Yaesu FTM-300DR Advance Manual page 34

• Data cable "CT-167"(optional)
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 input [transceiver ! PC])
CTS (data communication control)
RTS (data communication control)
• Make sure to turn the power to the radio OFF before connecting.
• Refer to the TNC operating manual for instruction on connecting the TNC to a personal
computer.
• RF receive interference may occur because of noise occurring in the personal computer.
When signals cannot be received normally, keep the personal computer at a distance away
from the radio and use a photo-coupler and noise filter to connect.
z Packet communication settings
1. Press and hold the [F(SETUP)] key  [DATA]  [1 COM PORT SETTING]
2. Rotate the DIAL knob to select [OUTPUT].
3. Press the DIAL knob to set "PACKET".
The setting changes in the following order:
OFF  GPS OUT  PACKET  WAYPOINT
Factory default value: OFF
4. Rotate the DIAL knob to select [SPEED], then press the DIAL knob.
5. Rotate the DIAL knob to select the desired communication speed.
The setting changes in the following order:
4800bps  9600bps  19200bps  38400bps  57600bps
Factory default value: 9600bps
6. Press the [BACK] key twice.
7. Rotate the DIAL knob to select [2 DATA BAND SELECT], then press the DIAL knob.
8. Rotate the DIAL knob to select [DATA], then press the DIAL knob.
9. Rotate the DIAL knob to select the band to be used for the packet communication.
The setting changes in the following order:
MAIN BAND  SUB BAND  A-BAND FIX  B-BAND FIX  A=TX/B=RX 
A=RX/B=TX
• Refer to "Sets the APRS and data communication operating band" (page 56) for
details.
• Factory default value: B-BAND FIX
10. Press the [BACK] key twice.
To the transceiver
To the TNC etc.
Brown PKD (packet data input)
Black thick wire GND
Red PSK (PTT)
Orange RX 9600 (9600 bps packet data output)
Yellow RX 1200 (1200 bps packet data output)
Green PK SQL (squelch control)
Blue TXD (serial data output [transceiver  PC])
Grey RXD (serial data input [transceiver ! PC])
White CTS (data communication control)
Black RTS (data communication control)
34