rman K5EWJ & Trustee N5BPS
From: Jim Brown
To: elecraft@mailman.qth.net
Sent: Monday, July 20, 2015 12:14 PM
Subject: Re: [Elecraft] Verticals on mountaintops
Hi Al,
As it happens, W6GJB and I are building a custom 80M vertical for FD use
on a mountaintop. As part of the design
ona
To: "elecraft@mailman.qth.net"
Sent: Monday, July 20, 2015 11:58 AM
Subject: [Elecraft] Verticals on mountaintops
[I've re-named this thread. Was 'Miniature self-supporting HF Antennas'.]
When the ground is perfect, that's the best case for a vertical antenna.
Keep in mind that the self-supported antenna may not be on a mountaintop.
73 -- Lynn
On 7/20/2015 9:58 AM, Al Lorona wrote:
[I've re-named this thread. Was 'Miniature self-supporting HF Antennas'.]
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Elecraft mailing list
Home: http
Hi Al,
As it happens, W6GJB and I are building a custom 80M vertical for FD use
on a mountaintop. As part of the design process, I've compared it to an
inverted Vee at the height where we could rig it without trees. The
model, of course, is for "flatland," and while HFTA can tell us how
being
[I've re-named this thread. Was 'Miniature self-supporting HF Antennas'.]
When the ground is perfect, that's the best case for a vertical antenna. If the
ground becomes worse than ideal, then the losses increase and performance is
not as good and the pattern changes: less radiation to the horizon
They sell Buddipoles on their website. Does that help?
Wes N7WS
On 9/12/2014 2:42 PM, Dr. William J. Schmidt, II wrote:
Does Elecraft make antennas now?
Dr. William J. Schmidt - K9HZ-J68HZ-8P6HK-ZF2HZ-PJ4/K9HZ-VP5/K9HZ
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Elecra
On Fri,9/12/2014 3:45 PM, Joe Subich, W4TV wrote:
The common mode choke
does not have sufficient choking impedance where the feedline is an
odd multiple of 1/4 wavelength and the stress on the core can be very
significant with high power on those bands.
That part of the problem can be solved by
Well, the toroid in my R5 was anything but "large" (I don't even
think it was 1.5 inch diameter) and there was no way that network
was efficient.
I happen to have an R5 network board (need to drill a new case since
the old one failed). I haven't dragged it out to measure the toroids
but from
via Elecraft
Sent: Friday, September 12, 2014 12:17 PM
To: mbyr...@tampabay.rr.com; elecraft@mailman.qth.net
Subject: Re: [Elecraft] Verticals
Mike, I think you will find that the vertical is a better antenna for
stations more than 2,000 miles from your QTH, differing results for stations
between
Mike, I think you will find that the vertical is a better antenna for stations
more than 2,000 miles from your QTH, differing results for stations between
1,000 and 2,000 miles and poorer for stations nearer than 1,000 miles. An NVIS
attic antenna or a stealth low dipole may be a beneficial add
Good Day,
I am currently using a modified Cushcraft R8 with my Elecraft K1. I had never
considered a vertical before the R8 and this was a compromise with my
neighbors. Originally I had a dipole but that was only for 40 meters. I bought
the R8 with the idea of multiple bands without a tuner. Be
Well, the toroid in my R5 was anything but "large" (I don't even think
it was 1.5 inch diameter) and there was no way that network was
efficient. I might also point out that, generally speaking, it is often
extreme overheating (usually voltage overstress) that causes a toroid to
fracture int
There was nothing really wrong with the R-5. I used one for almost all
of my 12 and 17m operating as 9L1US in the 1990-91 time frame. Maybe
all you needed to do would have been to mount it on a steel railing atop
a three story building on a 400 ft. hill overlooking the Atlantic. :-)
The larg
I have to agree. The R5 was terrible. In a restricted neighborhood I
planted one about 8 feet off the ground painted with camo colors. I got
out - but not well. I decided to try the GAP Titan. Night and day
difference. I eventually went to a pair of phased verticals on 20 with
elevated rad
Bill brings up a good point. For some people the results are all that
count and 100 foot tower with multi-element beams and legal limit amps
is the only way to go. Fortunately, that is only some people. I listen
to friends who have been very successful with a long wire and a 10 watt
QRP rig (in
> The rest of the world is very happy playing a different game then us
> before the bands open up to the States!
> WE are nothing but a wall of noise.
How true ... I can work other 100W and vertical dipole stations almost
anywhere as long as I can hear them over the neighborhood big screen
TVs,
Not to heap coals on the fire, but I also owned an early R5 and it was a
terrible performer. I had it over a year and when I finally got rid of
it and put up a simple 20m vertical in the exact same spot on the roof
and fed it against random length wires as a "ground plane", the
improvement w
I think some folks misconstrued my Vertical comments.
They work. They load. They radiate.
They worked for me in the circuit I wanted to complete.
Doesn't matter what the other station has.
The first time I was 5Z4PI it was 1973 and I had a Hallicrafters Safari
rig.
Beauty of that rig was built in
On Thu,9/11/2014 1:24 PM, Guy Olinger K2AV wrote:
In Jim's second linked PDF, he makes reference to W6GJB's (Glen)
ground as being very poor, presumably because these measurements show
so much more loss than "average" ground in the model.
I said the ground was very poor because it is mountaino
In Jim's second linked PDF, he makes reference to W6GJB's (Glen) ground as
being very poor, presumably because these measurements show so much more
loss than "average" ground in the model. The question is what do you have
to do to get the model to hand you 13.5 dB differentiation with those same
ch
Wes,
I am in Arizona and am using an N6BT Bravo-5a vertical and it works well. I
have worked over 1500 stations since installing the antenna with about 30% of
these being DX in Asia, Latin America and Europe. Could I do more DX with a
three element beam at 60+ feet? Probably, but since I live
But you're in Florida, I wonder how this would work out in the desert
of Southern AZ?
They would probably work better to Asia and Oceania from the desert of
Arizona than they work from the sandbar of Florida.
73,
... Joe, W4TV
On 2014-09-11 3:08 PM, Wes (N7WS) wrote:
Great job!
But yo
Great job!
But you're in Florida, I wonder how this would work out in the desert of
Southern AZ?
Wes N7WS
On 9/11/2014 8:56 AM, Joe Subich, W4TV wrote:
I need to agree with Jim and others in support of the verticals.
I've been #2 in the world the last two years in the 100W/simple
antennas
On Thu,9/11/2014 6:50 AM, Hisashi T Fujinaka wrote:
I use a AV-640 and I would suggest it over NO ANTENNA any day. And it
fits on a city lot without too many complaints
Yes, and that's something that blanket criticisms of antenna choices
fail to consider. On his tiny Evanston, IL city lot, my
I need to agree with Jim and others in support of the verticals.
I've been #2 in the world the last two years in the 100W/simple
antennas (verticals, dipoles) class of CQ DX Marathon. My antennas
are variously an 80/40 trap inverted V at 40', an R5 or an N6BT
Q51 (bandswitched dipole for 20-10)
I have to jump in here and give some support to my friend Bill Levy.
Years ago, in my earlier years of amateur radio I could not afford a
beam or rotator, so I delved in the antenna section of the handbook and
came up with an array of three phased verticals on 20M. This was during
the time of
On Thu, 11 Sep 2014, Barry wrote:
Bill Levy wrote
I had no trouble at all keeping in touch with my family using an early R5
vertical in 5H3 land when I was working there.
Bill N2WL
ex 5H3WL, 5Z4PI and VQ9WL
Having those callsigns gave you an extra 20 db gain. I've tried a few
verticals over
Bill Levy wrote
> I had no trouble at all keeping in touch with my family using an early R5
> vertical in 5H3 land when I was working there.
>
> Bill N2WL
> ex 5H3WL, 5Z4PI and VQ9WL
Having those callsigns gave you an extra 20 db gain. I've tried a few
verticals over the years and found them to
Bill, N2WL said:
I had no trouble at all keeping in touch with my family using an early R5
vertical in 5H3 land when I was working there.
My XYL had my Log Periodic on a 75 tower and I had the R5 vertical with a
Metrum 500 watt amp, 12 volt battery and an Icom 735 in those days.
When in Iceland with the Navy 30 years ago, I found the Butternut HF6V very
handy and effective. Big radial field with it.
There were no trees at all, and the constantly windy location would have
made short work of a tower.
I guyed it in measured 5 directions with guys that would let the tie-poin
I had no trouble at all keeping in touch with my family using an early R5
vertical in 5H3 land when I was working there.
My XYL had my Log Periodic on a 75 tower and I had the R5 vertical with a
Metrum 500 watt amp, 12 volt battery and an Icom 735 in those days.
I would not ever consider the verti
Bruce Bowman wrote:
This antenna, and I'm confident any 1/4 wave vertical, is very
sensitive to grounding. I've had to mount mine on the roof, and the
vertical doesn't like being mounted up there (13' up in our case with
the radials are layed out on our flat roof). I was warned by Fluid
Motion (
Don,
You are quite right about how easy it is to put up a Half Square, and it is
quite a forgiving antenna as far as dimensions are concerned, although
symmetry seems to be important. When they were up I fed each of my 40m Half
Squares at its corner using the outside braid of the feeder as one
up because of spam and only respond to phone
calls.
Bruce NM5B
Santa Fe, NM
- Original Message -
From: "John Wiener" <[EMAIL PROTECTED]>
To: "Elecraft email"
Sent: Wednesday, June 14, 2006 6:02 PM
Subject: [Elecraft] VERTICALS
>
> Maybe I missed it
Geoff,
A half square antenna is also a phased pair of 'upside-down' verticals -
easy to get up if you have 2 supports just a bit more than 1/4 wave high and
a bit more than a half wavlength apart. Feed at the upper corner directly
with coax or with a parallel resonant tank at the lower end of the
Ron AC7AC wrote:
There are two issues with ground-mounted verticals - either one that is
actually 1/4 wave long or one that uses traps to 'disconnect' the unneeded
length on the higher bands.
1) On the higher bands, the active portion of the antenna is that part
closest to the ground. So, on th
John AB8WH wrote:
Maybe I missed it, but I didn't see anyone mention SteppIR, though I
seem to remember a mention of it earlier.
I do not have one, but I've seen articles showing one masquerading as
a flag pole
Seems many of us end up retiring
in CCR environments. Who can argue with a
I have a SteppIR Big Vert [10-40 meters] and it works great. Mine is
"hidden" in some shrubs and a small tree on back of my small city lot. I
use it on 40 and 30 and love it.
73, Mark N7MQ
>
> Maybe I missed it, but I didn't see anyone mention SteppIR, though I
> seem to remember a mention of i
Maybe I missed it, but I didn't see anyone mention SteppIR, though I
seem to remember a mention of it earlier.
I do not have one, but I've seen articles showing one masquerading as
a flag pole.
As many know, the SteppIR has a metal "tape" element that is metered
out from the base within
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