On Wed, 07 May 2008 01:29:18 -0500, No Spam wrote:

I'm trying to come up with some ideas for multi-op field day station
isolation. Main problem will be front end desens between Voice and CW
portion of the same band. Main concern is on 20M

I'm thinking simple stub filters. Though they are wide, I would think
that there would be a few DB of isolation 100Khz away. Perhaps several
in parallel to narrow it up a bit.

Would a simple LC resonant circuit with perhaps 20-30Khz of BW work?

Any thing else I should be considering?

I've used stubs to clear things up. I've been surprised how well they
work. Just remember what band you're on.

Another possibility is a beverage antenna. Get that as far from the
transmitting antennas as you can - though keep in mind the real estate
limitations in Field day

--
-73 de Mike N3LI -