Amperex had roughly half a dozen of these push-pull tetrode types in their product line back in the day, probably all targeted for the VHF/UHF land mobile radio services.? All were single-ended input, push-pull output.? Amperex even ran a full-page ad in the ham radio magazines / handbooks for them.
The most famous of these (if you can call such a thing famous) was the 5894, which was the tube used in the 100 watt PA in the Motorola Motracs.? I had a 10-watt Motorola Business/Dispatcher that used the 6360 as a PA.
Best regards
Mahlon - N4ZK
"
The comment in the blurb about frequent replacement
of the tetrode finals make me wonder if the designers
were Tetrode Men."
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Yes, it's easy to imagine that development lab had some "politics" that impacted the overall design ;-)
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