I Fsk Operation; Receive And Transmit - Icom IC-M801GMDSS Instruction Manual

4

RECEIVE AND TRANSMIT

I Functions for receive (continued)
D D 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
and OFF.
• " " and shifting value with direction appear.
w Rotate [CH] to improve the audio readability.
• Adjustable between ±150 Hz in 10 Hz steps.
D D Tuner through function
In the combination with IC-M801GMDSS 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 "
" is displayed, push [F] then
[TUNE ] to tuner through function ON.
THRU
• " " appears instead of "
• Push [TUNE
THRU

I FSK operation

The transceiver has AFSK operation capability when
an AFSK terminal unit is connected— use J2B for
AFSK operation.
q Connect an AFSK terminal unit to the [AF/MOD]
socket as shown at right.
w Select the desired channel to operate AFSK mode.
e Push [MODE
SET
r Operate the AFSK terminal unit.
NOTE:
Some transceivers may operate 1.7 kHz higher
than the IC-M801GMDSS's J2B mode even when
the same displayed frequencies are in use.
12
] to switch the function ON
CLAR
" indicator.
] to turn the function OFF.
] several times to select J2B.
[CH]
[TUNE
AFSK terminal unit connection
To pin 5
To pins 3, 4
To pins 1, 2
5
1
To pin 9
15 11
[F] [RX ]
CLAR
] [F]
THRU
Tx/Rx control
AF ground
AF input
MOD ground
MOD output
Ground
AFSK terminal unit