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4-7
BASIC MANUAL
4
RECEIVING AND TRANSMITTING
Noise Blanker
SSB, CW, RTTY, and AM modes
The Noise blanker eliminates pulse-type noise,
such as the noise from car ignitions.
1. Push
.
• Opens the FUNCTION screen.
2. Touch [NB].
L
Touching [NB] turns this function ON or OFF.
3. To close the FUNCTION screen, push
.
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. Push
.
• Opens the FUNCTION screen.
2. Touch [NB] for 1 second.
• Turns ON the Noise Blanker and opens the NB
menu.
3. Touch the item to adjust. (Example: DEPTH)
4. Rotate
to adjust the item.
(Example: 8)
5. To close the NB menu, push
.
LEVEL
(Default: 50%)
Adjusts the level where the Noise Blanker
activates between 0 and 100%.
DEPTH
(Default: 8)
Adjusts the noise attenuation level to between
1 and 10.
WIDTH
(Default: 50)
Adjusts the blanking duration time to between 1
and 100.
NB is OFF
NB is ON (Effective)
NB is ON
(DEPTH is too short)
NB is ON
(WIDTH is too wide)
Pulse-type
noise
Desired signal
NB LEVEL
Noise removed
Portion of desired signal is also removed
Desired signal
Desired signal
Desired signal
Noise
still exists
Displayed
when the Noise
Blanker is ON.
Summary of Contents for IC-705
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