Icom HF/VHF/UHF ALL MODE TRANSCEIVER Receive and Transmit, Functions for receive, RIT function

RECEIVE AND TRANSMIT 4

■Functions for receive

DIF shift function

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-ãmodes. The IF shift is not available in FM and AM modes.

➀Adjust the [SHIFT] control for a minimum interfer- ence signal level.

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

➁Set the shift control to its center position when there is no interference.

M-CH SHIFT M-CH SHIFT M-CH SHIFT

Shifts low Center Shifts high

USB

• Graphic display

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

S1 3 5 7 9 20 40 60dB VFO A

CH

DRIT 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. The [SUB/RIT] switch in Initial Set Mode must be set to RIT mode in advance (p. 51).

➀Push [RIT].

•The [RIT] indicator lights red.

➁Rotate the [M-CH] control to cancel the off-fre-

quencies.

•The transmit frequency is not shifted.

➂To cancel the RIT function, push [RIT] again.

•The [RIT] switch indicator goes out.

• Calculate function

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 2 sec.

Note: The RIT function is not available in FM, WFM or AM modes regardless of the Initial Set mode set- ting (p. 51).

[RIT] switch [M-CH] control

Indicator lights red while

RIT function is activated.

USB

RIT/	Push for
SUB	2 sec.

USB

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