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#Post#: 60--------------------------------------------------
Sears Roadtalker Channel Expansion
DIR By: kycbradio
Date: October 5, 2018, 12:21 pm
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Sears Roadtalker Channel Expansion
1. Open the radio and you will find a metal case around the pll
chip.unsolder this.
2. Cut the trace around pin 9 and 8
3. Solder a 4.7k resistor from pin 8 to ground.
4. Install a 6 posistion/ double pole rotary swicth in the
radio.
Then run wires (the red lines) from the switch posistions to the
locations on the pc board.
5. Solder a 1n914 diode from pin 1 to pin 4 on the switch.
6. Solder a wire from pins 2A to 3A to 4A to 5A.
Adjust t302, the VCO, so that the radio will TX/RX on all the
extra channels.
HINT: USE A PLASTIC TUNING TOOL TO MAKE THIS ADJUSTMENT OR YOU
WILL BREAK THE COIL!!
POSITION 1
Channel 1 to 40 is = 26.485 to 26.925
POSITION 2
All the regular CB channels
POSITION 3
Channel 12 to 27 is = 27.425 to 27.595
POSITION 4
Channel 1 to 40 is = 27.605 to 28.045
POSITION 5 and 6 will give regular CB Channels
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