Kenwood 440 MHz TH-D7A, 144 instruction manual Packet Operation, equipment

PACKET OPERATION

1Packet is a unit of data transmitted as a whole from one

2computer to another on a network. Packets can be

3transmitted on radio waves as well as on communications lines. Besides a transceiver and a

4computer, all you need is a terminal node controller

5(TNC). A TNC converts packets to audio tones and vice

6versa as one of its tasks. This transceiver has a built-in TNC.

7

A variety of packet applications developed by hams

8include packet bulletin board systems (PBBSs). PBBSs

9are created and maintained by volunteers called a

10System Operator (SysOp). You may access one of your local PBBSs to send e-mail, download a file, or obtain

11various useful information. Thousands of PBBSs, which

12have formed a worldwide network, relay e-mail to its

13intended destination around the world. First find out the call signs and frequencies used by your local PBBSs.

14	Reference material for starting packet operation should
15	be available at any store that handles Amateur Radio
16	equipment.
17	Note:
	◆ Not all functions available via conventional TNCs are supported by
18	the TNC built in this transceiver.
19	◆ Packet operation, easily affected by transmit and receive conditions,
	requires a full-scale S-meter reading for reliable communication.
20	When the S-meter reads less than maximum during 9600 bps
21	operation, communication errors are frequent.
	◆ This transceiver is incapable of functioning as a digipeater.
22	◆ “	” indicates packets to be transmitted still remain in the buffer.
23	TH-D7E Only: When using the VHF band to transmit packets, do not
	select the narrow transmit deviation {page 51}.

PBBS

Mail box

Bulletin board

Data library

52