Data Communication - Icom IC -765 Instruction Manual

6-6 DATA COMMUNICATION
BASIC OPERATION 6
Read the instruction manual of your terminal unit before
connecting and operating.
ПЕ SHIFT]
OUT position
[NOTCH]
OUT position
(p. 31)
[METER]
Po position
(p. 5)
[PRE/ATT]
OFF position
(р. 21)
(1) RECEIVING
1) Connect a terminal unit as described on p. 14.
2) Set controls and switches as described on p. 19.
3) Push [POWER] IN.
4) Select the desired operating mode and see each section
for the selected mode.
Tech Talk from Icom
What is packet radio?
Packet radio is a highly advanced method of com-
munications that provides digital (data) communica-
tions to radio amateurs. Packet radio provides high
speed transmissions and effective networking and
error checking.
CMSA/CD (Carrier-Sense Multiple Access with
Push [DATA]
(2) TRANSMITTING
1) Set [METER] to the [Po] position to view relative
output power on the meter.
2) Push [DATA].
e [DATA] indicator lights.
e Microphone input is inhibited except when the PTT
switch on the microphone is pushed.
3) Type using your terminal unit keyboard.
e The transceiver automatically transmits and the meter
needle indicates a point, moving slightly according to
data.
4) Adjust [RF PWR] to the desired output power level.
Collision Detection) controls a packet radio station
by preventing transmission when a frequency is
busy. The system also allows many stations on the
same frequency at the same time.
To operate using packet radio you need a transceiver,
a computer equipped with an RS-232C 1/0 port,
and a TNC (Terminal Node Controller).
Packet radio can send character messages typed
from a computer keyboard or computer software
data stored on a floppy disk.