ICOM IC-R75 Manuale Utente

17

5

RECEIVE FUNCTIONS

■

CW-R (CW Reverse) mode receives CW signals with 
a reverse side CW carrier point like that of LSB and 
USB modes.

Use when interfering signals are near a desired 
signal and you want to change the interference tone.

q

  Push [CW/RTTY] once or twice to select CW 

mode.

w

  Push [CW/RTTY] for 2 sec. to toggle between CW 

and CW reverse (CW REV).

  • Check the interfering tone.

■

Received characters are occasionally garbled when 
the receive signal is reversed between MARK and 
SPACE. This reversal can be caused by incorrect 
TNC connections, settings, commands, etc.

To receive a reversed RTTY signal correctly, select 
RTTY reverse mode.

q

  Push [CW/RTTY] once or twice to select RTTY 

mode.

w

  Push [CW/RTTY] for 2 sec. to toggle between 

RTTY and RTTY reverse (RTTY REV).

  • Check the receive signal.

■

The received CW audio pitch and monitored CW 
audio can be adjusted to suit your preferences (300 
to 900 Hz) without changing the operating frequency.
The received CW audio pitch can be adjusted in 10 
Hz steps.

q

 Push [

(ANT) 

SET] momentarily to enter set mode.

w

  Push [UP Y] or [Z DN] to select the ‘CW PITCH’ 

item.

e

  Rotate the tuning dial to set the desired CW audio 

pitch.

  •  CW audio pitch is displayed in 10 Hz steps. ‘60’ 

indicates 600 Hz CW audio pitch.

r

  Push [

(ANT) 

SET] again to exit set mode.

BFO

1/3 octave

Push for 2 sec.

Desired signal
(600 Hz)

Interference
(800 Hz)

BFO

1/2 octave

Desired signal
(600 Hz)

Interference
(400 Hz)

Shows a 600 Hz CW audio pitch