End of thread. (and related G5RV threads under similar subject lines..)
We are now at 27 G5RV posts in less than 24 hours, several time the limit for OT
posts. In the interest of relieving email overload for Elecraft focused readers
and others, please take further discussion off list.
(Pleas
The UK does not have a monopoly on such folk, Alan. Just ask Tom,
K5RC/W7RN. 10 acres on a hilltop in an extremely rural area ... 3 1/2
years of legal battles with distant neighbors and the County government.
Tom prevailed, finally, and I operate his station remotely from time
to time.
Our
On 8/4/2016 4:00 PM, Alan Bloom wrote:
It's true that tuner losses are the manufacturers' dirty little
secret. Loss is rarely specified, partly because it can be pretty bad,
and partly because it is hard to measure, but also because it is not
constant - it depends on the particular impedance b
When I started in the hobby, I worked 150 countries before I found out a G5RV
didn't work. Took it down and haven't used it since.
Sent from my iPhone
> On Aug 5, 2016, at 11:21 AM, William Lagerberg wrote:
>
> And you now dear list users, i have a G5RV and i really love it it works
> allway
The problem with every one of these antenna discussions is that some of
us are looking for a reasonable set of compromises, and that discussion
tends to get lost in the "this antenna ain't perfect!" discussion that
invariably results.
When I bought this house, I knew the lot size, and I saw th
And you now dear list users, i have a G5RV and i really love it it works
allways, and give’s me good results :-))
Just have to say that.
Regards William PE1BSB
> On 05 Aug 2016, at 16:58, Phil Wheeler wrote:
>
> Alas, the poor G5RV. Now that its been flogged to death, maybe we need a new
Alas, the poor G5RV. Now that its been flogged to
death, maybe we need a new target -- say the Windom?
Phil W7OX
On 8/4/16 10:22 PM, Wes Stewart wrote:
The tuner loss also depends on how it is
adjusted. For example the very popular high-pass
Tee with three adjustable elements has an
infinit
Alan,
I do understand the situation for those with limited antenna space and
restrictions. What I do not understand is the "magical" qualities that
have been attributed to many antennas. They are compromise antennas,
and I want everyone to understand that they are a compromise.
If a ham wa
Original Message-
From: Don Wilhelm
Sent: Friday, August 05, 2016 12:41 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] OT:. G5RV's
Wes and all,
Yes, the G5RV, the Off-Center-Fed antennas (Carolina Windom for one
example) and the 43 foot vertical have become "magical" an
The tuner loss also depends on how it is adjusted. For example the very popular
high-pass Tee with three adjustable elements has an infinite number of possible
combinations that will effect a match on the same load Z. One of them is the
lowest loss solution, all of the others aren't.
As I sa
I guess a little discussion of semantics is in order. Yes, EZNEC shows for
example, that a 12 AWG wire, 102' long and say 50' above avg ground shows an
impedance of ~98 +j0 at 14.32 MHz, so it is resonant in the 20-meter band,
because the reactance is zero, and it could be called a "resonant di
I know handbook descriptions have declared this for years. They're simply
wrong. The folded part is a transmission line, it doesn't radiate and it has an
impedance different from the antenna. Why not just add a hundred feet or so of
transmission line to a 10' dipole and call it a 160 antenna?
Bill,
That is correct, but the currents on the 33 feet feedline should be
balanced and of opposite polarity - so they cancel. The current at the
radiator center will be less than that of a full size 80 meter radiator,
so it will be less efficient than a full size 80 meter dipole with the
cur
Fred,
Dirt was young when I was first licensed too.
I do remember those days of link coils that you slowly advanced into the
PA inductor and re-dipped the plate until the current draw was correct
for the power level that you wanted to operate. Those were the days of
plug-in coils for each ban
Jim and all:
Interesting comments on the G5RV (I've never built one but have a
local friend that uses one).
For years I used wire dipoles on HF bands: I made a 80/40m trap
dipole, 80/40m dipole with removable clip at 40m length which we call
the "Iditarod Special" as it was simple to use at
My EFHW [granted, it is technically only one half-wave on 80 m] got a
pretty good write up in QST not long ago, after I had it installed, and
he elevated the far end into a tree. While his review was pretty
qualitative [:-(] which has become more common in QST these days, he
still got the same
Let's see, 102 + 33 = 135. Isn't that pretty close to the length of an 80
Meter Dipole? The G5RV looks like two back-to-back inverted "L" antennas. The
twin lead is not feed line but part of the radiator.
Sent from my iPhone
...nr4c. bill
> On Aug 4, 2016, at 4:41 PM, Wes Stewart wrote:
>
On Thu,8/4/2016 4:31 PM, Walter Underwood wrote:
There is one efficient way to broaden an antenna’s frequency range—lower the Q.
That is usually done with large-diameter elements. You can cover all of the 80
meter band with reasonable SWR using a “cage dipole”. That is what they do at
W1AW. At
What happens if the antenna is well above ground, away from any fences?
On 8/4/2016 3:55 PM, Guy Olinger K2AV wrote:
If we are just dodging the HOA, vs creating a remote site, or not operating
at all, what you describe seems quite reasonable. One half wave on 80, two
on 40, three on 30m, four on
Wes and all,
Yes, the G5RV, the Off-Center-Fed antennas (Carolina Windom for one
example) and the 43 foot vertical have become "magical" antennas, and I
am not certain why.
My best guess is that they are "salvation" for hams who want to operate
on multiple bands with one antenna, and they ca
John,
I think this is a reasonable conclusion. Early on I used a G5RV and it was
invaluable reference for my later antenna building experience. I went to build
doublets in the same space and I still keep an 80m doublet in the air.
Recently I have gotten into building no compromise rotatable d
There is one efficient way to broaden an antenna’s frequency range—lower the Q.
That is usually done with large-diameter elements. You can cover all of the 80
meter band with reasonable SWR using a “cage dipole”. That is what they do at
W1AW. At VHF/UHF, you may see bowtie antennas, which are al
Hi Fred,
Loss *anywhere* would broaden the antenna. Famously the B&W folded dipole,
fed at the center of one wire, and terminated with an RF resistor at the
center of the other, has for decades been serving commercial installations
with widely separated operating frequencies not connected by any f
When Varney created his G5RV in 1946 a great many Hams still operated on but
one Ham band and parallel (open wire) transmission lines were still common.
The 102-foot G5RV is a 1-1/2 wave center fed doublet at 14.15 MHz. According
to one of my favorite wire antenna writers, (John Heys, G3BDQ "Practi
Ummm ... my HP48GX says 102' is very very close to 3 half-waves at 14
MHz which sounds sort of resonant-ish. Maybe a little known bug in my
calculator?
On a similar path, I decided to try out the 80-10 EFHW from MyAntennas
as an HOA Stealth antenna strung along the top of a 6' fence. It's 13
Wes..
Over the years, immediately after a change in QTH, I have used the G5RV
as an interim antenna. My personal experience is that it is a reasonable
performer, as compared to a single band, resonant half-wave dipole, at
the same height, fed by the same coax/length.
While I certainly do
On 8/4/2016 4:41 PM, Wes Stewart wrote:
> First, a 102' length is not resonant on 20-meters, so in common
> jargon, it's *not* a 20-meter antenna, any more than any other random
> length would be.
*Not* true ... 102' is three half-waves on 20 meters:
984/2 * (3 -.05) / 14.15 = 102.6'
Check t
> It's a pity that too many newcomers, as well as many oldsters, are
> enamored by this piece of wire.
The G4RV is definitely a compromise antenna. However its advantage is
that is has low-enough SWR to be easily matched by most tuners on a
number of bands.
> ... the horrific losses that cou
In my 1999 paper, /"Balanced Transmission Line in Current Amateur Practice"/
(http://k6mhe.com/n7ws/Ladder_Line.pdf), published in the /ARRL Antenna
Compendium, Volume 6, /pp 174-178, I have this statement: "A popular multiband
wire antenna is the so-called G5RV. This antenna is rarely used as w
As usual, Jim is correct ...
I have Lou Varney's original article. The G5RV was designed as a 20M
--ONLY-- antenna. It's now achieved some kind of cult ... read voodoo ...
status. (;-)
If one has an antenna that is partially fed with balanced line that's then
directly (!) spliced to a specific
Thank you Eric.
Here is an antenna reflector link anten...@mailman.qth.net.
73,
Tom
Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA Lifetime Member
On Thu, 14 Feb 2013 14:40:51 -0800, "Eric Swartz - WA6HHQ, Elecraft"
wrote:
>Let's wrap up the G5RV OT discussion by the end of today in th
My 2 cents,
As a relatively new ham lacking any real world skills with regards to making
antenna's, the G5RV has worked for me. I am very limited in time, I am not
normally home more than 10 days a month so my spare time is limited. But I
still have some time to enjoy the hobby and personally I
. Have you ever been he a QSO and turned the power down from a 100 watts to 1
watt and were still Q5?
> As a matter of fact, YES! emphatically, most of the time actually... and even
> more of the time I start at 5 and then turn it downon 40-30-20
> especially, and on 160 and 80, I find that
A 66ft off-centre-fed dipole works better than the 105ft G5RV worked on
multiple bands.
Remember, however, that when Louis Varney designed his antenna (aerial in
those days, probably) we all had valve (tube) transmitters which could cope
with the wide variation in impedance. My only matching
I have always been amused by the antenna adverts that say things like "I
worked 100 countries in 6 hours" or some such nonsense.
Those type ads never give radiation patterns or any other meaningful
data that can be used to compare with other antennas.
That does not mean that the ads were mis-le
Let's wrap up the G5RV OT discussion by the end of today in the interest
of keeping list volume under control for others.
73,
Eric
List modulator
elecraft.com
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/ele
Yes sure...
Kurt N. Sterba who once wrote an article in World Radio about how he connected
two shopping carts to the end of his coax and worked the world.
So working this or that is very unimpressive. Have you ever been he a QSO and
turned the power down from a 100 watts to 1 watt and were still
There is a reason that the G5RV is a good beginner's first antenna, IMO. It is
relatively easy to install.
Of course the same size antenna performs better as a doublet fed with balanced
line, but I had a lot of trouble with balanced line when I was starting out. I
didn't know enough to get us
Wednesday, February 13, 2013 5:06 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] OT: G5RV's and variants
It's already been pointed out that the original article by G5RV indicated that
the antenna was for 20M only.
I have the original article in my files.
I've always wondered wh
n as low as 40 meters.
73, Ron AC7AC
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of k3...@comcast.net
Sent: Wednesday, February 13, 2013 5:37 PM
To: Ken G Kopp
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] OT: G5RV'
, February 13, 2013 5:37 PM
To: Ken G Kopp
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] OT: G5RV's and variants
>From my experience, hams misunderstand antennas more than anything else
they have as a part of their station. What I've been able to discover for
the popularity
e room, I would suggest the center fed dipole
with low loss feeds into a good tuner. And, oh yes, get it up as high as
possible.
73,
Barry
K3NDM
- Original Message -
From: "Ken G Kopp"
To: elecraft@mailman.qth.net
Sent: Wednesday, February 13, 2013 6:06:25 PM
Subject: [
OK, I amend my post to say 130 foot doublet.
Kim - K7IM
-Original Message-
From: Ron D'Eau Claire [mailto:r...@cobi.biz]
Sent: Friday, March 09, 2012 8:09 PM
To: 'Ken G Kopp'; d...@w3fpr.com
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] OT: G5RV's antenna
Th
...@gmail.com]
Sent: Friday, March 09, 2012 6:54 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] OT: G5RV's antenna
I have Varney's (G5RV) original article. The antenna was designed for -only-
20M . Since then it's taken on the proverbial "life of it's own" and become
th.net] On Behalf Of Ken G Kopp
Sent: Friday, March 09, 2012 7:34 PM
To: d...@w3fpr.com
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] OT: G5RV's antenna
Yes Don, I knew when I used the term "classic Zepp" that I was taking a bit
of liberty with the term. The original Zepp wa
Yes Don, I knew when I used the term "classic Zepp" that I was taking
a bit of liberty with the term. The original Zepp was indeed end-fed from
the cabin of a Zepplin. I've often wondered how long the feeder actually
was. They may have been closer to a simple end-fed wire.
I'd also noted the co
Ken,
I will agree with all until I got to the end of your post - "classic zepp"
The original (and classic) Zepp antenna was a 1/2 wave wire fed through
a 1/4 wave transmission line connected to the end that was trailed
behind lighter-than-air aircraft (Zepplin). If you look at the J-pole,
and
I have Varney's (G5RV) original article. The antenna was designed
for -only- 20M . Since then it's taken on the proverbial "life of it's
own" and become somewhat of a "cult" antenna, as is the case with
the "Carolina Windom".
Why would one start with a perfectly good balanced-line fed Zepp,
cobb
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