[amsat-bb] Re: Crossbooms ... my pennyworth.

richard@g3rwl.demon.co.uk richard at g3rwl.demon.co.uk
Wed Jan 10 08:14:11 PST 2007

Gang, Howard

>> Howard mentioned the much-documented advantages of polarization switching
>> for LEO satellite work. In this same context, is it worth the additional
>> work to include the remote logic required for V and H polarizations along
>> with RHCP and LHCP? 

> It's a nice to have, but not as much as being able to switch R/LHCP. I
> currently use the WIMO polarisation switches and they happen to have all
> four polarisations built in.

There used to be a 4-polarisation switcher in old RSGB VHF handbooks but it would only be of use if you plan a lot of terrestrial operations as well as space.

A simple RHCP/LHCP switcher using a relay and lengths of coax is in the archives at ftp://ftp.amsat.org/amsat/misc/ant_swit.gif

Richard G3RWL

More information about the AMSAT-BB mailing list