RS-232 wiring
When installing the cables of the serial interface, it is recommended that you switch off the operating voltage of all devices (POWER OFF condition).
Port 1 without handshaking
The simplest connection to the PC serial port (RS-232) is shown in the schematic below.
DTR does not need to be connected.
FUSE = 2 A slow
Port 1 and handshaking signals connected
A typical connection between port 1 of the radio and the PC serial port (RS-232) using the handshaking signals is shown in the schematic below.
FUSE = 2 A slow