[Amps] Input relay for QSK amp

[Larry Benko]

Victor,

I have made a lot of RF measurements on small relays at power levels up 
to 400w.  I have also measured operate and release times.

http://www.w0qe.com/Technical_Topics/small_signal_relays_at_rf.html
http://www.w0qe.com/Technical_Topics/relay_operate-release_tester.html

73,
Larry, W0QE

On 12/4/2018 3:21 AM, Victor Rosenthal 4X6GP wrote:
> 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.