Preamp And Attenuator - Icom IC-F8100 Instruction Manual

ï Preamp and Attenuator
The preamp amplifies received signals in the front
end circuit to improve the S/N ratio and sensitivity.
Turn this function ON when receiving weak signals.
The attenuator prevents a strong undesired signal
near the desired frequency or near your location,
such as from a broadcast station, from causing dis-
tortion or spurious signals.
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ï Noise Blanker
The noise blanker reduces pulse-type noise such as
that generated by automobile ignition systems.
The noise blanker may distort reception of strong
signals. In such cases, the noise blanker should be
turned OFF.
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RECEIVE AND TRANSMIT
q Hold down [MENU](HOME) for 1 second to enter
the Menu screen.
w Push [r] or [s] to select the "User Menu," and
then push [4].
e Push [r] or [s] to select "Pre Amp."
r Push [t](§) or [u](§§§) to turn the Preamp or At-
tenuator function ON.
t Push [MENU](HOME) twice to return to the nor-
mal operating mode.
q Hold down [MENU](HOME) for 1 second to enter
the Menu screen.
w Push [r] or [s] to select the "User Menu," and
then push [4].
e Push [r] or [s] to select "Noise Blanker."
r Push [u](§§§) to turn the Noise Blanker function
ON.
t Push [s] to select "Blanker Level."
y Push [t](§) or [u](§§§) to adjust the noise blanker
level.
u Push [MENU](HOME) twice to return to the nor-
mal operating mode.
When using the noise blanker, received signals
may be distorted if they are excessively strong.
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