The antenna meter (Vector analyzer thingy) that SteppIR is selling, the
Sark-110, can graphically display 4 different resonances at the same
time which would allow you to observe the effect tuning one band is
having on three others. This is the way I think I remember it.
So, that should make tuning multi-band antennas, including fan dipoles,
a little (maybe a lot) easier.
Perhaps an early adopter of the Sark-110 could ring in on this topic and
give us the real deal.
Patrick NJ5G
On 4/26/2015 7:05 AM, Bry Carling AF4K wrote:
Also - importantly.... the G5RV is 40 feet shorter which is a MAJOR
consideration with a
postage stamp lot like mine!
And yes, TRY trimming lengths on that 4 conductor rotator cable! Not too easy.
I don't want a 2 or 3 band antenna nd I have no high point to make it an
inverted vee really.
Fan dipoles may be in expensive to build, but they are far from being simple to
adjust.
YMMV
On 26 Apr 2015 at 7:34, WA8JXM wrote:
You say fan dipoles are heavy and difficult to get to behave. It all
depends. You are right if done as a true dipole and for all the bands.
I cannot envision a 160/80/60/40/30/20/17/15/12/10m fan dipole although
I do recall Hint & Kinks publishing a 5 band fan dipole using 4 wire
flat rotator cable for the conductors.
However tfan dipoles do well as a 2 or 3 band inverted vee, supported in
the center. I have a 160 and 80m fan inverted vee on the tower, and 15'
below it, a 40 and 30 m fan inverted vee, which also loads on 15m. The
30m is suspended from the 40m wire. However, the 160 and 80m vees go to
separate tie points.
I did, at one time have a 5 band fan dipole up in the air. You are
right, they can be challenging to adjust when you get that many bands
tied together.
But they are good solid performing antennas, simple and inexpensive to
build.
73, Ken WA8JXM
On 25/04/2015 23:27, Bry Carling wrote:
My experience has been entirely different. Fan dipoles are extremely heavy and
difficult to get to behave. A G5RV will take full legal power. It does not
mysteriously generate noise as claimed. Many people use them on all bands with
great success.
I'm not worried about supposed patterns. They just work.
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