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Tuning Speed Default Switch; Supplemental Scan Settings; Rtty Default Switches; Scan Speed - Icom IC -765 Instruction Manual

Hf all band transceiver

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11-4 TUNING SPEED DEFAULT SWITCH
=
7 C
EE, ИР T.
ШШ
ЩЩ о
11-5 SUPPLEMENTAL SCAN SETTINGS
(1) SCAN
SPEED
(2) SCAN
RESUMPTION
Scan
=p
Scan
clear
resume
ADJUSTMENT
11
Normal
rotation
of the main dial changes the frequency
increment for 5 kHz per full rotation in 10 Hz steps.
To change the frequency increment to 2.5 kHz from 5 kHz
per full rotation, set S41 as shown in the diagram at left.
See p. 52 for the switch location.
The scan
speed can
be changed by the [SCAN
SPEED]
control located under the hatch cover.
Set the switch to the desired position.
In the scan clear position:
The scan function can be automatically cleared when the
transceiver receives a signal.
іп the scan resume position:
The
scan
stops
for approximately
10 seconds
after the
transceiver receives a signal, then resumes scanning.
тү shift frequency and mark polarity сап be changed
ith 52 and 53.оп the MAIN unit.
See the diagram at left.
The
following mark/space
frequencies
and mark
polarity
are set at the factory.
- Mark frequency
:
2125 Hz
- Space frequency
:
2295 Hz
- Shift width
:
170 Hz
- Mark polarity
:
key open
- Space polarity
:
key closed
| 170
Hz
850 Hz
Shift width selector switch
Polarity selector switch
| NORMAL
(Mark : Key open)
REVERSE (Mark : Key closed)

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Questions and answers

sherwin
March 28, 2025

how to adjust the transmit bandwidth

1 comments:
Mr. Anderson
March 28, 2025

To adjust the transmit bandwidth on the Icom IC-765, you can select between LSB and USB modes depending on the frequency band:

- USB is automatically selected on bands above 10 MHz.
- LSB is automatically selected on bands below 7 MHz.
- Push the [SSB] button again to switch between USB and LSB.

The SSB selectivity (bandwidth) is fixed at 2.2 kHz at –6 dB. There is no direct control to manually change the transmit bandwidth beyond selecting USB or LSB.

This answer is automatically generated