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Re: Tracing receive signal for low signal

 

AT 60mV you should a really loud sound from your speaker. Check all the resistors and report on
DC voltages at the audio transistors.

Raj

At 24-12-18, you wrote:
Also interesing at the base of Q71 injecting 1khz signal at 60mv gave a .1 mv peak to peak signal but I could not hear any tone on the speaker. It wasn't until injecting 300mv could I faintly hear the tone and that produced 444mv peak to peak.
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