>
>Hi Mike...
>
>Recent years' production of the Kilovac HC-1 vacuum relay (looks almost
>identical to Jennings RJ1-A and installs identically) has substantially
>more robust innards with far better bounce characteristics. That's why
>ALPHA/POWER uses them in the new ALPHA 99 and former '91B. Price is about
>the same.
>
>In any case, vac relays normally should last for several years' hard QSK
>use in the '78 unless something in the timing/sequencing circuitry
>(including related off-board rf detectors) is amiss. Might be worth
>checking out.
>
>BTW the '78 has a "speed-up" or "hot-shot" circuit that should close the
>vac relay within ~2 msec.
? To fully close a RJ-1A or HC-1 (26v) in 2mS, my test showed that it
takes around 85, current-limited, open-circuit volts. . What is the
source voltage for the ant. relay coil in the Alpha 78, Dick,?
thanks.
- Rich..., 805.386.3734, www.vcnet.com/measures.
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