• You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
  • The Winners of the three Retevis radios 16 Anniversary giveaway are announced!! Click Here to find out if you won!

Cobra 142 No SSB TX

Wire Weasel

Senior Moment
Dec 13, 2008
3,308
970
223
Trying to help a friend. Has a 142 base. AM TX & RX is fine, SSB RX is fine but no SSB TX. Anyone know what component failure would stop SSB TX even though AM is normal?

Thanks!
interview.gif
 

Wouldn't hurt to shoot a little contact cleaner in VR7, and move it around a bit. If cleaning/adjusting VR7 don't make a difference, it's possible that TR25 has gone faulty. TR25 is a 2SC945, a common low/medium gain multi-purpose audio amp transistor. Good luck!
 

dxChat
Help Users
  • No one is chatting at the moment.