06-18-2025, 08:02 AM
I also checked all the radio tubes on my Hickok 530 tube tester. The 5Z3 kenotron turned out to be faulty, all the other radio tubes are good.
True, attentive readers will immediately see my mistake - when I took the photo, I forgot to switch the tester settings to the 5Z3 measurement mode and the settings remained on the measurement of the previous 6f5 pentode radio tube.
The problem with the 5Z3 box turned out to be more complicated than I thought - I don't have it. But there are many Soviet analogues of the 5Z3, but with octal sockets. So I had to replace the 4-pin socket with an octal one.
It was ...
It became ...
I also filmed the process of checking the radio tubes
[Video: https://www.youtube.com/watch?v=bZIAcVzJ3TM&t=12s]
True, attentive readers will immediately see my mistake - when I took the photo, I forgot to switch the tester settings to the 5Z3 measurement mode and the settings remained on the measurement of the previous 6f5 pentode radio tube.
The problem with the 5Z3 box turned out to be more complicated than I thought - I don't have it. But there are many Soviet analogues of the 5Z3, but with octal sockets. So I had to replace the 4-pin socket with an octal one.
It was ...
It became ...
I also filmed the process of checking the radio tubes
[Video: https://www.youtube.com/watch?v=bZIAcVzJ3TM&t=12s]
Old tube radios and gramophones museum TV channel
https://www.youtube.com/user/RadioSvit
Sincerely Peter
З повагою Петро
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