Proper microphone gain/ALC readings cannot be obtained unless the user adjusts the TX GAIN potentiometer on the rear of the DSP-100. This irregularity is caused of the DSP-100 MIC amplifier (IC-5).
Remove capacitor C200 from the IF unit on the transceiver, and replace it with R300, a chip jumper wire.
Qty Description Kenwood Part No. Circuit description
1 Chip jumper R92-0670-05 R300
Caution: This modification requires soldering equipment rated for CMOS type circuits. It also requires familiarity with surface mount soldering techniques. If you do not have the proper equipment or knowledge do not attempt this modification yourself. Seek qualified assistance.
Time required for this modification is 1 hour or less.