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Test – Connect a speaker or headphones to the "SPKR" jack. Apply power to the PCB.
Connect an antenna to the right pad where inductor L15 will be mounted. Alternately peak
trim capacitors TC4 and TC5 until the band noise is the loudest. Only stations in the band
should now be heard.
Your Measurements/Observations - ______________________________________________
____________________________________________________________________________
Receive RF Gain and RF Mute
[ ]
Install inductor L15.
[ ]
Install trim capacitor TC3.
[ ]
Install the 2N4124 NPN transistor at Q20. Make sure this is the correct transistor.
[ ]
Install diodes D13, D14, D15, D16, D19, D20, D21, and D22. Note cathode ends (bar) so they
are installed correctly.
[ ]
Install resistors R73, R74, R75, and R76.
- Figure 31 -
27
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