Icom IC-910H - Operating Mode Notes; Operating Frequency Notes; AFSK Operation

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DATA COMMUNICATION
n Operating mode notes
Use FM mode for 9600 bps operation.
Use SSB or FM mode for 1200 bps operation.
n Operating frequency notes
D Operating notes for RTTY and AMTOR
RTTY or AMTOR operating frequency in LSB mode
differs from the displayed frequency.
[Your operating freq.] = [Displayed freq.] – 2125 Hz
(when the frequencies of the RTTY demodulator in
your TNC or TU are — mark = 2125 Hz and space =
2295 Hz).
D Operating notes for PACKET
PACKET operating frequency in LSB mode differs from
the displayed frequency.
[Your operating freq.] = [Displayed freq.] – 2125 Hz
(when the frequencies of the PACKET demodulator in
your TNC are — 2125 Hz/2315 Hz).
D Frequency setting example for AFSK
-WhenoperatingRTTYat144.090MHz:
Set“LSB144.092125MHz”(ifyouusemark=2125Hz
and space=2295 Hz).
-WhenoperatingPACKETat144.110MHz:
Set “LSB 144.112215MHz” (if you use 2115Hz/
2315 Hz).
n AFSK operation
Connect external equipment to either the [DATA]
(MAIN or SUB) or [ACC(1)] socket as described on the
previous page. Set the ACC socket using the general
set mode in advance when you operate via the ACC
socket. (See below.)
qPush[M/S•BAND]toselectthedesiredfrequency
band.
w Push [FM] or [SSB/CW] to select the desired oper-
ating mode.
 •LSBisnormallyused.
 •FMisusedforPACKET.
e Adjust the audio output level with [AF] control.
 •Use[RF/SQL]whenrequired.
r Adjust the desired RF output power.
 •Whenusingthe[MIC]connectorforexternalequipment
connection, the [MIC GAIN] control should be adjusted.
t Select operating mode.
y Control the transceiver from the connected PC or
TNC (TU).
qSelect
band.
wSelect desired
mode.
eAdjust for max.
detected level.
IMPORTANT:
•Removethemicrophonefromthe[MIC]connec-
tor when operating below 1200 bps rate to protect
from noise coming from the microphone.
•During9600bpsrateoperation,noisesignalsfrom
the microphone may not effect PACKET signals.
However, PACKET signal transmission is interrupt-
ed when [PTT] is pushed.
•RemovetheACCplug,orturntheTNCpowerOFF
during phone operation (SSB or FM). The modula-
tion input from the [ACC(1)] socket is always ap-
plied to the modulation circuit.
D Connections via front panel
When connecting a TNC or Scan converter, etc. to the
[MIC] connector, [MIC GAIN] and [AF] adjustments are
required. The [MIC] connector accepts up to 1200 bps.
Use SSB or FM mode for operation.
[MIC GAIN] and [AF] control adjustments are re-
quired.