Date: Fri, 26 Oct 2012 06:53:05 -1000
From: "Roland AH6RR" <Toesonnose@hawaii.rr.com>
To: <Amps@contesting.com>
Subject: [Amps] Kilovac H-18 8KV DPDT Relay question.
I am building a 6Meter amp using 2 4cx250b tubes and I picked up this relay
a Kilovac H-18 8KV DPDT. I was looking at the manufactures website and the
data sheet and it says that it is good for 2 amps at 32MHZ but it has no
rating above 32MHZ should it be OK at 50MHZ?
Roland Spoon AH6RR
Contest Call KH7B
ARRL Section Traffic Manager
### 2A is good for 2x2 x 50 ohms = 200W CCS @ 32 mhz....and no doubt
even less at 50 mhz.
## use a gigavac GH-1 instead. You can get em in both 12 vdc and also 26.5
vdc.
A buddy uses one of em on the output of his hb 2 x GS35B 6m amp. Handles
5 kw pep out just fine on ssb/cw. Handles a dead cxr just fine too. Super
fast.
## If your proposed amp puts out 500w pep ssb/cw, your relay will probably
work
just fine, since the average output will be real low, like 100w average .
Try it anyway.
If it bites the dust, replace it with a GH-1. The GH-1 is just a SPDT relay
though.
Jim VE7RF
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