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38
5
FUNCTIONS FOR RECEIVE
5-2 Preamp and attenuator
[P.AMP/ATT]
5-3 RIT function
RIT (receiver incremental tuning) shifts the receive fre-
quency up to ±9.99 kHz in 10 Hz steps without shifting
the transmit frequency. This is useful for fine tuning sta-
tions which call you on an off-frequency or when you
prefer to listen to slightly different sounding voice char-
acteristics, etc.
➀
Push [RIT] to turn the RIT function ON and OFF.
• RIT and the RIT frequency appear in the function display
when the function is ON.
➁
Rotate [RIT/
:
TX] to set a receive frequency shift.
• Push [CLEAR] for 2 sec. to set the RIT shift to zero.
• Push [RIT] for 2 sec. to add the shift frequency to the op-
erating frequency.
[RIT]
[RIT/TX]
[CLEAR]
inside dotted line is
1.6–60 MHz operation
ATT
:
ON
P.AMP
:
OFF
ATT
:
OFF
P.AMP1
:
ON
P.AMP2
:
ON
P.AMP/ATT
P.AMP/ATT
P.AMP/ATT
P.AMP/ATT
P.AMP/ATT
P.AMP/ATT
1 sec.
1 sec.
P.AMP/ATT
BLANK
CH
VFOA
ANT
RIT
SWR
ALC
Po
S
1
20
50
3
3
2
1
1.5
5
7
9
20
40
60
100%
1
USB
RIT indications
The preamp amplifies received signals in the front end
circuit to improve the S/N ratio and sensitivity. Set this
to preamp 1 or preamp 2 when receiving weak signals.
The attenuator prevents a desired signal from distort-
ing when very strong signals are near the desired fre-
quency or when very strong electric fields, such as
from a broadcasting station, are near your location.
These can both be set independently for each band.
➀
Push [P.AMP/ATT] momentarily one or more times
to set the preamp OFF, set preamp 1 ON or set pre-
amp2 ON.
• When the preamp is ON, either preamp 1 or preamp2
appears in the function display.
• When operating on the 144 MHz band, the preamp can
only be set to ON or OFF—there is no preamp1 and pre-
amp2.
• Preamp1 activates the 10 dB preamp for the 1.8 to 54
MHz range; preamp2 activates the 16 dB high-gain pre-
amp for the 21 to 60 MHz range; preamp activates the
VHF preamp for the 144 to 146 MHz range (108 to 174
for the USA version).
➁
Push [P.AMP/ATT] for 2 sec. once or twice to set the
attenuator ON or OFF.
• “ATT” appears in the display when the function is set ON.
■
RIT MONITOR FUNCTION
When the RIT function is ON, pushing and holding
[XFC] allows you to monitor the operating frequency
directly (RIT is temporarily cancelled).
Summary of Contents for IC-746
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