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RECEIVING AND TRANSMITTING
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NoiseBlanker
The Noise blanker eliminates pulse-type noise such
as the noise from car ignitions.
The Noise blanker cannot be used in the FM mode.
Push
NB
toturntheNoiseBlankerONorOFF.
Displayed
NOTE
:WhenusingtheNoiseBlanker,receivedsignals
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,orshallowtheDEPTHontheNBmenu.
See the description below for details.
D
AdjustingtheNBlevelandtime
To deal with various type of noise, you can adjust the
attenuationlevelandnoisewidthintheNBmenu.
1. Hold down
NB
for 1 second.
•TurnsONtheNoiseBlankerandopenstheNBmenu.
2. Touch the adjusting item.
(Example: DEPTH)
3. Adjust the level.
(Example: 8)
Rotate
Push
LEVEL
(Default: 50%)
AdjustthelevelwheretheNoiseBlankeractivates
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.
IPPlusfunction
The IP Plus function improves the Intermodulation
Distortion (IMD) quality by exerting the direct sampling
system performance.
This function optimizes the Analog/Digital Converter
(ADC) against the distortion when you receive a
strong input signal. It also improves the Third-order
Intercept Point (IP3) while minimizing the reduction of
the receive sensitivity.
1. Push
FUNCTION
.
•The FUNCTION screen is displayed.
2. Touch [IP+].
L
Touch [IP+] to turn the IP Plus function ON or OFF.
L
Select ON to prioritize the IP quality, and select OFF
to prioritize the receive sensitivity.
3. To close the FUNCTION screen, push
EXIT
.
•“IP+” is displayed when ON is selected.
Displayed
•
SHARP
This selection is to emphasize the passband width of
thefilter.Thefilterhasanalmostidealshapefactor.
Signalsoftheoutofpassbandareextremelyfiltered
out and it gives you better audio quality.
•
SOFT
Thefiltershouldersareroundlyformedasinanalog
filters.Thisdecreasesnoisecomponentsinthe
highandlowfrequenciesofthefilterpassband
and increases the S/N of the target signal. These
characteristics play an effective role in picking up
very weak signals in the 50 MHz band, for example.
The shape factor is kept, and the sharpness of the
bandpass is excellent.
SelectingtheIFfiltershape(Continued)
Содержание IC-7300
Страница 1: ...BASIC MANUAL i7300 HF 50 MHz TRANSCEIVER...
