[Milsurplus] Testing 1625s
Bry Carling
bcarling at cfl.rr.com
Fri Oct 7 05:31:31 EDT 2011
Interesting - when you say that they got "taken out" - was that an arc-over that destroyed the
tube(s) ?
73, de AF4K, Bry
On 6 Oct 2011 at 16:38, DeWitt Clay wrote:
> I have found a Heathkit DX-100 transmitter modulator section a good
> place
> to test a box of unknown 1625 tubes. Various problems will show up
> quickly
> in tubes that can't stand high voltage in the range of 700 volts. I
> also
> made an adaptor to test 1625 and 837 tubes in Collins 32V
> transmitters.
> Recommend DX-100s require a (.01uF) cap across the mod xfmr
> secondary or
> surges will take out one of the 1625s.
> 73, DeWitt N4QNX
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