Ive been receiving duplicates for quite awhile Charlie, OK now.
Carl
KM1H
- Original Message -
From: "Charlie Cunningham"
To: "'HAROLD SMITH JR'" ; ;
Sent: Sunday, February 23, 2014 10:03 AM
Subject: Re: Topband: from Mac Reynolds, w9evi - Rellector post repeats
Thanks, Harold!
The only benefit of getting it better would be a bit more 2:1 VSWR bandwidth
to keep the amp happy but even then there is sometimes a gotcha when tuning
an antenna.
Carl
KM1H
Subject: Re: Topband: Shunt feeding the Skyneedle - new developments
Well, you can do all that, Carl
But if your s
Chomp chomp, burp.
Some critters travel under the snow and vegetation for their vitamins.
Was that double female or burnt PL-259 an import? The coax dielectric
shouldnt make any difference and maybe it wasnt sealed properly and water
got in. Ive blown import junk enough times in the past to ge
Absolutely and I had the pleasure of meeting him and hear him speak.
Unfortunately his very public arguments with Warren Bruene in QEX and
elsewhere over the "Conjugate Match" and then showing up on various forums
to publicly push his last book as part of his legacy (which contains his
final w
Carl: I've read, at several places, that sleeve baluns are effective at
VHF and above but not at HF frequencies..thoughts??
72/73, Jim Rodenkirch --- former Tempest inspector for the U.S.
Navy..ah...Tempest comcerns - the good 'ol days hi Hi!
Oh, the fun we had almost living in a scre
- Original Message -
From: "Jim Brown"
To: "'TopBand'"
Sent: Saturday, February 15, 2014 12:15 AM
Subject: Re: Topband: Palomar R-X Noise Bridge
On 2/14/2014 7:00 PM, Charlie Cunningham wrote:
All generally true, I expect, but I also believe that dielectric constant
and dielectric
Looks like we dodged the bullet here also. Storms are unpredictable and go
anywhere from right up the Hudson River valley to out to sea
Watching the storm track it took a sharp right turn over LI, NY and then a
NE tack past Boston and out to sea.
About 8" of fluff which stopped about 4PM and
Any idea how much top loading that 5 el 46' boom monster contributes?
At a prior QTH in the 80's I had a 90' 25G toploaded with a 10-15-20M stack
of PV-4 monobanders and about 18' of mast. The 20M boom was 40' and the
tower resonated at 1620KHz if I remember. Sure worked great once I figured
iable caps in oil as substituteforvacuum
variables
That uses the thermal properties outside a resistor, not dielectric
constant properties in a capacitor :-).
Tim N3QE
- Original Message -
From: ZR [mailto:z...@jeremy.mv.com]
Sent: Thursday, January 30, 2014 11:28 AM
To: Tom W8JI ; HAROLD SMI
The 3" line sections will handle more (-;
And as many BCB and other commercial stations are being dismantled it is
available at scrap prices or less.
I have several large rolls of 1 5/8" here for sale.
Carl
KM1H
- Original Message -
From: "Herb Schoenbohm"
To: ; "TopBand List"
S
The large Bird dummy loads use oil up into the low microwave region.
Carl
KM1H
- Original Message -
From: "Tom W8JI"
To: "HAROLD SMITH JR" ; "Shoppa, Tim"
; ;
Sent: Thursday, January 30, 2014 5:32 AM
Subject: Re: Topband: Submerging variable caps in oil as substituteforvacuum
vari
Some of my best Antarctic area contacts have been with a horizontal antenna
and the very best had the apex at only 50' and the end at 3blew the
pileup away with one call and was told later at Dayton I was at least 10dB
above the 10 KHz+ of callers. Not bad for a fast installed antenna at the
It shouldnt be too hard for some to install a wire mesh of plastic coated
rabbit fencing below the antenna, after a few months the grass will grow
well past it allowing mowing.
I did a variation at another home in the 80's when 60+ on ground radials
didnt perform as expected using a 100' shunt f
That gives only a 509 Ohm reactance at 1800 Pete. Going to an oft suggested
100uH raises that to 1131 which is possibly sufficient. I use 220uH for a
2488 XL simply because I have a bunch from a hamfest and they work fine for
me in similar service.
Carl
KM1H
- Original Message -
Fro
Ive been using a 6AH6 in the VFO and regulating the screen and plate with a
120V 5W zener and suitable dropping resistor and a 47uF 'lytic with a
.01disc. Grid drive is still sufficient for 100W+ on 10M with full audio
after those mods are also done.
A 6AH6 is also the better tube in the VF-1, J
Interesting timing Bruce!
Last week I had noticed my NW/SE 2 wire Beverage acting funny, poor F/B in
particular along with it being noisy.
It turned out to be the ground rod clamp had loosened, the screws doing the
clamping and holding the #12 wire were completely rusted. This rod had been
i
Here is Toms review on the MFJ-1025 along with his modifications to improve
it. After doing the mods and using it extensively Im totally happy with it
used only on Beverages and BOG's and have no BCB problems.
http://www.w8ji.com/mfj-1025_1026.htm
The $330 I saved over the NCC-1 was better spe
I use military WD1A telephone wire which cost almost nothing but UPS for a 1
km unused reel.
At 500-750' for Beverages the extra RF loss tilts the wave more and and has
excellent directivity as 2 wire reversibles. I use black electric fence
insulators into trees at convenient intervals and the
Ive had an early and late K3 here on loan and have kept my TS-950SD. What Im
really looking for is a TS-950SDX.
One thing Kenwood does better is the RX/TX audio on SSB in particular and
Ive had a 830, 930, and 940 prior.
The 950 series switches in a 20 or 30dB pad (I forget which) between
50
Ameritron sells the 170pf doorknobs used as input padders on 160 but they
arent cheap. The value isnt that critical.
Carl
KM1H
- Original Message -
From: "Herb Schoenbohm"
To: "TopBand List" ;
Sent: Thursday, October 03, 2013 10:45 AM
Subject: Topband: Fixed capacitor source needed
In the late 60's I made a coaxial capacitor from a length of RG-17 to supply
most of the C for a 40M Bobtail. A little too big to fold and the losses
were not even worth thinking about.
On 160 with a decent coax what would be the effect of a little loss besides
a little heat ?
Carl
KM1H
---
I would think a 5/8 would be good for the various 160 contests where a lot
of contacts are short distances and the extended groundwave plus some power
at 40 degrees could be useful.
Wth 3 antennas, a 1/4 wave, a 5/8 or 1/2 wave and a horizontal cloud warmer
or for DX ducting, would cover all bas
Back about 20 years ago K1MEM (SK) and I worked about 20 miles on 160 with
Heath Cantennas in the basement at both ends. Both rigs at 100W. With no
band noise the pee weak signals were perfect copy.
This started when I heard Jim testing while I was on the Beverage. I called
him on our local gr
It is also used in much smaller LV transformers such as filament and
welders.
Carl
KM1H
- Original Message -
From: "Grant Saviers"
To: ;
Sent: Monday, September 16, 2013 11:46 AM
Subject: Re: Topband: Topband Digest, Vol 129, Issue 23
Try a large transformer shop. 5kw and up tra
Would shielded CAT5 be useable as a Beverage feed? It would be easy enough
to match with a binocular core at both ends and I just happen to have about
300' doing nothing.
Carl
KM1H
- Original Message -
From: "Jim Brown"
To:
Sent: Monday, September 09, 2013 2:12 AM
Subject: Re: To
Look at it as 2 ground planes with the lower feed point 1/4 wave above ground
along with its elevated radials which should make it pretty much ground
independent according to what has been published on here and elsewhere.
The second ground plane would be identical with 1/4 wave spacing from the
The last reel I bought was 2.5km for $40 plus about $20 shipping from Ohio
about 3-4 years ago on Fleabay. It was listed strangely but I forget how; I
believe I searched for "military wire" or something similar. I see some
speculators peddling it at .10/ft
Carl
KM1H
- Original Message --
Jim
You cant get any more reliable than 1/2" Andrew or similar hardline. In this
area its free or very cheap and often with connectors as 2 way shops close
down and customers keep migrating to cell phones.
Paging companies are also folding up.
Im sure you wont find a 700' run but 100-200' ar
It pretty much boils down to what frequencies you want to cover. To cover
down to the 600M band and below use more turns and to go up to 30 or 20M the
2-3T at 50-75 Ohms does well.
I use a VNA and 73-202 transformers to tweak what I want and the effect of
interwinding capacitance can also be s
- Original Message -
From: "Tom W8JI"
To: "topband"
Sent: Tuesday, August 20, 2013 4:00 PM
Subject: Re: Topband: RX antenna transformer winding (pure
resistancetransformation issues)
Unless you have a system with pretty high common mode impedances, winding
spacing means nothing.
You can always fire up on AM on 1945 Tuesdays at 830PM East Coast time. Get
a chance to see how effective all those antennas weve been discussing
recently really play.
http://greyhairnet.org/
Carl
KM1H
- Original Message -
From: "James Rodenkirch"
To: "Charlie Cunningham" ;
; "'Mik
Its been shown on here and elsewhere, by many and many times, that once
beyond a modest radial field the field strength goes up marginally to the
classic 128.
Ive stressed many times that a mesh screen out from the base 50' or so for
160 does more for the signal than going from 32-64 or 64 to 12
- Original Message -
From: "jim rogers"
To: "ZR"
Cc: "Topband" ; "Rudy Severns"
Sent: Monday, August 05, 2013 9:03 AM
Subject: Re: Topband: tree losses
Carl et al,
Interesting, my 80M full size (66') sloper comes within about 5 ft of a
I cant think of anyone claiming a tree is resonant on any particular
frequency but that doesnt mean it cant be used as an antenna. Anyone
disagreeing with that should discuss it with the military who have been
loading trees for decades for emergency communications; in the 3-8MHz range
if I reme
Check at the metal recyclers; Teflon insulated wire brings little money as
scrap and is rather common where there is high tech and military
contractors. Regular tinned copper and stranded PVC insulated is also common
and around here magnet wire as used in motor shops is hard to find in any
quan
It still boils down to location and propagation.
Nobody is King all the time and some hams have real jobs that keep them away
during some important openings.
Charlie had a very modest and average location and was near the top of DXCC
even before he put up a yagi. Maybe one of those places rum
That excuse doesnt cut it Mike and from what I was told by those who were
there his power would be considered pretty normal these days. You can only
get so much out of a pair of 450TL's, 4-1000A's, etc.
Some on here that you seem to look up to run more than that.
OTOH you completely discounted
When I was floating around in the Med for the USN in the early 60's, the
bases I visited were all using rhombics pointed at DC mounted on 80-120'
wooden poles. These consistently outperformed a 20M 6 el Telrex at similar
heights at the ham station into the same area. The arguments were going on
On a side note WD-1A conductors are a copper/cadmium alloy; whatever that
means in RF resistance. Fine for a Beverage but what is the loss?
Carl
KM1H
- Original Message -
From: "Gary Smith"
To:
Sent: Thursday, July 25, 2013 1:22 AM
Subject: Re: Topband: Topband Inv-L Joy
Had a mo
I would think that with optimized F/R for your Beverages that at least one
path would be somewhat quiet.
I was on 160 AM for a few hours last eve and QSO's out to 300-450 miles was
good copy with stations at the 100W level at both ends. Northern Maine,
Buffalo, WPA, and others were worked with
On 7/21/2013 8:49 AM, Tom W8JI wrote:
I can't understand why throwing some ferrite beads at a problem, or
changing the supply, are the only two solutions.
Many times, if not most times, a few .01 uF line voltage rated bypass
capacitors are significantly better than a sting of cores, or a
Same here for about 3-4 years now with the first one I tested. OTOH its down
quite a bit on the real low angle signals. Experimenting with a 2 wire and
maybe some phasing.
Carl
KM1H
Noticed many storms have caused rain static on every ham antenna except my
BOG. The BOG was very quiet and h
On 6/12/2013 3:34 PM, Tom W8JI wrote:
I can't think of a reason to pick 90 degrees as a target value, unless it
is a system designed to protect something on groundwave that happens to
be straight in line with the elements.
I agree. For me, the primary design objectives are maximizing forwar
It is more "cookie cutter" to use series fed quarter wave elements with
current feed (95% of people still do that wrong), but if you have a little
patience and don't mind experimentation, you could certainly make it work.
I phased dissimilar elements many times over the years, with the grossest
Your forgetting that the front end is still broadband and wide open and
being blasted into intermod many times. These days not everyone is blessed
by the latest gigabuck rig which still is wide open until it hits the
roofing filter which wouldnt be there if there werent problems.
My first
On 5/21/2013 1:18 PM, ZR wrote:
Are you now claiming that the thousands of bead choke baluns in use for
decades at HF and 6M dont work?
I have published extensively on this, first in 2005 in a peer reviewed AES
paper, and later in my RFI tutorial. All of this work is on my website.
W1HIS
Are you now claiming that the thousands of bead choke baluns in use for
decades at HF and 6M dont work?
I suspect that those who have been happy with the results in mimizing
feedline radiation would heartily disagree
Carl
KM1H
- Original Message -
From: "Jim Brown"
To:
Sent:
Now you have to use it up the band on AM where there are still plenty of
833's in use.
Carl
KM1H
- Original Message -
From: "Mike Waters"
To: "topband"
Sent: Sunday, May 12, 2013 10:44 PM
Subject: Re: Topband: 160 and 80 meter QRN prediction
Well, mine's not much to look at. I
Im another who has been using the RF Industries tool for well over 20 years
for both 50 Ohm and mostly CATV or Belden RG-11 foam. No failures or funny
things happening.
Carl
KM1H
Mike,
Here's a link to an article on crimp UHF connectors with suppliers. It's
from 2008 so the prices may have
On 2013-05-08, at 10:40 AM, John Harden, D.M.D. wrote:
I am not offended at all relative to the "fine whiskey" deal. To begin
with I'm too busy to worry about trivia such as that.
I agree, John---there's nothing at all wrong with a fine whiskey,
anyway...!
If that's not some PC kop's
- Original Message -
I dont care for forced signatures...period. Just more useless bandwidth to
be erased when replying so as to not aggravate you with untrimmed messages.
Carl
The "fine whiskey" signature has been there for a long time. I am
surprised this has become an issue.
How about replacing it with nothing! I find the current one offensive and
dont think any forced signature is warranted.
Carl
KM1H
- Original Message -
From: "Rick Stealey"
To:
Sent: Tuesday, May 07, 2013 10:55 AM
Subject: Topband: fine whiskey is a daylight beverage
"fine whiskey
How about folding the shields back a little? I think that's a superior
way
of doing it as opposed to cutting them all flush with the jacket.
Be careful doing that or using any non-approved assembly method, or using
improper connectors. Many cables (I'm not sure exactly what percentage,
but
- Original Message -
From: "Jim Brown"
To:
Sent: Wednesday, April 10, 2013 12:49 PM
Subject: Re: Topband: RG-6 coax
On 4/9/2013 9:19 PM, donov...@starpower.net wrote:
CCS RG-6 may be a problem for powering some remote devices such as
preamps or relays through the cable because CCS
Gilbert makes ends for UHF and N in male and female.
http://www.corning.com/gilbert/broadband_products/trunk_distribution/index.aspx
LRC is another.
http://www.westfloridacomponents.com/mm5/graphics/ds7/F625E.pdf
Also CATV enclosures used on the poles for splitters, injectors, etc are
convenien
I use CATV hardline everywhere here and have had some left over bare coils
on the ground for the 24 years Ive been here. Except for staining from
leaves, etc it is still fine appearing. The ground is mostly leaves, twigs
and pine needles. The bare cable CATV runs in this town have been up even
ON4UN's series of books have always had way too many individual assumptions
and we all know what happens then.
Those books offer a place to start and then apply your own unique soil and
local conditions and change as needed.
Carl
KM1H
- Original Message -
From: "Buck wh7dx"
To:
S
Since the radial field for any height vertical has equal importance the only
way to get 1/4 wave efficiency is to have zero RF loss in the loading coil
and matching network. Cryogenics anyone?
There is no magic wire minimalist radial or counterpoise that accomplishes
that. All they provide is
Elevated radials avoid a collection of lossy mistakes that one finds
in less than optimal buried/on ground radials. If a full size radial
system is done properly, dense, uniform all around, you will not be
able to tell the difference. If there were huge efficiency issues
with buried radials nev
Hi Guys,
Forgive me, please, if I'm re-hashing a bit of the "...same-old, same-old"
here, but I am really curious as to any "real world" experiences that
might be out there in the matter of elevated radials, vs. those that are
simply laid atop the ground...
My arthritic knees here are mak
The March QST has a broadband dipole feature article.
Carl
KM1H
- Original Message -
From: "Tom Boucher"
To: "160 reflector"
Sent: Tuesday, February 26, 2013 8:42 AM
Subject: Topband: Broadband dipoles
It's the reference to termination resistors in the SPX data sheet that
bothers
You can use any coax you want but the lower the loss and C per foot the
deeper and sharper the null. I use CATV type RG-11 foam on HF which worked
fine for 2 op contesting, and 7/8" Andrew hardline on VHF and up.
Carl
KM1H
Subject: Topband: 160 Stub
Hello... B-4 the upcoming contest weeken
A tuneable preselector such as an Ameco or Palomar may provide the needed
front end selectivity. I used a Palomar I added a RF gain control to on the
TS-940 before modifying the front end in the late 80's and it eliminated all
the BC problems. Set the gain pot to a bit over unity gain.
Carl
KM
I bought a similar deal from them about 3 years ago, great for Beverage and
other switching and no failures or intermittents yet.
Carl
KM1H
- Original Message -
From:
To:
Sent: Tuesday, February 12, 2013 1:58 AM
Subject: Topband: Fifty low power sealed SPDT RF relays for five bucks
Commscope, Times and what ever else quality distributors such as Tessco
carry are what I suggest.
Also see about buying from the local CATV installation contractors.
Carl
KM1H
I have been watching this thread with interest, I am preparing to put up a
receive array and it will have to be som
- Original Message -
From: "Tom W8JI"
To:
Sent: Friday, January 25, 2013 1:00 PM
Subject: Re: Topband: alternative to vacuum variables
Yes, there is a great solution, I'm using it for almost 10 years. The
issue
with capacitors in 160m is the dielectric an most capacitors get hot a
Pete,
I used a big 300pf breadslicer with somewhere in the 7.5 to 9KV range ( I
forget the spacing, it was a vintage Johnson) and a couple of 857 size
ceramic caps for my Omega at a prior QTH.
Smaller spacing and lighter duty fixed caps didnt survive the 1200W of my
own amp but the rebuild wa
Im running shielded CAT 5e from the router up in the office to the basement
and none of the rigs bothered it but I did have to use a single 31 core at
the router outputs to eliminate its noise; the 6 CAT5e cables are grouped
together thru the toroid, and another at the DC input. The cable modem
- Original Message -
From: "Steve London"
To: "Topband"
Sent: Friday, January 11, 2013 4:12 PM
Subject: Topband: 160 shunt fed tower update
When we last left this adventure, I was shunt feeding my 110' tower on
160, which supports a multitude of yagis and wires. Unfortunately, I wa
Typical reactance rule of thumb is 5 to 10X the input impedance of the
tube(s).
In some cases it is much less and the 160M input network is modified to
compensate.
#18 or 20 enamel wire would be suitable for 4A and be a lot easier to wind
than 12 and require a lot less ferrite.
Carl
KM1H
Is the 4x4 pressure treated? Or from a local sawmill and uncured?
Both will have an effect.
Carl
KM1H
- Original Message -
From: "Glenn Biggerstaff"
To:
Sent: Monday, January 07, 2013 9:30 PM
Subject: Topband: A 160 Meter antenne puzzle
Hi everybody and happy new year .
I have w
I use an old CATV RF sniffer that was $10 at a hamfest, they got replaced
whenever the systems added more bandwidth and are used by the techs to
certify a new build or later to do leakage tests. Tuneable, AM/FM detectors
and an analog meter. Mine goes to 400 MHz and has found every problem Ive
Ive personally seen the results of HF to 2M QRO (usually legal or close to
it) on trees when concentrated by yagis that were barely above them. Id be
there as a visitor or doing tower/antenna work and sometimes tree trimming.
The top leaves and needles turn brown when they are close enough.
Of
Subject: Topband: Trees (not the N6TR kind)
Pine trees taller than 100 feet could be an issue, since they could be
near resonance and lossy - a sad combination when within a wavelength or
so of vertically polarized antennas. If your trees are 50 footers, they
would probably not be of concern
If youre building a Beverage/BOG as the thread title indicates, resonance
does not matter, it is a nonresonant slow wave antenna.
For a resonant antenna up in the air and used for transmitting the
insulation adds 3-5% to the electrical length.
Carl
KM1H
- Original Message -
From: "
- Original Message -
From: "Tom W8JI"
To: "Herb Krumich" ;
Sent: Wednesday, December 26, 2012 3:08 PM
Subject: Re: Topband: Inverted L question
I am right now using an inverted L which is spaced about 4 feet away from
my tower. The vertical leg is about 85 feet. I only have 6 radia
o: "'DAVID CUTHBERT'" ; "'ZR'"
Cc: "'Donald Chester'" ;
Sent: Monday, December 17, 2012 6:31 PM
Subject: RE: Topband: Ground mounted 1/2 and 1/4 wave verticals (was GAP) -
A Hoot! - A "Dream"?
Wouldn't it be somethi
I can think of NO earthly reason,that makes ANY electromagnetic sense to
me, as antenna engineer fo placing a radial system under the end of a
vertical 1/2 wave antenna - "earth-worms" not >withstanding!
** Another case of not understanding the antenna or the purpose and handling
of its cur
The only place Ive found tuned elevated radials being discussed so much is
on ham forums.
A bit over 20 years ago I installed a slanted wire 1/4 wave vertical for 160
coming off the top guy wire of a 160' tower and about 10' out.
Started with 4 radials of roughly 130', trimmed the radiator fo
Which is why military telephone wire as well as old rural Copperweld pairs
are so popular;pacing is a constant and self twisting during installation is
a given.
Calculated self impedance agrees well with results and a properly
constructed set of transformers with minimum C coupling give the be
And one should never rely on a single source of information unless it has
been well vetted. That is something that wont happen on Antennex but there
are enough qualified people on Eham and here to seperate truth and fiction.
Carl
KM1H
- Original Message -
From: "Bill Aycock"
To: ;
I used to work EU on 6-10M crossband in those days since very few had
authorization. Ireland was one that did and quite a few were on.
My rig was a HB 6AG7, 6V6, 829B crystal controlled with PP 6L6 modulators
into an ARRL HB 4 el yagi just above the 3el HB 10M which was above a HB 15M
at about
It just goes to show that what looks good on paper in theory does not mean
it HAS to be the same in the real world.
There is nothing to prevent 2 signals a continent away and with different
antennas from taking completely different paths when one is at either sunset
or sunrise.
There hasnt bee
- Original Message -
From: "Tom W8JI"
To: "Bruce" ;
Sent: Tuesday, December 04, 2012 6:24 AM
Subject: Re: Topband: F fitting adaptors
When using a Ameritron remote antenna switch with SO-239 fittings, does
anyone know a supplier for female F fitting to PL-259 adaptor ?
Thanks,
73
Ive been using those adapters since the 80's when they first showed up and
all were imports I believe. Used outdoors they dont all weather well
externally but have made reliable connections even when on the old RCS-4 for
20+ years and shielded from direct percipitation. Some appear pitted as in
I made roughly 40-50 sporadic contacts using a 1939 Meissner VFO at 5-6W and
a 1934 National FB-XA, didnt even log them. Nothing spectacular since I
wasnt interested in staying up past 10PM (-; Antenna was the inverted vee
at 180'; it was too early for the vertical based on a few A:B listenings
Having operated in Western and Central Europe a few times over the years on
160-40M from average to better stations Ive observed something else.
With the typical 5-7 hour time difference the East Coast hears EU well
before sunset in the winter and its hard to impossible to attract a QSO.
This
- Original Message -
From: "Tom W8JI"
To: "topband"
Sent: Sunday, December 02, 2012 12:46 PM
Subject: Re: Topband: Beverages 2 basic questions
resistors. Id guesstimate the general F/B to be over 20dB on 160. My
feeling is that performance could not be duplicated by various other
- Original Message -
From: "Eduardo Araujo"
To:
Sent: Sunday, December 02, 2012 12:48 AM
Subject: Topband: Beverages 2 basic questions
Many thanks Dean, Carl, Mike, Joel and the rest of you who shared your
opinions about "why so many", probably I missed the point that 3 or 4 db
in
The same holds with loaded element yagis. Gain decreases due to RF losses
but directivity is the same using the same boom length and number of
elements as a full size version.
Carl
KM1H
- Original Message -
From: "Mike Waters"
To: "topband"
Sent: Saturday, December 01, 2012 2:47 P
dB on 160. My feeling
is that performance could not be duplicated by various other loading
methods. If somebody wants to make real world comparisons it might be
beneficial.
Carl
KM1H
- Original Message -
From: Mike Waters
To: ZR ; topband
Sent: Saturday, December 01, 2012 2:4
In addition not all signals come via the direct Great Circle bearings for SP
or LP, at least here in NH which is at a fairly high latitude. Having an
extra direction or more such as over Africa for skewed paths has helped add
a new one or an extra contest multiplier several times.
Next year Im
- Original Message -
From: "Tree"
To: "Eddy Swynar"
Cc: "TopBand List" ;
Sent: Friday, November 30, 2012 9:32 AM
Subject: Re: Topband: November 30-December 2 -- ARRL 160 Meter Contest
On Fri, Nov 30, 2012 at 6:07 AM, Eddy Swynar wrote:
At that time, I established a dialogue with
Sounds like a problem many would love to have!
When you say they work best at 1-3' how exactly do you mean and what are the
antenna details?
Getting more info on what others use is always good.
Carl
KM1H
- Original Message -
From: "Richard (Rick) Karlquist"
To: "Mike Waters"
Cc:
- Original Message -
From: "Ashton Lee"
To:
Sent: Thursday, November 29, 2012 1:20 PM
Subject: Topband: Beverage on Ground
No, I didn't spill my beer.
But I am having very good experience with the roughly 300 foot Beverage on
Ground that I just put in at my house. It is fed throug
Ive never had a quality UHF arc even with a 5:1 VSWR of either sign at
1200-1500W. Never tried an import.
Carl
KM1H
- Original Message -
From: "DAVID CUTHBERT"
To: "John Harden, D.M.D."
Cc:
Sent: Thursday, November 29, 2012 1:30 PM
Subject: Re: Topband: Detuning shunt fed towers
So what does your car radio say to you set to a quiet spot at the top of the
AM band?
Have you eliminated your own property by killing all power and run the K3 on
a battery?
Carl
KM1H
- Original Message -
From: "Gary Smith"
To:
Sent: Thursday, November 29, 2012 1:03 PM
Subject:
Subject: Re: Topband: 2 wire beverage question
** Ive noticed no difference in any weather using field phone wire which
happens to be in wide use by many very competitive contesters and lowband
DXers. With 5 2 wire reversibles here and 750' of 1/2" feedline there is
no need for a preamp.
I'
- Original Message -
From: "Tom W8JI"
To:
Sent: Wednesday, November 28, 2012 10:49 AM
Subject: Re: Topband: 2 wire beverage question
ON4UN states in his book that the wires for a 2 wire reversible beverage
must be installed side by side, but also may be placed one above the
other
Ive often wondered about actual coupling Tim as compared to modeling.
For decades Ive had an inverted vee midway between a pair of full size
sloping verticals all on the same tower. The vee feedpoint is about 20' from
the tops of the verticals which show excellent directivity and performance.
T
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