Made me laugh. I guess Reg had other designs :)
Martin, HS0ZED
On 09/12/2018 23:44, CUTTER DAVID via Elecraft wrote:
Sorry, I said Reg, should have said Louis
David G3UNA
On 09 December 2018 at 16:30 CUTTER DAVID via Elecraft
wrote:
In addition, Reg was designing in the era of valve
I kinda like my 160M coax fed half wave dipole. I can get
something out of it on all bands with the K3 tuner, although 80M
is very marginal. I have a couple of FT8 QSOs with Quebec on 6M
using it, although the azimuth pattern looks like a porcupine.
However, for most purposes, my 8 band
I experimented with a G5RV. I did not have worth while results. A simple
dipole with a quality current balun easily outperformed it. I also tried
the "Mystery Antenna" - a joke. Measurements were down to a millimeter.
It was up for an hour then was scrapped. I did have "acceptable" results
From my experience, more folks should pay attention to the antenna and
balun work done by DJ0IP. They would likely have better performing
antennas. His work is proven on antennas and not text book or computer
models, but indeed he provides real world results.
73
Bob, K4TAX
On 12/9/2018
Sorry, I said Reg, should have said Louis
David G3UNA
> On 09 December 2018 at 16:30 CUTTER DAVID via Elecraft
> wrote:
>
>
> In addition, Reg was designing in the era of valve output transmitters with
> built-in pi-tank matching system, so, it was possible to match on different
> bands.
In addition, Reg was designing in the era of valve output transmitters with
built-in pi-tank matching system, so, it was possible to match on different
bands. I'm sure mine worked across 80 to 10m in those days. For 80 to 10m
these days I use a off-centre-fed dipole with hybrid
Here is a nice discussion (link below) on the G5RV ~ Tnx, Jaro OK1CJB
including current distribution and radiation plots for various bands
Regards, Jan K1ND
Don is of course correct in his reference to the antenna actually being an
"extended double zepp" using the dimensions in my example.
73 !
K0PP
On Sat, Dec 8, 2018, 15:15 Don Wilhelm Ken and all,
>
> More correctly if the terminology of hams is to be deemed correct, it is
> a "Double
Ken and all,
More correctly if the terminology of hams is to be deemed correct, it is
a "Double Extended Zepp". The radiator each side of center is 5/8
wavelength long (at 20 meters). The 32' 300 ohm ladder line is for
impedance transformation. It does provide some broadside gain on 20
As I've already stated … I have a copy of the original Varney
RSGB article that describes the G5RV and plainly states that
it's a 20M only antenna.
Remember, it requires an antenna tuner …
Start with a dipole …
Keep the "magic" 32' length of 300 ohm feedline.
Delete the 68' of coax.
What's
Back in those days most of my friends did not even own an swr meter, we
tuned up by dipping and loading and worked out the power input to the PA
to meet the regulations.
In later life LV preferred to speak of the ASTU Antenna System Matching
Unit. I prefer to use MU for the box in the
In an issue of Radcom published between 1999 and 2006, which I shall have to
find, IIRC there is some comment on the the G5RV with references. If I
remember correctly Captain Varney G5RV first published the design in the
1940s, could well have been in 1946, and the antenna was intended to be
In a message dated 5/17/07 1:53:57 PM Eastern Daylight Time,
[EMAIL PROTECTED] writes:
Jim, the original G5RV is a 1-1/2 wave 20 meter *only* antenna that offered
a good match for the coaxial line by using an open-wire matching section. As
you know, such matching sections are
I do hamfest and convention antenna talks and have
a large file of assorted antenna info. I believe I have
G5RV's article in a file, but it's at home in Montana
and I'm in Oregon.
My wife and I are hosts at a lighthouse on the coast
and will return home in a few weeks.vvIf you haven't
found
From what I can discover, Captain Varney, G5RV, published his antenna design
in England in 1946. I was referencing the comments made about it by John D
Heys, G3BDQ, in his book Practical Wire Antennas.
You are quite right! It seems like everyone who find an article by Captain
Varney thought
I -think- I have a copy of the original article, but I can't be
certain until I get back home to Monatna in a month.
I'm a magazine and Handbook collector ... have (almost) all
of QST, all of CQ, 73, HR, Hr Horizons, etc. Been gathering
for 56 years. (;-)
73! Ken Kopp - K0PP
[EMAIL
In a message dated 5/16/07 10:17:09 PM Eastern Daylight Time, [EMAIL PROTECTED]
writes:
I have G5RV's original article introducing the antenna.
He specifically states that it is a 20M antenna, and yet it's
now somehow become a do-all-bands wonder ... an almost
cult thing.
In all the G5RV
What many do is put up as much wire as possible, then
take the feedline down to a remote balanced tuner in a dog house,
then run coax or hardline to the shack.
That is the best setup for high power AM multi band work
I suspect.
Running AM, you have to derate everything like baluns and traps
to
@mailman.qth.net
Sent: Thursday, May 17, 2007 1:27 PM
Subject: RE: [Elecraft] OT - G5RV antenna baluns
What many do is put up as much wire as possible, then
take the feedline down to a remote balanced tuner in a dog house,
then run coax or hardline to the shack.
That is the best setup for high power AM
Jim, the original G5RV is a 1-1/2 wave 20 meter *only* antenna that offered
a good match for the coaxial line by using an open-wire matching section. As
you know, such matching sections are frequency-dependent, like any fixed
tuned matching network. The G5RV allowed the use of the newly-available
In a message dated 5/17/07 11:47:30 AM Eastern Daylight Time,
[EMAIL PROTECTED] writes:
The 5RV will only provide the correct match transformation at a specific
height and in a straight line. If the ends droop the impedances are
wrong and the match between the balanced line and the coax
K5KVH sums it up in his opening paragraph ...
I have G5RV's original article introducing the antenna.
He specifically states that it is a 20M antenna, and yet it's
now somehow become a do-all-bands wonder ... an almost
cult thing. The same thing happened with the single-wire fed
Windom years
Kopp
Sent: Wednesday, May 16, 2007 10:16 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] OT - G5RV antenna baluns
K5KVH sums it up in his opening paragraph ...
I have G5RV's original article introducing the antenna.
He specifically states that it is a 20M antenna, and yet it's
now
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