Bedienungsanleitung Kenwood TM-D710GA (Seite 39 von 77) (Englisch)

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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.

PACKET-1

DATA terminal pins

No. Name I/O Function

PKD I

Audio signal for packet transmission

DE —

PKD terminal ground

PKS I

‘L’ is transmitted and the microphone is

muted

PR9 O

Detected 9600 (bps) data

PR1 O

Detected 1200 (bps) data

SQC O

Squelch control signal; Closed: ‘L’, Open: ‘H’

(The default settings can be changed in

Menu 921)

COM terminal pins

No. Name I/O Function

RTS O

Request to Send

CTS I

Clear to Send

TXD O

Transmit Data

GND —

Ground

RXD I

Receive Data

NC —

Non Connect

NC —

Non Connect

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.

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 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.

12 1200 bps packet transfer rate selected.

96 9600 bps packet transfer rate selected.

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 Identiﬁ ers (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.

• When using the built-in TNC, the DATA

terminal is not used.

• 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.

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