> I am planing to construct an antenna switch for a Multi-2
> antenna will be shared with two stations. Using two single
> open vacuum relays on series. The center connection going
to the antenna.
> The open ends of each vacuum relay going to a station.
As long as you use a single-armature relay and as long as
you make sure no failure in voltage or switching can dump
one rig into another it will be OK! NEVER use a reed style
vacuum relay. NEVER.
> At the 1500 watt power level will the single open vacuum
> enough isolation?
Sure. If it is a typical vacuum relay. I use them all the
time even in 25 kW and higher systems.
> How much isolation can I expect?
60 dB or more if you do a good layout.
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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