User Guide

■ Functions for receive (continued)
DD
Clarity control
Voice signals received from other stations may be diffi-
cult to receive. This may sometimes happen if a sta-
tion is transmitting slightly off frequency. In such cases,
you can compensate by using the clarity control.
q Push [F] then [RX CLAR
] to switch the function ON
and OFF.
•“CLAR” and shifting value with direction appear.
w Rotate [CH] to improve the audio readability.
• Adjustable between ±150 Hz in 10 Hz steps.
[RX CLAR][CH] [F]
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4
RECEIVE AND TRANSMIT
2001 NEW
■ FSK operation
The transceiver has FSK and J2B modes for FSK op-
eration— use F1B when using the built-in oscillator;
use J2B when using an AFSK terminal unit.
q Connect an FSK terminal unit to the [AF/MOD]
socket as shown at right.
w Select the desired channel to operate FSK mode.
• FSK ITU channel group, Ch 4001 to Ch 25040, are only
available when SITOR CH setting is set to ON. (p. 43)
e Push [MODE SET ] several times to select F1B
(FSK) or J2B (AFSK).
r Operate the FSK terminal unit.
NOTE:
➥ FSK tone, shift frequency and FSK polarity can
be adjusted in initial set mode (p. 45)
➥ Some transceivers may operate 1.7 kHz higher
than the IC-M801E’s J2B mode even when the
same displayed frequencies are in use.
FSK terminal unit connection
15
69
To pin 6
To pin 9
To pin 5
FSK keying
AF input
FSK terminal unit
AF ground
Tx/Rx control
Ground
To pins 3, 4
DD
Tuner through function
In the combination with IC-M801E and optional AT-
141, the tuner through function can be used.
By bypassing the tuner unit, the receiver gain in par-
ticular frequency band may be improved depending
on your antenna element length.
➥ While “TUNE” is displayed, push [F] then
[TUNE THRU ] to tuner through function ON.
•“THRU” appears instead of “TUNE” indicator.
• Push [TUNE
THRU ] to turn the function OFF.
[TUNE THRU] [F]
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