[Top] [All Lists]

[TowerTalk] Quad Element Tuning

To: <>
Subject: [TowerTalk] Quad Element Tuning
From: (Maurizio Panicara)
Date: Sun, 9 Sep 2001 10:23:03 +0200
I like plain and reliable systems, expecially with antennas.
If I where to install a single 5 bands antenna covering from 10 to 20
meters, I'd probably go for a log periodic or a trapped yagi.

Mauri I4JMY

>  I can see where a 3 element 5 band quad could get real sticky and will
> it when I get time. These types of problems have been solved with wider
> spacing and that is worth a try.  Variable Xc's can detune a parasite when
> certain bands are used.  My plan to use variable Xc's in each reflector
> ganged together driven by a selsyn on the mast has 2 ways of doing it.
> the settings are found, adjust the set screws so the Xc's are all set for
> gain for F/B. Or have all off band Xc's at random settings (within 180
> degrees) and detuned say on the low sides. On each band it is then
> to set the selsyn to a certain degree setting on each band.  The rest are
> way off. There is a solution for just about any problem except crooked
> politicians if you are creative enough. This should isolate the reflectors
> even more. k7gco

List Sponsored by AN Wireless:  AN Wireless handles Rohn tower systems,
Trylon Titan towers, coax, hardline and more. Also check out our self
supporting towers up to 96 feet for under $1500!!

FAQ on WWW:     
Administrative requests:

<Prev in Thread] Current Thread [Next in Thread>