10 Jan
2007
10 Jan
'07
9:14 a.m.
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
73 Richard G3RWL