Noise Reduction - Icom IC-9700 Basic Manual
Vhf/uhf all mode transceiver
Hide thumbs
Also See for IC-9700:
- Advanced manual (173 pages) ,
- Service manual addendum (163 pages) ,
- Service manual (93 pages)
Table of Contents
Advertisement
4
RECEIVING AND TRANSMITTING
Noise Reduction
SSB, CW, RTTY, AM, FM and DV modes
The Noise Reduction function reduces random noise
components and enhances signal audio.
Push
to turn the Noise Reduction function ON or
NR
OFF.
D Adjusting the Noise Reduction level
Adjust the Noise Reduction level to where noise is
reduced but the received signal is not distorted.
1. Hold down
for 1 second.
NR
• Turns ON the Noise Reduction function and opens the
NR menu.
2. Rotate
to adjust the Noise Reduction
MULTI
level to between 0 and 15.
L Adjust to a higher level to increase the reduction
level, and a lower level to decrease it.
3. To close the NR menu, push
Noise Reduction OFF
NR level 0
Noise components
Displayed
when the Noise
Reduction
function is ON
Rotate
Push
.
EXIT
Noise Reduction ON
NR level 4
Desired signal (CW)
4-6
Notch Filter
SSB, CW, RTTY, AM and FM modes
The IC-9700 has Auto Notch and Manual Notch
functions.
Auto Notch automatically attenuates beat tones,
tuning signals and so on. It can be used in the SSB,
AM and FM modes.
Manual Notch attenuates beat tones, tuning signals
and so on by manually adjusting the filtering
frequency. It can be used in the SSB, CW, RTTY and
AM modes.
D Selecting the Notch filter type
Push
several times to select "AN (Auto Notch)"
NOTCH
or "MN (Manual Notch)."
L Pushing
changes between "AN (Auto Notch),"
NOTCH
"MN (Manual Notch)" and OFF.
D Setting the Manual Notch filter
When Manual Notch is selected, adjust the filtered
frequency.
1. Hold down
NOTCH
NOTCH menu.
• Opens the Notch menu.
• The Manual Notch is automatically selected and "MN"
is displayed.
2. Touch [WIDTH] several times to select the Manual
Notch filter width from "WIDE," "MID" and "NAR."
3. Rotate
slowly, to manually attenuate the
MULTI
frequency.
4. To close the NOTCH menu, push
NOTE: While adjusting, noise may be heard.
This comes from the FPGA and does not indicate an
equipment malfunction.
Displayed when
a notch filter is
selected
for 1 second to display the
.
EXIT
- Quick Links:
- Rear Panel
Hide quick links:
Advertisement
Table of Contents
Need help?
Do you have a question about the IC-9700 and is the answer not in the manual?
Questions and answers
Hi I cannot get my ic7900 to work on independe freq and green light sub is on plus I got main rev and sub in my screen .and cannot get my transceiver work with DUB function.on 2 meter please can you help ?
To resolve the issue where the Icom IC-9700 is not working on an independent frequency with the green Sub light on and the Dualwatch (DUB) function not functioning on 2 meters:
1. Confirm Dualwatch is Enabled: Hold down the OFF button for 1 second to turn the Dualwatch function ON. This activates independent monitoring of both Main and Sub bands.
2. Select the Proper Band: Touch the grayed frequency readout to select the active band. Ensure the Main and Sub bands are set to different frequencies and not both on 2 meters, as the same frequency cannot be set on both bands.
3. Check Band Settings: Ensure that the Sub band is not set to the same frequency or band as the Main. The IC-9700 supports independent operation on different bands, but not the same frequency on both Main and Sub.
4. Verify TX is on Main Band: Transmission is only possible on the Main band (except in Split Frequency mode), so ensure the Main band is the one you intend to transmit on.
5. Check for Mode Compatibility: Some functions only apply to the selected band and mode. Confirm that the correct mode (FM, SSB, etc.) is selected for the band in use.
Following these steps should allow independent frequency operation with Dualwatch enabled.
This answer is automatically generated