Re: Airband Kit Radio Help!
It sounds like the circuit may be unstable. In my experience, the LM386 can have a quiescent hiss, but not particularly loud. If you are getting a loud hiss this may point to there being instability somewhere. Does the hiss vary with the volume control setting? If you can't use the loudspeaker there may be a fault in the wiring. It's worth having a good double check. Keep all wiring as short as possible also.
Alan
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