Ready to use (PSK) interfaces can be ordered at the web shop
The images below shows how a simple interface between the rig and
the PC can be made. A 9-pin COM connector has it's DTR at Pin 4 and
pin 5 is GND.
These are the components used for the circuit:
R1 = 330 Ohm (orange, orange, brown)
R2 = 12 Ohm (brown, red, black)
R3 = 1 kOhm (brown, black, red)
R4 = 1,5 kOhm (brown, green, red)
C1 = 4,7 uF
D1 = 1n4148
T1 = BC549
2 stereo plugs for the connection to the
1 sub-d connector for the com-port.
the brand of the PMR, 1 or 2 connectors for the PMR.
Settings in FRN Client
The image below shows how to setup FRN for the com port keyer.
Do not forget to disable the VOX in the PMR. Click on Settings -> Interface to
open the Interface-dialog.