Quote:
Originally Posted by Electronic M
Google inverting op amp circuit (or read the Wikipedia page on op amps) and that will give you the schematic and maths to make a circuit.
Personally I'd try getting a tuner for it. That almost certainly uses the modern IF frequency and generally they aligned TV tuners and IFs to be interchangeable... as long as you don't try something silly like making a late 40s 21MHz tuner work with a 60's 44MHz IF TV.
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I have found stuff like this ,, no idea if it would work or not
https://www.ebay.com/itm/18459874966...wAAOSwzEpf6Su2