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Old 29th Jan 2023, 10:28 pm   #6
Cruisin Marine
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Join Date: Jul 2018
Location: Worthing, West Sussex, UK.
Posts: 983
Default Re: Trio TR2200GX RX Oscillator

It looks to me like a mistake, if C56, went to the C57 on the emitter, it would then be a normal Colpitts Osc. (The clue is the lowish values of those two caps) I wonder if the schematic diagram or whole design was wrong by mistake?
Without that connection I would hope to see a small capacitor (1-3 pF) from C to E to maintain the feedback loop.
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Last edited by Cruisin Marine; 29th Jan 2023 at 10:35 pm.
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