[amsat-bb] Re: (no subject)
domenico.i8cvs at tin.it
Sat Mar 26 15:12:50 PDT 2011
Hi Howard, VE4ISP
In a separate email I have sent to you the zipped files of the first and
second part of my article:
"Switching Four Polarizations on a 70 cm Crossed Yagi" that was
published into the AMSAT Journal March/April 2007 and May/June
The article is for a 70 cm crossed yagi with the elements spaced 1/4
wavelenght over the boom but you can scale the lenght of the coax
lines and delay lines also for 2 meters.
You will get four polarizations, H-V-RHCP and LHCP good for
Tropo and Satellite use.
If someone is interested in the above articles please let me know
----- Original Message -----
From: "Howard Kowall" <hkowall at shaw.ca>
To: "AMSAT BB" <amsat-bb at amsat.org>
Sent: Saturday, March 26, 2011 7:50 PM
Subject: [amsat-bb] (no subject)
> Hello All
> Before I start I am not cheap just frugal
> Want to make my antenna polarization selectable with relays LHCP or RHCP
> For both UHF and VHF I really don't want to buy a commercial ones
> Does anyone know what type or where I can purchase theses types of relays
> I would like to have them rated for aprox 50w for UHF and VHF
> 12vdc coil would be nice,I plan on energizing them with a separate power
> Thanks to all who read and respond to this
> Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
More information about the AMSAT-BB