[TowerTalk] Relay Specs - Coax switch

[Jim Lux]

What impedance is your system?

2000Wrms (just to give a bit of margin) into 50 ohms is about 316Vrms, call
it 450V peak.
2:1 voltage margin is typical as a design requirement.



However, if you, for instance, happened to have a quarter wavelength of coax
from amp to switch, and left it open at the switch end, the voltage could be
just a bit higher(!)  (although, the amp will be looking into a short, so it
probably won't develop full output power, either)

----- Original Message -----
From: "Keith Dutson" <kjdutson at earthlink.net>
To: <TowerTalk at contesting.com>
Sent: Thursday, March 31, 2005 1:19 PM
Subject: [TowerTalk] Relay Specs - Coax switch


> I am home brewing a coax switch for the shack.  I want it to handle 1500
> watts of power, but not to "hot" switch.  I am looking at PCB relays and
> found many that handle 10 amps, but only a few that specify a high
> dielectric voltage.  What kind of voltage should be expected out of a
> legal-limit amplifier such as an Alpha or Ameritron?  TIA
>
> Keith NM5G
>
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