[Amps] Diagnosing relay problem

Steve Thompson g8gsq72 at gmail.com
Sun Jan 8 11:10:23 EST 2017


If there's enough cable length between the relays in the rx path, 
a TDR might do it.

I feel sure there should be a way using a capacitance meter, but I 
haven't stopped to figure out how yet.

Steve

> I have recently been suffering from intermittent attenuation of RX signals
> through my amplifier, which has a vacuum relay (Jennings RJ1-A) in the output
> and a HG d'Italia relay from max gain (see here:
> https://www.mgs4u.com/RF-Microwave/RFrelays_misc.htm) in the input. The problem
> is that I would like to determine which relay is responsible before taking it
> apart!
> I can't think of a way, and am considering replacing both of them. Does anyone
> have an idea?
> Also, has anyone experience with the HG d'Italia relays? I wonder if this was
> such a good choice. It is fast enough, but I wonder about its lifespan.
>
> Vic 4X6GP



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