Open the monophone case by
removing the three screws
Picture 1. Original connection
inside the monophone
Modifications inside the
monophone
1. Remove the 2k7 resistor
(red, viol, red) by cutting the resistor wires
2. Remove diode by cutting
the wires
3. Desolder the shield wire
from the board and resolder it to the mic GND (large hole near mic). Use
some additonal wire.
4. Desolder the red wire
from the board and resolder it to the hole/pad going to the PTT switch
(this was originally the shield wire pad)
Picture 2. Modifications
done inside the monophone
Close the mic case
Obs 1. Place the mic gasket
properly in to the correct position
Obs 2. Place the the PTT
handle and observe the rubber pad between the handle and the switch
Modification to the plug
1. Cut the mic cable near
to the original two end plug
2. Prepare the wires for
soldering, black wire is not used, cut it out
3. Solder as follows: White
- tip, Red - mid, Shield - GND
Picture 3. The wires prepared
for soldering to the plug
Picture 4. Completed microphone
in operation