Receiving And Transmitting; Preamplifiers; Attenuator; Rit Function - Icom IC-7300 Basic Manual

Preamplifiers

The preamps amplify received signals in the receiver
front end to improve the signal-to-noise ratio and
sensitivity. A preamp is used when receiving weak
signals.
L E achbandmemorizesthePreamplifiersetting.
Push (P.AMP).
P.AMP
ATT
L Each push changes between "P.AMP1," "P.AMP2," and
OFF (no icon).
Displayed when the preamp is used.
(Example: P.AMP1)
Widedynamicrangepreamplifier.
P.AMP1
It is most effective for the HF low bands.
High-gainpreamplifier.
P.AMP2
It is most effective for the 50 MHz bands.
NOTE: When you use the preamp while receiving
strong signals, the receiving signal may be distorted.
In such case, turn OFF the preamp.

Attenuator

The Attenuator prevents a desired signal from
becoming distorted when a very strong signal is near
thefrequency,orwhenaverystrongelectricfield,
such as from a broadcasting station, is near your
location.
LEach band memorizes the Attenuator setting.
Hold down (ATT) for 1 second to turn ON the
P.AMP
ATT
Attenuator.
turns OFF the Attenuator (no icon).
P.AMP
LPushing ATT
Displayed when the Attenuator is ON

RECEIVING AND TRANSMITTING

RIT function

The RIT (Receive Increment Tuning) function
compensates for differences in frequencies of other
stations.
The function shifts the receive frequency up to ±9.99
without shifting the transmit frequency.
1. Push
2. Set the RIT frequency to match the receiving
3. After communicating, push

D RIT monitor function

When the RIT function is ON, you can directly monitor
the operating frequency by holding down
L While monitoring, the RIT function is temporarily OFF.
L While monitoring, the settings for the Noise Reduction,
4-1
.
RIT
• The RIT function turns ON.
L While using the Fine Tuning function (p. 3-3), the RIT
frequency is displayed in 4 digits, instead of 3.
again turns OFF the RIT function.
RIT
LPushing
station's frequency.
L You can reset the RIT frequency to "0.00" by holding
down for 1 second.
CLEAR
L You can add the frequency shift to the operating
frequency by holding down
function OFF.
NotchfilterandTwinPBTaretemporarilyOFF.
While holding down
4
RIT frequency
(3 digits)
Rotate
Set RIT
frequency.
for 1 second
RIT .
to turn the RIT
RIT
.
XFC
.
XFC
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