Noise Blanker - Icom IC-9700 Basic Manual
Vhf/uhf all mode transceiver
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Also See for IC-9700:
- Advanced manual (173 pages) ,
- Service manual addendum (163 pages) ,
- Service manual (93 pages)
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Noise Blanker
SSB, CW, RTTY and AM modes
The Noise blanker eliminates pulse-type noise such
as the noise from car ignitions.
Push
to turn the Noise Blanker ON or OFF.
NB
NOTE: When using the Noise Blanker, received signals
may be distorted if they are excessively strong, or the
noise is other than a pulse type. In that case, turn OFF the
Noise Blanker, or shallow the DEPTH on the NB menu.
See the description below for details.
D Adjusting the NB level and time
To deal with various type of noise, you can adjust the
attenuation level and blanking depth and width in the
NB menu.
1. Hold down
for 1 second.
NB
• Turns ON the Noise Blanker and opens the NB menu.
2. Touch the item to adjust. (Example: DEPTH)
3. Rotate
to adjust the item. (Example: 8)
MULTI
4. Push
to close the NB menu.
MULTI
NB is OFF
Displayed when
the Noise Blanker
is ON
(DEPTH is too short)
LEVEL
Adjust the level where the Noise Blanker activates
between 0 and 100%.
DEPTH
Adjust the noise attenuation level to between 1 and 10.
Rotate
WIDTH
Push
Adjust the blanking duration time to between 1 and 100.
4-5
RECEIVING AND TRANSMITTING
NB is ON (Effective)
Pulse-type
NB LEVEL
noise
Desired signal
NB is ON
(WIDTH is too wide)
Noise
still exists
Desired signal
Portion of desired signal is also removed
4
1
Noise removed
2
Desired signal
3
4
NB WIDTH
5
NB is ON
6
7
Desired signal
8
9
10
(Default: 50%)
11
12
(Default: 8)
13
(Default: 50)
14
15
16
17
18
19
20
21
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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