Operation Manual
57
4
RECEIVE AND TRANSMIT
■ Operating AM
q Push [
YY
(
BAND
)]/[
ZZ
(
BAND
)] to select the desired
band or push a band key on the HM-151.
w Push [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.
e Rotate [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)
r Rotate [AF] to set audio to a comfortable listening
level.
t Push [PTT] (microphone) to transmit.
•[TX] indicator lights red.
y Speak into the microphone at your normal voice
level.
•Adjust ‘MIC Gain’ at this step, if necessary. (p. 38)
u Release [PTT] (microphone) to return to receive.
“AM” appears
[Y]
[Z]
[DIAL]
[MODE][AF] [TX] indicator
D Convenient functions for receive
•Preamp and attenuator (p. 72)
➥ 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. 77)
➥ 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. 78)
➥ Push [NB/ADJ] to turn the noise blanker ON and
OFF.
•“ ”appears when the noise blanker is set to ON.
➥ Push and hold [NB/ADJ] for 1 sec. to enter the
noise blanker set mode, then rotate [DIAL] to ad-
just the threshold level, or noise pulse width.
•AGC (auto gain control) (p. 74)
➥ While “
MM
--
33
” is selected, push [F-3
AAGGCC
] 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 “
MM
--
33
” is selected, push and hold [F-3
AAGGCC
]
for 1 sec. to enter the AGC set mode.
•Push [F-2
FFAASSTT
], [F-3
MMIIDD
] or [F-4
SSLLOOWW
] 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
MM
.
•Push [MENU/GRP] momentarily one or more times
to select the menu
MM
--
33
.