Operation Manual

7-2
7
FUNCTIONS FOR RECEIVE

Preamplifier
The preamp amplifies received signals in the receiver
front end to improve the signal-to-noise ratio and sen-
sitivity. Set this to P.AMP 1 or P.AMP 2 when receiving
weak signals.
 Push the Multi-function [P.AMP]() key several times
to turn ON preamp 1 or preamp 2, or to turn OFF
the preamp.
 Hold down the Multi-function [P.AMP]() key for 1
second to turn OFF the preamp.
NOTE: The preamp (P.AMP 1 or P.AMP 2) cannot
be used while the Digital RF selector is in use.
Also the preamp is automatically disabled when the
Digital RF selector is turned ON.
 About P.AMP 2
P.AMP 2 is a high gain receive amplifier. When it is
used during times of strong electric fields, distortion
sometimes results. In such cases, set the transceiver
to “P.AMP 1” or “P.AMP OFF.”
(≈) Multi-function keys
• When selecting Preamp 1
• When selecting Attenuator (6 dB)
Especially for maintaining IP3. Gain is
approximately 12 dB.
High-gain preamp for all bands. Gain
is approximately 20 dB.

Attenuator
The attenuator prevents a desired signal from becom-
ing distorted when very strong signals are near the
frequency or when very strong electric fields, such as
from broadcasting stations, are near your location.
 Push the Multi-function [ATT]() key several times to
set the attenuator to 6 dB, 12 dB, 18 dB or turn OFF
the attenuator.
 Hold down the Multi-function [ATT]() key for 1 sec-
ond several times to set the attenuator to 3 dB, 6 dB,
9 dB, 12 dB, 15 dB, 18 dB, 21 dB or to turn OFF the
attenuator.