|
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
EXPERT’S" GUIDE By
Lou
Franklin, K6NH) |
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