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#Post#: 57--------------------------------------------------
President Grant Extra Channels
DIR By: kycbradio
Date: October 5, 2018, 12:00 pm
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President Grant Extra Channels
1. The switch needed is a SPST/CENTER-OFF type. Mount this in
the radio somewhere.
2. Find the PLL MB8719 chip.Find pin #11 and cut the trace going
to it on the foil side of the PCB.
3. Solder a 4.7k ohm resistor across the cut that you just made.
4. Now you are ready to attach the wires from the switch to the
locations on the PCB.
5. Solder a wire from the top pin on the switch to PCB ground.
6. Solder a wire from the middle pin on the switch to pin #11.
7. Solder a wire from the tbottom pin on the switch to pin #9.
(If you do not get ALL the new channels adjust the VCO
coil,l-18)
With the switch in the UP position:
12 = 27.875 17 = 27.935 22 = 27.995 26 = 28.035
13 = 27.885 18 = 27.945 23 = 28.025 27 = 28.045
14 = 27.895 19 = 27.955 24 = 28.005 28 = 28.055
15 = 27.905 20 = 27.975 25 = 28.015
16 = 27.925 21 = 27.985
With the switch in the CENTER position is regular channels
With the switch in the DOWN position:
12 = 26.335 17 = 26.395 21 = 26.455 24 = 26.475
13 = 26.345 18 = 26.405 22 = 26.465 25 = 26.485
14 = 26.355 19 = 26.425 23 = 26.495 26 = 26.495
15 = 26.365 20 = 26.445 27 = 26.505
16 = 26.385 .
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