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5-3
5
FUNCTIONS FOR RECEIVE
■
Selecting the preamp and attenuator
The preamp amplifies received signals in the receiver
input (front end) circuit to improve the S/N ratio and
sensitivity. Turn this function ON when receiving weak
signals.
The attenuator prevents very strong signals near the
desired frequency, such as nearby broadcast stations
or very strong amateur signals, from causing distor-
tion of a desired signal.
➥
Push
P.AMP
ATT
to turn the preamp ON or OFF; hold
down for 1 second to turn the attenuator ON.
• “
” appears when the preamp is ON.
➥
Hold down
P.AMP
ATT
for 1 second to turn ON the at-
tenuator. Push
P.AMP
ATT
turn OFF the attenuator.
• “
” appears when the 20 dB attenuator is ON.
NOTE: Only one of these functions can be acti-
vated at a time.
Either “ ” or
“ ” appears.
Push
Push
Hold down
for 1 second.
P.AMP
ATT
: ON
: OFF
P.AMP
ATT
: OFF
: OFF
P.AMP
ATT
: OFF
: ON
: Hold down for 1 second.
: Push .
■
AGC function
The AGC (automatic gain control) controls receiver
gain to produce a constant audio output level, even
when the received signal strength varies due to fading,
and so on.
D
AGC time constant selection
Push
q
MODE
several times to select the desired
mode.
Push
w
AGC
once or twice to select AGC fast or
AGC slow.
• “
F.AGC” appears when AGC fast is selected, and no
icon appears when AGC slow is selected.
Hold down
e
AGC
for 1 second to turn the AGC
OFF.
• “
AGC-OFF” appears when AGC OFF is selected.
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