On Wed, Oct 4, 2017 at 8:36 AM, Jim Thomson <jim.thom@telus.net> wrote:
>
> ## What is the life expectancy of a gigavac, or kilovac or jennings
> vac relay, when used in QSK mode ?? I heard it was something like
> 10-12 years, with main focus on CW qsk contesting. I may well be wrong.
> Years ago, alpha switched from jennings to kilovac..since the kilovac had
> more robust internals.
> The Gigavac GH-1 is even better..and typ hi pot tests to 7.5 kv...right
> outa the box.
>
I figured out the life of a vacuum relay (RJ1, HC1, GH1, all rated for 2
million cycles) in QSK contesting in CQing and also S&P. When running
(holding a freq and calling CQ) you get about 20,000 QSOs for the rated 2
million cycles, in S&P it's about 33,000 Qs, using my call as an example,
with the CQWW contest exchange.
Glenn AE0Q
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