[AMPS] RJ-1 relay

[Martin Gary]

I looked at a couple of web sites selling those RJ-1 relays and couldn't
find a good explanation of how they work. How many contacts do they have? I
want to replace the open frame relay in my old Henry 2k-3. It is HUGE. The
area were there is no shielding is about 3 inches long. This has little
affect on the lower bands, but the higher bands seem to be affected. I have
a 2:1 swr on 10 meters with the amp off into a dummy load. After looking
carefully at the relay contacts (and cleaning them) I think that the length
of the relay contacts is the culprit. It probably causes a loss of
efficiency there also. Anyway, the question is: Do I need two relays, one
for input and one for output or does the RJ-1 have enough contacts to handle
both. If I need two is it ok to use a small open frame relay on the input
and the vacuum relay on the output?

I have two NCL-2000's that I would like to "modernize" also. Any advice
would be greatly appreciated.

Martin - N3HRT



> When I was QSKing my Drake L-7, I measured the closure time of several
>RJ-1's I had on hand. Although the relays were rated at 8ms closure
>time, all of mine actuated in abt 2ms with 24 volts on the coil.
>
> I tried full break-in but didn't like all the noise popping in between
>code characters. I set the VOX delay to where it stays on between dots
>but opens between words. Virtually as good as full break-in and saves
>a lot of wear and tear on the relays!
>
>73, Roger
>
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