3
1) Connect a .001 µfd disk capacitor (DO NOT use a higher value) from relay RL1
pin 1, to ground (Figure 1).
2) Connect a piece of wire about 8” long from pin 1 of RL1 and run this wire
through the same opening in the shield as the wiring harness.
3) On the audio circuit board, replace 1MΩ resistor R326 with a 2.2MΩ resistor
(Figure 2).
4) At the circuit board junction of R326 and C311, connect one side of a .005 µfd
500v disk capacitor, and connect the other side of this capacitor to the wire from
RL1 pin 1.
Figure 2
Now during receive, the sidetone will be bypassed to ground by the normally closed
contact on RL1. During transmit, RL1 opens and the sidetone works normally.
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