4-400 tube will work in an Al82. No problem. They will have less gain and
less output but you’ll get power. You’ll do better if you use less bias. Use
it in SSB mode to up the idle current. There “may” be an input matching issue
but it shouldn’t be really bad.
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On Tuesday, January 26, 2021, 3:35 PM, Robert W5AJ <woodr90@gmail.com> wrote:
Have Ameritron AL82 amp, No Tubes
Have extra Eimac 4-400 tubes
Looked at some amp's schematics for 4-400 and appears these would work in
AL82
Have fired up filaments in AL82 (no HV)
Any one tried this or have go/no go thoughts?
73 W5AJ
Robert
Midland, Texas
http://pages.suddenlink.net/w5aj/
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