■Receiving and transmitting
qPush [PWR] to turn power ON.
wPush [VOL], then [Y]/[Z] to adjust audio output level.
•Push [SQL], then [Y]/[Z] to mute any audio nose, if necessary. e Push [Y]/[Z] to select the desired channel.
•When receiving a signal, “ 
” appears and audio is emitted from the speaker.
•Further adjustment of audio level may be necessary at this point.
•Use the optional voice scrambler function for privacy. (pgs. 10, 53)
rPush [H/L] to select the output power, if necessary.
•“LOW” appears when low power is selected.
•Choose low power for shorter, high power for longer distance communications.
•Some channels are low power only.
HM-127 REMOTE-CONTROL MICROPHONE 13
tPush and hold [PTT] to transmit, then speak into the mi- crophone.
•“
” appears.
•Channel 70 cannot be used for transmission (for GMDSS use).
Simplex channels, 3, 21, 23, 61, 64, 81, 82 and 83 CAN-
NOT be lawfully used by the general public in U.S.A. wa- 
ters.
yRelease [PTT] to receive.
IMPORTANT: To maximize the readability of your trans-
mitted signal (voice), pause a few sec. after pushing [PTT],
hold the microphone 10 to 15 cm (4 to 6 inches) from your 
mouth and speak at a normal voice level.
qTurn power ON
tPush to 
transmit
yRelease to receive
eSet channel
r Set output power
wSet volume
w Set squelch, if required
tSpeak into microphone
■RF attenuator function
➥Push [LO/DX] to turn the RF
attenuator function ON and OFF.
Appears when the RF attenuator function is in use
51
