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  1. J

    Superstar 121: No FM TX Audio

    Thank you. We're on the same page. I've already soldered back some of the clipped components. At least the ones I could find. I will need to replace the AMC transistor but I'm not sure if I have the part on hand. I'd really like FM audio to work on this radio, and I definitely want it back to...
  2. J

    Superstar 121: No FM TX Audio

    Hi there. Bear with me, as I am quite new to all of this. :) I've acquired a second-hand Superstar 121 radio, (PCB EPT120113Z). While AM TX audio works perfectly fine, FM TX audio is pretty much non-existant. While using a spectrum analyzer, I adjusted the FM deviation (VR5) with no change...
  3. J

    superstar 121

    Superstar 121 (PLL: MC14506P, driver: 2SC2166, final: 2SC2131, PCB: EPT1201102) VR1: S-Meter adj. VR4: Squelch adj. VR5: FM dev. VR8: RF Meter adj. VR12: AMC ("HI" RF pwr. sw. setting) VR14: AMC ("LO" RF pwr. sw. setting) VR13: RF pwr. ("HI" RF pwr. sw. setting) VR16: RF pwr. ("LO" RF...
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