Kenwood TM-D710GE Instruction Manual - Page 39

PACKET Connect this transceiver to your personal computer via a Terminal Node Controller (TNC). You can send messages or commands to far away stations, obtain a variety of information via your local bulletin boards, or enjoy other Packet applications. Reference material for starting Packet operation should be available at any store that handles Amateur Radio equipment. Note: When the distance between the radio antenna and your personal computer is too close, interference may occur. DATA terminal pins • When using the built-in TNC, the DATA terminal is not used. COM terminal pins • The COM terminal is on the rear of the Operation panel. Connect this terminal to a personal computer; do not connect a computer to the PC terminal of the TX/RX unit. No. Name a PKD b DE c PKS d PR9 e PR1 f SQC I/O Function I Audio signal for packet transmission - PKD terminal ground I 'L' is transmitted and the microphone is muted O Detected 9600 (bps) data O Detected 1200 (bps) data Squelch control signal; Closed: 'L', Open: 'H' O (The default settings can be changed in Menu 921) No. Name I/O Function a RTS O Request to Send b CTS I Clear to Send c TXD O Transmit Data d GND - Ground e RXD I Receive Data f NC - Non Connect g NC - Non Connect h NC - Non Connect PACKET MODE This transceiver has a built-in TNC which conforms to the AX.25 protocol. This protocol is used for communications between TNCs. For the commands supported by the built-in TNC, see "TNC COMMANDS LIST". Press [TNC] 2 times to enter PACKET mode. Note: ◆ Not all functions available via conventional TNC's are supported by the TNC built in this transceiver. ◆ The built-in TNC could be automatically reinitiated when its malfunction is detected; this does not designate that the transceiver is defective. ◆ To distinguish your various stations or nodes, you can have up to 15 Secondary Station Identifiers (SSIDs); ex. W6DJY-1 to W6DJY-15. You always have to put a dash between your callsign and SSID number. ◆ Packet operation, easily affected by transmit and receive conditions, requires a full-scale S-meter reading for reliable communication. When the S-meter reads less than maximum during 9600 bps operation, communication errors are frequent. The following indicators appear on the transceiver display to show the current TNC status: Indicator Status PACKET The TNC is in Packet mode. STA Packets to be transmitted still remain in the buffer. CON MB MA 12 96 The TNC is in connection with the target station. The mailbox in the TNC is being accessed or connected by the other station. The mailbox in the TNC holds mail addressed to you. 1200 bps packet transfer rate selected. 9600 bps packet transfer rate selected. PACKET-1