• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Male plug for a noval socket

If I recall correctly there was a fire at the plant that made those and many others tube base and socket products. They did not replace the molds for some of the low demand obsolete products.

I would look for old (dead) tubes with the right base and separate them. If I recall correctly they were the larger base size more typical of an octal socket but with nine pins. Not the same as a more modern miniature nine pin socket.

Some relays also used the larger 9 pin socket. But those were rare.
 
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The ones I've seen all used the 9 pin noval type tube socket. The mating plug connector either had a screw on cap or pliant rubber-like cap that popped onto a groove in the base of the plug.

I think there were also 9 pin novar or magnoval types to the best of my recollection, but I did not see those in anything I can recollect working on.
 
The ones I've seen all used the 9 pin noval type tube socket. The mating plug connector either had a screw on cap or pliant rubber-like cap that popped onto a groove in the base of the plug.

I've only seen octal plugs, on my Dyna PAM-1 that plugged into my Dyna Stereo 70 back in the sixties.
There were black metal shells over the wire end.
 
Do you have a photo?
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