Question about Uniden GRANT LT 2-Way Radio

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Uniden grant lt transmit and receives normally but when i key up on AM the AM power regulator gets hot quick i changed out the driver and final and replaced the regulator still does the same thing and it seems that the power output is a little low also modulation

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Sounds like a "short" if it affects modulation + power. Try to inspect board with magnifier for solder bridges, and bad resistors. Change a few resistors near back with new ones. take out slugs near back finals like L10 or L20's not sure if its same as Uniden Pc68xl. but try that. I found turning L19 up to top gave great Modulation. clip D9, Sread coils 1/16 inch in back. Try to get lower carrier. Carrier does not mean anything much. Modulation is what you need. With less Carrier it may cool down that chip. It may be too wound out.

Posted on Mar 31, 2011

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  • Test the driver as well as the pre-driver. Check your microphone to make sure the wiring is good and the PTT is functioning.

  • If you have any comments please feel free to leave them here.
  • Hope this helps and thank you for using FixYa.


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