[Amps] Input relay for QSK amp

Victor Rosenthal 4X6GP k2vco.vic at gmail.com
Tue Dec 4 05:21:21 EST 2018


I'm trying to choose a relay to use as the input relay in a QSK amp.
I have been very satisfied with the Jennings RJ1-A as an output relay. 
The input relay in this circuit needs to be DPDT, or I'd just use two 
similar vacuum relays.

Here are my needs:

1. DPDT.
2. 12 or 24v coil.
3. Operate/release time, including bounce <= 4 ms. Faster is better.
4. Should carry 100w RF in 50 ohm system. Not expected to make/break 
live circuit.
5. Must have low resistance for low-level signals (receive path).
6. Must have long life >= (10 x 10**6 operations)
7. Must not be insanely expensive, and available from Mouser or RS.

I found this relay:
<https://www.mouser.co.il/datasheet/2/418/NG_SS_108-98005_L-1019204.pdf>
But maybe there's a better choice? I'm overwhelmed by the number and 
varieties of relays in the catalog.
-- 
73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/


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