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Icom IC -765 Instruction Manual page 4

Hf all band transceiver

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3
4
FEATURES
COMPLETE
HF TRANSCEIVER
FULLY
AUTOMATIC
HIGH
SPEED
ANTENNA
TUNER
COMPLETE
SYSTEM
FOR
CW OPERATORS
10 Hz DIGIT DISPLAY
BAND
STACKING
REGISTER
105 dB DYNAMIC
RANGE
NEW
PLL CIRCUIT-ADOPTED
DDS
OTHER
CONVENIENT
FEATURES
Icom's new
ІС-765 is an advanced HF all band transceiver
with
a modern
heavy-duty
design
for the serious HF
enthusiast.
Тһе IC-765 features a 10 Hz digit in the display,
a high speed PLL
lock-up time including Icom's exclusive
DDS
circuit,
a newly
developed
fully automatic
antenna
tuner, and many more advanced features.
The built-in CPU memorizes previously matched conditions
on each band.
Tuning speed is ultra fast since tuning starts
from a previous position.
If the antenna tuner cannot tune
from a previously memorized preset position, the advanced
re-try function
automatically
changes the preset position
and memorizes the best preset position.
The
IC-765 has high-speed CW full break-in capability and
many
comfortable
functions
such as a electronic
keyer,
independent iambic key jack, keying speed control and CW
pitch control.
The IC-765 includes
a 500 Hz CW narrow
filter for effectively removing QRM on crowded bands.
The large fluorescent display shows 7 digits for the operat-
ing frequency,
meaning
that the
10 Hz digit is also dis-
played.
Each band memorizes the last used frequency, mode, and
IF filter condition
(narrow or normal).
The feature gives
the ІС-765 a simulation of 18 VFO capability (2 VFOs for
each band).
Receiver ability is fixed by the dynamic range.
The Icom
DFM
(Direct
Feed
Mixer)
system
provides
an excellent
105 dB dynamic range.
The
advanced
Icom
DDS
(Direct
Digital
Synthesizer)
System
ensures
high speed PLL lock-up times, clear signal
emissions, and high C/N characteristics.
A high-speed PLL
provides very fast CW full break-in performances.
- 10 dB preamp
- Selectable attenuator, 10, 20, 30 dB
- 99-channel memory
- Split memory on channels 90 ~ 99
- Built-in 500 Hz CW narrow filter
- Programmed scan, memory scan and selected memory scan
- Separate LED lights on a selected memory channel
- IF shift
- Notch filter
- Low distortion 100 W power amplifier
- Large heatsink and cooling fan
- Fast/Slow/OFF selectable AGC
- RF-type speech compressor
- New-type noise blanker
- DATA switch for advanced data communications
- CI-V bus line

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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