Справочник Пользователя для ICOM IC-703

The IF shift function electronically changes the pass-
band frequency of the IF (intermediate frequency)
and cuts out higher or lower frequency components
of the IF to reject interference. The function shifts the
IF frequency up to ±1.2 kHz in 15 Hz steps in
SSB/CW/RTTY modes and up to ±250 Hz in 3 Hz
steps in CW-

ã/RTTY-ã modes. The IF shift is not

available in FM and AM modes.
(

ã: Narrow)

qAdjust the [SHIFT] control for a minimum interfer-

ence signal level.

• The audio tone may be changed while the IF shift is in

use.

wSet the shift control to its center position when

there is no interference.

The IF shift is displayed graphically (for about 1 sec.)
each time the shift control is rotated.

Shifts low

Center

Shifts high

SHIFT

[SHIFT]

CH

VFO A

S1

5

3

7

9

20

40

60dB

USB

■RIT function

The RIT (Receive Incremental Tuning) function com-
pensates for off-frequencies of communicating sta-
tions. The function shifts the receive frequency up to
±9.99 kHz in 10 Hz steps without moving the transmit
frequency. “

21 SUB DIAL” item in initial set mode

must be set to RIT mode in advance. (p. 79)

qPush [RIT].

• The [RIT] indicator lights red.

wRotate the [M-CH] control to cancel the off-fre-

quencies.

• The transmit frequency is not shifted.

eTo cancel the RIT function, push [RIT] again.

• The [RIT] switch indicator goes out.

The shift frequency of the RIT function can be
added/subtracted to the displayed frequency.

While the RIT indicator is lit, push and hold [RIT] for
1 sec.

NOTE: The RIT function is not available in FM or
AM modes regardless of the Initial Set mode set-
ting. (p. 79)

Push for
1 sec.

USB

USB

Indicator lights red while
RIT function is activated.

[M-CH]

[RIT]

■IF shift function

47

5

FUNCTION FOR RECEIVE