RE: [amsat-bb] Antennas

["Howard Long" <howard@xxxxxxxxxxxxxx>]

Hello Jon

> I'm looking for a smaller antenna system.  I currently have 9ele long yagi
> on 2m
> 21ele long yagi on 70cms both are linear polarized so I figure if I go
> circular polarized
> I can maybe half the length of the antennas.

I use the WIMO X-Quad 2m & 70cm pair which have boom lengths of only 1.5 and
1.3m. I'd take the claimed gain specs with a pinch of salt (12.6 & 14.9 dBi)
but you can work all the current birds with them. Implementing polarisation
switching helps quite a bit too.

I've had several recent reports (and some first hand experience) of the 70cm
X-Quads not tuning in well. There must've been some recent design change
which leads to this problem. This can be resolved by bending back the first
director but it seems a lot easier said than done.

Anyway, I've had a lot of success with mine. Makes for a compact
installation.

http://www.wimo.com/s9_e.htm
http://www.g6lvb.com/g6lvb_shack_spring_2002.htm

73 Howard G6LVB

----
Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org