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Radio Road Which tuner to get and getting the most from it. Thank God, for the radio! |
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Radio Road Which tuner to get and getting the most from it. Thank God, for the radio! |
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In Reply to: RE: Why can't I receive radio waves using LM386? posted by Eli Duttman on January 15, 2017 at 20:38:22:
...since it's shown as a parallel-resonant circuit, the diode should be connected to the junction of the antenna, (variable?) cap and inductor. The bottom of the parallel cap and inductor should be tied to a good earth ground as should the signal (-) input of the 386. A 500-1000pf at diode output to ground would improve sound quality such that it is and probably make the 386 happier too.
Did not examine 386 circuit for correctness but doesn't strike me as optimum load for tuned circuit. High impedance is better.
Why in Tube DIY? Expectation of superior knowledge! ;-)
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Follow Ups
- It's almost a crude crystal radio but the tuning portion is connected wrong.... - Steve O 21:38:42 01/15/17 (2)
- RE: It's almost a crude crystal radio but the tuning portion is connected wrong.... - Eli Duttman 00:08:12 01/16/17 (1)
- RE: It's almost a crude crystal radio but the tuning portion is connected wrong.... - Jim Doyle 20:03:18 02/10/17 (0)
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