Some Henrys have the filaments in series, but if one tube is not lit,
that isn't the case with yours! Anyway, you can pull out the dead one
and it should more or less behave in exactly the same way as it is now,
except the plate tuning will be off a little due to the reduction in
output capacity with only one tube.
73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/
On 27/06/2019 18:46, Ted Rachwal wrote:
All of a sudden I have a very high swr between the rig and amp...3:1....
I notice one of the 3500Z tubes is not lit. I'm wondering if I can pull
the unlit 3-500Z and try the amp to see if the issue is the tube or some
other part. I have pulled a suspect 572b and 811 in the Ameritron
series of amp and all was ok but wonder if the remaining 3-500Z would be
damaged if I tried this trick? Anyone have a thought here?
73,
Ted K8AQM
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