Receiving And Transmitting; Preamplifiers; Attenuator; Rit Function - Icom IC-7760 Basic Manual

Preamplifiers

The preamp amplifies 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 Each band memorizes the Preamplifier setting.
z Touch [P.AMP].
L Touching [P.AMP] selects "P.AMP 1," "P.AMP 2," and
"P.AMP OFF."
Wide dynamic range preamplifier.
P.AMP 1 It is most effective for the HF low bands.
• Gain is approximately 12 dB.
High-gain preamplifier.
P.AMP 2 It is most effective for the higher bands.
• Gain is approximately 20 dB.
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
the frequency, or when a very strong electric field,
such as from a broadcasting station, is near your
location.
L Each band memorizes the Attenuator setting.
z Touch [ATT] to set the Attenuator up to 18 dB in 6 dB
steps.
You can also set the Attenuator in 3 dB steps:
1. Touch [ATT] for 1 second.
2. Rotate to adjust the Attenuator level of
MULTI
up to 45 dB.
L If a strong signal is received and "OVF" (Overflow) is
displayed, turn ON the Attenuator or Digital Selector
function, or decrease the RF gain until "OVF" disappears.

RECEIVING AND TRANSMITTING

RIT function

The Receiver Incremental Tuning (RIT) function
compensates for differences in frequencies of other
stations.
The function shifts your receive frequency up to
±9.99 kHz without shifting the transmit frequency.
1. Push
2. Rotate
3. After communicating, push
L You can change the
MENU
L When the Tracking function is ON, the RIT function shifts
the receive frequency on both the Main and Sub bands.

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 turned OFF.
• The Noise Reduction, Notch filter, and Twin PBT
Displayed
4-1
.
RIT
• The RIT function turns ON.
L While using the Fine Tuning function (p. 3-5), the
RIT frequency is displayed in 4 digits, instead of 3.
L Pushing turns the RIT function ON or OFF.
RIT
RIT frequency (3 digits)
to set the RIT frequency to match
RIT/ TX
the received station's transmit frequency.
L You can reset the RIT frequency to "0.00" by holding
down for 1 second.
CLEAR
RIT function.
RIT
CLEAR
RIT/ TX
operation.
CLEAR
»
SET > Function > Quick RIT/∂TX Clear
settings are temporarily turned OFF.
XFC
4
to turn OFF the
RIT
.
XFC
3
4