818 KHz
> S9+. ZL3IX on 1826.5 long path peaking S8/9 on my me
"Nobody on CW" is probably answered better by few people listening and
most not having implemented an automated way to pick up on CW CQ's.
That's sort of built into the usual ham shack blend of FT8 and logging
programs.
In the contests, anyway, even RTTY tests and the recent RTTY roundup
with FT8
ion is, given the low current at-ground feed point with Zo ~
> 2000-ohms or so, what sort of improvement might one expect if the radial
> field was significantly improved?
>
> 73 to all - Dick/w7wkr at CN98pi
> =
> Message: 1
> Date: Mon, 7 Jan 2019
currents were correct, am I overthinking
> this about potential losses?
> 5. Do other Topbanders have experience with measuring radial current phase?
> 6. Most of the literature gives strong admonitions to "equalize" radial
> current "within a few percent" (ON4UN and
Apologies to all for delay in response.
Losses related to ground and close dielectric materials remain the
single monster gorilla in the room for improving TX performance of
vertical antennas.
Setting aside content on k2av.com relating to the FCP, the other
issues in that web page’s "Loss List" s
Hi Chet,
Before we start, a disclaimer: I still have my MP, maybe I'm a radio
hoarder. I do have a 75A3 and a Johnson Ranger and Courier and an FT 101ZD.
The only long used radios I don't still have are my SB300 and SB400, and I
wish I hadn't sold those. So my MP bashing is technical and proven, a
I agree with Rick,
If an N connector is not designed to fix the relationship of the center pin
(soldered to the center conductor) to the body it should not be used
outdoors or on long runs of unburied coax exposed to full seasonal
temperatures.
I learned that the hard way on unfixed pin N connect
Hi Terry.
Whatever you are referring to didn’t make it through the reflector. Can you
provide us with a URL link to the connectors?
Thanks and 73, Guy K2AV
On Tue, Dec 4, 2018 at 9:46 PM terry burge wrote:
> Hello guys and gals,
>
>
> I just bought 10 of these from China. Free shipping if you
Hi Kenny,
You set your curiosity on a real toughie. Tread where angels fear to go,
and all that.
The N4KG feed is extremely situational in its efficiency, or some
efficiency, or no efficiency.
It can be modeled in NEC 4, the version of NEC which allows you to have
conductors both above and in th
Have to remember that W8JI, ON4UN and many others were not lying or
deceived. What we are finding out is that a major rule has some exceptions.
If you're talking to a club member in the US, you better point them to
verticals, T's or inverted L's.
One of the missing aspects of dipole vs. vertical c
Hi Mike,
You certainly are not the first to experience an antenna "grounding" that
makes unbelievable the contacts actually made with it. BTDT for sure
Another thing is our common predilection for thinking that SWR means
anything other than when it has a large change, something has happened. But
Hi, David,
Regarding the FCP 160-80 meter dual banding project and circuit component
sizing particulars ... I completely understand the urge to downsize.
However, the devil is in the blasted details.
This question faithfully recurs from time to time: Can we use smaller wire,
use a smaller core, s
Went looking for them after finishing the 0300Z CWT on 160m. He was
down the band some from where the CWT mob had been. I had seen
somewhere that they were working up 2. Called him once up about 2 and
worked him about 0410Z. Listened for a while. He was working a mix of
EU and USA.
Clearly a fine
Quite late in response, partly done much earlier. Sometimes I have time,
and sometimes I have a house and a spouse.
Peter's original question in this thread was why a radial and mesh mix in a
counterpoise should have the radials and mesh bonded together. That is
quite a different question than why
Hi, Julio,
Sorry for delay. I didn't see this post when it hit the reflector.
Around 2009 before publishing the FCP design, the change to polyimide
coated wire and Teflon sleeve brought a string of toroid device failures to
a sudden and permanent halt and turned previously "fragile" devices into
I sometimes get around to posting on these things only when I'm not buried
by something else. So late as this may be...
I'm sure that the writer truly meant "worked very well", but that is not a
scalar description. "Worked very well" is a degree of satisfaction, however
else someone may measure th
Hi Mike,
For elevated 1/4 wave radials to work well, they need to be carrying the
same RF current away from the common center point. This is to produce near
net zero RF fields at the ground. 1/8 wave elevated radials with an
isolation transformer per k2av.com will do better than the same number an
Essential point that might be missed: each one of the elements, one at a
time, must be tuned independently with the other three elements down. This
is the initial tuning. If when everything hooked up characteristics are OK
then you’re done.
Finish initial tuning and it's *not* OK? To slide the ARR
Hi, Ed,
Taking the vertical wire up next to the tree trunk will be fairly lossy.
That usually also means that some part of the horizontal wire is going
through the tree canopy, which will be further lossy. See k2av.com . Click
on the green index button "Place an Inverted L". Also read "Design an
I
hich uses the
aforementioned "killer coil". :>))
73 folks,
Guy K2AV
On Thu, Aug 30, 2018 at 10:34 PM Wes Stewart wrote:
> I agree with Rick. The advantage to the edge-wound inductor is the better
> heat
> dissipation; needed because the Q is lower :-)
>
> Wes N7WS
&
The referenced Ameritron/MFJ part number is an 11 inch coil (aka BMW coil
stock of old), coil wound into 4 polystyrene rods. This one is 3 inches
diameter, four turns per inch, 10 AWG tinned bare solid copper.
This stuff is used in various Ameritron amps as part of the output Pi-L
networks. I have
Hi, Gary.
It is not clear from your description exactly how the "sloper" is fed,
where the radials are in relation to the tower, etc.
Quite a few things could be responsible for a change like that.
Not clearing the leaves off the ground over the radials will gradually bury
them and result in a s
160 is coming back from 2, maybe 3 weeks of doldrums and not making it over
the Sierras, or tickling Europe.
RBN's tickled from CWT on 160 2345 to Wednesday night local
Hits to the east: OL7M
Hits to the west: N7TR(2) VE6WZ(3) N6TV VE7CC AC0C
Also hearing buoy signals on 1828. AU8 was S
Hi Mike et al,
BOGs have a well deserved reputation for being cantankerous, with great
results for K4ABCD over here and awful results for K3WXYZ over there. There
is a part of the explanation for that variation that really isn't fixable.
But better outcomes are possible with a more detailed explan
During the last 15 mins or so of CWT, stations worked on 160 included:
on the east G4UFK, not in test.
on the west N6RO
Western RBN's VE7CC, VE6WZ, NC7J, east spot (not RBN) ON7PQ.
Don't sound like a dead band to me. Some number of signals were better than
20 over.
If you're starved for 160 tim
Methinks hamdom underestimates 160 propagation in the summertime.
Working DX through QRN and having reduced opening time during summer, these
make working the DX irritating to the ears and inconvenient, but not
impossible. Even with no more than an inverted L, I still hit European RBN
later in the
Howdy, all.
<<>>
Peter's post here follows a direct inquiry some weeks ago that I was
unable to fully answer before now.
Wire mats connected to ground radials have been around a long time and
instances reported improving sparse on/in ground radial systems. So an
intuited extension to a mat on th
Hmm, this last week was still hitting RBN over there, and worked G3OLB
two different days a little before his sunrise. One of those was a
long lovely old time 599 QSO with Tom, like I was working someone in
Ohio on 80 meters.
It might be "season" over, but 160 sure isn't over, at least not yet.
I
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