Icom IC-208H [86/96] I packet operation

Icom IC-208H [86/96] I packet operation
71
11 OTHER FUNCTIONS
Packet operation
D Data speed
For packet operation, the transceiver can be set to one of two
data speeds: 1200 bps or 9600 bps.
q While pushing
[SET•LOCK],
push [PWR] for 1 sec. to enter
initial set mode.
w Push
[SET•LOCK]
or [S.MW•MW] to select the ‘BPS’ item.
e Rotate [DIAL] to select the desired data speed.
r Push
[PWR]
to exit initial set mode.
For 1200 bps operation—
Disconnect the microphone plug from the microphone
connector during data transmission, otherwise the data
signal and voice signal are simultaneously transmitted.
For 9600 bps operation—
When the transceiver is set for 9600 bps data transmis-
sion in set mode, the microphone signal is automatically
cut. Therefore, it is not necessary to disconnect the mi-
crophone plug from the connector in this case.
When pushing [PTT] during data transmission, data trans-
mission is interrupted and voice signals have priority.
D 1200 bps packet operation
q Connect the transceiver and a TNC as illustrated below.
w Set the TNC for transmit.
e Set transmit delay on the TNC.
r Adjust the TNC frequency deviation if necessary.
When using a deviation meter:
Adjust the output of the TNC so that frequency deviation
is in the range ± 3 to ±4 kHz.
When NOT using a deviation meter:
A receiver or transceiver is needed to monitor the trans-
mission—compare the received audio output level when
receiving a TNC modulated signal with high level voice
signals using the microphone. Then adjust the TNC mod-
ulated signal to a lower level than the voice modulated
signal.
SQL
PTT
RX AUDIO
GND
TX AUDIO
TNC side
q DATA IN
w GND
e PTT P
t AF OUT
y P SQL

Содержание

Скачать