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16
Installation and Connection
Connecting External Devices
Connection of an external microphone or PTT switch
By connecting an optional microphone MH-48A6JA to the [MIC] jack on the front panel, voice communications are possible in the
mode which is set on the transmitter. Except, when AMS is set on the transmitter, data transmission is not available via the [MIC] jack.
Connection to a personal computer
The provided PC connection cable “SCU-20” and other optional cables can be used to connect the repeater to a personal computer
as a COM port.
Use the [ACC] jack at the back of the repeater to connect with the personal computer.
The pin assignments of the [ACC] jack are as follows.
PKD (packet data input)
GND
PSK (PTT)
RX 9600 (9600 bps packet data output)
RX 1200 (1200 bps packet data output)
PK SQL (squelch control)
TXD (serial data output [transceiver → PC])
RXD (serial data output [transceiver ← PC])
CTS (data communication control)
RTS (data communication control)
Tips
• Make sure to switch off the power to the radio before connecting the cable.
• When using the PC connection cable “SCU-20”, a dedicated driver needs to be installed in the personal computer. Download and use the driver and
installation manual from the YAESU website.