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One of the other sites it is on they think the tube based section is a UHF based motion detector. That the key switch and the exposed circuit board with the sprague lytics on it look like they were part of an alarm system (though the circuit board could be part of a doorbell system).
I highly doubt the boxes with coax in the basement have anything to do with (or any electrical connection to) the tube TX upstairs....Probably the distribution amp for a normal TV antenna, and or cable TV hook up.
These are the kind of questions that come up when the original owners of a house are technically savvy and the new ones are not so much....
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