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a_non_monotonic_function@lemmy.world 3 weeks agoI have the manuals and I can check those. I can also easily get the model numbers off the units. Are diagrams something that you can find for old hardware online?
And I appreciate the assistance. My background is in computer science, so my electrical engineering abilities are slim.
vk6flab@lemmy.radio 3 weeks ago
Fellow computer geek here … also a radio amateur.
No idea what the availability of circuit diagrams is for your gear. In amateur radio equipment the user manual regularly has them, sometimes as big foldout sheets. I’d be surprised if they didn’t exist.
a_non_monotonic_function@lemmy.world 3 weeks ago
Thanks for the information. The two units are by Fisher an FM-2421 and CC-3000.
I’m not seeing full circuit diagrams, but they do have some information on what to wire up.
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leftascenter@jlai.lu 3 weeks ago
Antenna ground needs to be used for signal to be read properly.
Turntable audio grounding (different from electrical power grounding) may help prevent hums when the common 0V grounding passes by the power ground.
a_non_monotonic_function@lemmy.world 3 weeks ago
That is what it looked like, but that surprised me. My turntable is more modern and doesn’t require a ground. As for the antenna, yes, that makes sense!
But am I misreading something… neither of those seems like an actual dangerous situation? Oddly enough the components that I would normally guess were more dangerous (specifically the pre-amp and amp) don’t seem to have a ground circuit exposed despite the two-prong set-up.