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4
RECEIVE AND TRANSMIT
■ Operating AM
qPush [
Y
(
BAND
)]/[
Z
(
BAND
)] to select the desired
band or push a band key on the HM-151.
wPush [MODE] momentarily or push and hold for 1
sec. to select AM mode.
•After FM, WFM or AM mode is selected, push [MODE]
for 1 sec. to select from FM, WFM and AM modes.
eRotate [DIAL] to tune in a desired signal.
•The S-meter indicates received signal strength when a
signal is received.
•The default tuning step for AM mode is 1 kHz; this can
be changed using the tuning step program mode. (p. 30)
rRotate [AF] to set audio to a comfortable listening
level.
tPush [PTT] (microphone) to transmit.
•[TX] indicator lights red.
ySpeak into the microphone at your normal voice
level.
•Adjust ‘MIC Gain’ at this step, if necessary. (p. 38)
uRelease [PTT] (microphone) to return to receive.
“AM” appears
[Y]
[Z]
[DIAL]
[MODE][AF] [TX] indicator
DConvenient functions for receive
•Preamp and attenuator (p. 74)
➥ Push [P.AMP/ATT] momentarily to turn the pre-
amp ON or OFF.
•“ ” appears when the preamp is set to ON.
➥ Push [P.AMP/ATT] for 1 sec. to turn the attenua-
tor ON.
•Push [P.AMP/ATT] momentarily to turn the attenuator
OFF.
•“ ” appears when the attenuator is set to ON.
•Twin PBT (passband tuning) (p. 79)
➥ Push [PBT/M-ch/RIT] (switch) momentarily once
or twice to select the twin PBT ON or OFF (M-ch
RIT).
•PBT indicator lights green when the twin PBT is se-
lected.
➥ Rotate [PBT/M-ch/RIT] (controls–inner/outer).
•Push[PBT/M-ch/RIT(
CLR
)] to clear the settings.
•Noise blanker (p. 80)
➥ Push [NB/ADJ] to turn the noise blanker ON and
OFF.
•“ ” appears when the noise blanker is set to ON.
➥ Push [NB/ADJ] for 1 sec. to enter the noise
blanker set mode, then rotate [DIAL] to adjust the
threshold level, or noise pulse width.
•AGC (auto gain control) (p. 76)
➥ While “
M
-
3
” is selected, push [F-3
AGC
] momen-
tarily one or more times to select AGC fast, AGC
middle and AGC slow.
•“ ,” “ ” and “ ” appears when the
fast time constant, middle time constant and slow
time constant is selected, respectively.
➥ While “
M
-
3
” is selected, push [F-3
AGC
] for 1
sec. to enter the AGC set mode.
•Push [F-2
FAST
], [F-3
MID
] or [F-4
SLOW
] to select
the time constant, then rotate [DIAL] to adjust the time
constant.
•Push and hold [MENU/GRP] for 1 sec. once or twice
to select the menu group
M
.
•Push [MENU/GRP] momentarily one or more times
to select the menu
M
-
3
.