[TowerTalk] Antenna switch isolation?

[jimlux]

Martin Sole wrote:
> How much isolation should I be aiming for in a remote relay switch box. I
> have some 30A rated relays that look as if they will handle a fair amount of
> power. I can see only about 40dB of isolation across the open contact. I
> don't need it to go above 30MHz and 2kW handling should be fine. Antenna
> connections will be all low impedance. So 1kw into the common port will give
> me about 10mW at the open port, enough?
>

maybe 100mW.... 30dBW - 40 = -10dBW = 20dBm = 100mW

Depends what's hooked up to it, whether +20dBm will have a bad effect.