[TowerTalk] G5RV vs 40M dipole
Patrick Greenlee
patrick_g at windstream.net
Sun Apr 26 08:50:49 EDT 2015
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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