Originally Posted by TatumAH

This is what my father used in the sixties, Hallicrafter Loudenboomer Mk2. You can see the glowing massive pentode. He was a big believer in moar power! There was no need to heat the radio shack! You wouldn't survive a shock from the power supply, unlike the Model T spark coils that were popular for pranks in the 60's!

TAT

Assuming it's transmitting into a dummy load, because that was an incredibly low SWR reading.
Pentode almost reminds me of an Eimac tube.

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