Cw Reverse Mode; Cw Pitch Control; Rtty Reverse Mode - Icom IC-R75 Instruction Manual

CW reverse mode

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.

CW pitch control

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 [
SET] momentarily to enter set mode.
(ANT)
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' indi-
cates 600 Hz CW audio pitch.
r Push [
SET] again to exit set mode.
(ANT)

RTTY reverse mode

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.
• Receive audio tone response
1/3 octave
BFO
Push for 2 sec.
CW/RTTY
Desired signal Interference
(600 Hz) (800 Hz)
CW mode (USB side)
Shows a 600 Hz CW audio pitch
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.
5
RECEIVE FUNCTIONS
1/2 octave
BFO
Desired signal Interference
(600 Hz) (400 Hz)
CW REV mode (LSB side)
17