Clayton,
FWIW I'm using a Diplexer on the 145 MHz before the pre-amp, this knocks out the 3rd harmonics. My WIMO crossed Yagis are 2m apart on a fiberglass boom, the SDR is not being overloaded at all.
TX: 100W LSB, TS-2000 RX: NetSDR + RFspace's own down-converter.
When it stops raining & 1 remember I'll take a photo.
The system is working very nicely on FO-29. Total North Americans worked in the last few days - just the one! There's a pass in 150 minutes which would be nice for working into New England and the frozen North :) .
Simon Brown G4ELI http://v2.sdr-radio.com
-----Original Message----- From: Clayton Coleman [mailto:kayakfishtx@gmail.com]
Steve, I have been looking at those same relays. My biggest concern has been protecting the SDR's & FUNcube Dongle from any RF transmissions.