>Rich Measures wrote:
>>
>> Does anyone on [AMPS] know of a case where a CW person managed to wear
>> out the contacts on a Jennings RJ-1A vacuum-relay?
>> - thanks.
>>
>> Rich...
>.........
>Hi Rich, not sure what the exact problem of mine was but I lost the
>relay
>(RJ1A) during a cw contest. I was using an Alpha 78, which uses a
>reed relay ahead of the RJ1A.
? My guess is hotswitching did the damage instead of 2-million closures.
. As I recall, the 78 does not use enough potential to enable the RJ-1A
to close fast enough to beat modern transceivers. To effect a speedy
closure of a RJ-1A with a 26v-rated coil (L=0.3H), one needs 100v - 160v
open circuit, limited to 80mA,.. . This is an easy problem to correct
-- if you are not averse to soldering.
- cheers, Pete
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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