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UHF CB Repeaters

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Established

1999

MSC42502P PLL 

Models

 GM(Johnson) 4170/4175,
Johnson messanger 40/50/80/191/4120/4125/4135/4140/4145/4230/4250,
Johnson Viking 200/230/260/270/430.

A custom made chip for EF Johnson. It uses BCD programming.

Modification can be done by changing the loop mixing crystals or by changing the BCD programming to the PLL

(THE SCREWDRIVER EXPERTíS" GUIDE By Lou Franklin, K6NH)

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