5
OTHER FUNCTIONS
5-4
Noise Blanker (NB)
SSB, CW, FSK and AM modes
The Noise blanker eliminates pulse-type noise such
as the noise from car ignitions.
1. On the FUNCTION screen, touch [NB].
L
Each touch turns the Noise Blanker function ON or OFF.
2. To change the NB level, depth or width, touch
[NB] for 1 second.
•
Turns ON the Noise Blanker and opens the NB menu.
3. Touch the adjusting item. (Example: DEPTH)
4. Rotate
to adjust the level.
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 the OFF Noise
Blanker, or shallow the DEPTH on the NB menu.
See the description below for details.
LEVEL
(Default: 50%)
Set the Noise Blanker activation level to between 0
and 100%.
DEPTH
(Default: 8)
Adjust the noise attenuation level between 1 and 10.
WIDTH
(Default: 50)
Adjust the blanking duration time between 1 and 100.
Noise Reduction
The Noise Reduction function digitally reduces
random noise components, and enhances desired
signals that are buried in noise.
L
The function is effective in the SSB, AM and CW modes.
1. On the FUNCTION screen, touch [NR].
L
Each touch turns the Noise Reduction function ON or OFF.
2. To change the Noise Reduction level, touch [NR]
for 1 second.
•
Turns ON the Noise Reduction and opens the NR menu.
3. Set the Noise Reduction level to between 0 and 15.
•
Adjust the Noise Reduction level to where noise is
reduced and the received signal is not distorted.
L
Set to a higher level to increase the reduction level,
and a lower level to decrease it.
Noise Blanker OFF
Noise Blanker ON
Pulse-type
noise
Receive
signal
Noise Blanker ON
(Not enough DEPTH)
Noise Blanker ON
(WIDTH set too wide)
NB WIDTH
Receive
signal
LEVEL
Receive
signal
Receive signal
Pulse-type
noise remains
Part of the receive signal
is eliminated along with
pulse-type noise
Pulse-type
noise eliminated
Duplex operation
You can receive a communication that uses different
frequencies for transmitting and receiving (Duplex), by
setting the offset frequency and shift direction.
1. On the FUNCTION screen, touch [DUP].
•
Each touch changes between [DUP–], [DUP+] and [OFF].
2. To change the frequency offset or shift direction,
touch [DUP] for 1 second.
3. Touch the numeric keys or rotate
, to set
the frequency offset.
•
Settable range: 0.000 ~ 200.000 MHz (1 kHz step)
Touch to change the Shift direction
Receive frequency
(When the Monitor function is ON.)
Offset frequency
4. Hold down
to turn ON the Monitor function.
•
The receive frequency shifts according to the set frequency
offset and direction, while holding down
.
•
[DUP–] or [DUP+] blinks when the shifted frequency is
out of receive frequency range.
•
The frequency offset and direction is stored in each
memory channel.
•
When the frequency offset is set to 0.000 MHz, the
receive frequency is not shifted.
