4-29
■
Operating AM
q
Push a band key to select the desired band.
w
Push
AM/FM
to select AM.
• “AM” indicator appears.
• After AM mode is selected, push
AM/FM
to toggle be-
tween AM and FM modes.
e
Rotate the main dial to tune to the desired fre-
quency.
• The S-meter indicates received signal strength when
signal is received.
r
Rotate [AF] to set audio to a comfortable listening
level.
t
Push
TRANSMIT
or [PTT] (microphone) to transmit.
• The TX indicator lights red.
y
Speak into the microphone at your normal voice
level.
• Adjust the microphone gain with [MIC] at this step, if
necessary.
u
Push
TRANSMIT
or release [PTT] (microphone) to
return to receive.
Appears
[MIC]
[TX] indicator [RX] indicator
[AF]
Main dial
Band keys
AM/FM
4
RECEIVE AND TRANSMIT
• Preamp
(p. 5-10)
➥
Push [P.AMP]
(MF3)
several times to set the
preamp OFF, preamp 1 ON or preamp 2 ON.
• Hold down [P.AMP] (MF3)
for 1 second to turn the
preamp function OFF.
• “P.AMP1” or “P.AMP2” appears when the preamp 1
or preamp 2 is ON.
• Attenuator
(p. 5-10)
➥
Push [ATT]
(MF4)
several times to set the attenu-
ator in 6 dB steps.
• Hold down [ATT]
(MF3)
for 1 second to turn the
attenuator function OFF.
• “ATT” and attenuation level appear when the attenu
-
ator is ON.
• Noise reduction
(p. 5-18)
➥
Push
NR
to turn the noise reduction ON or
OFF.
• Rotate [NR] control to adjust the noise reduction
level.
• Noise reduction indicator (above
NR
switch) lights
when the noise reduction is ON.
• Audio tone control
(p. 12-4)
➥
Push [SET]
F-7
then [LEVEL]
F-1
to enter level
set mode. Select an item with [
Y
]
F-1
/[
Z
]
F-2
then rotate the main dial to adjust the audio tone.
• Twin PBT (passband tuning)
(p. 5-13)
➥
Rotate [TWIN PBT] controls (inner/outer).
• PBT indicator (above
PBT-CLR
switch) lights when
PBT is in use.
• Hold down
PBT-CLR
for 1 second to clear the set-
tings.
• Noise blanker
(p. 5-17)
➥
Push
NB
to turn the noise blanker ON or
OFF, and then rotate [NB] control to adjust the
threshold level.
• Noise blanker indicator (above
NB
switch) lights
when the noise blanker is ON.
• Hold down
NB
for 1 second to enter noise blank-
er set mode.
• Notch filter
(p. 5-19)
➥
Push
NOTCH
to turn the manual notch func-
tion ON or OFF.
• Rotate [NOTCH] control to set the attenuating fre
-
quency.
• Notch indicator (above
NOTCH
switch) lights when
either the auto or manual notch is ON.
• AGC (auto gain control)
(p. 5-12)
➥
Push [AGC] switch several times to select AGC
FAST, AGC MID or AGC SLOW.
➥
Push
AGC VR
to turn the AGC time constant
manual setting ON or OFF.
• Rotate [AGC] control to adjust the time constant.
• Auto tuning function
(p. 5-22)
➥
Push [AUTOTUNE] to turn the auto tuning func-
tion ON or OFF.
• The transceiver automatically tunes the desired sig
-
nal within ±5 kHz range.
IMPORTANT!
When receiving a weak signal, or receiving a signal
with interference, the automatic tuning function may
not tune, or may tune to an undesired signal.
D
Convenient functions for receive
