Ahuja Amplifier

Thread Starter

DeBangis

Joined Jan 20, 2024
4
Good morning,

The amplifier is tuning a radio station. The microphone and the amplifier was both repaired by an electrician; but to no avail, it keeps catching station.

Please what might be the issue(s)?

Thanks,
Babangida.
 

Ian0

Joined Aug 7, 2020
10,049
Usually, it is picked up in the microphone cable and demodulated by a diode or transistor in the input amplifier.
Is the cable screened? Is it a balanced line input?
 

Thread Starter

DeBangis

Joined Jan 20, 2024
4
Usually, it is picked up in the microphone cable and demodulated by a diode or transistor in the input amplifier.
Is the cable screened? Is it a balanced line input?
Yes, it was screened. A new microphone was even bought, still.
 

Alec_t

Joined Sep 17, 2013
14,379
Failed or inadequate decoupling of the power supply might allow almost any part of the circuit to be affected by interference?
 
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