I Lock Functions - Icom IC-M402 Instruction Manual

t Push and hold [PTT] to transmit, then speak into the mi-
crophone.
• " " appears.
• Ch 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.
y Release [PTT] to receive.
IMPORTANT: To maximize the readability of your trans-
mitted signal (voice), pause a few sec. after pushing [PTT],
hold the microphone 2 to 5 cm (1 to 2 inches) from your
mouth and speak at a normal voice level.
• Tri-watch becomes dualwatch when receiving a signal on the call
channel.
HM-127 REMOTE-CONTROL MICROPHONE

I Lock functions

The lock function electronically locks keys and switches to
prevent accidental changes and function access from the mi-
crophone.
• All keys, switches and controllers on the transceiver are functional.
ï ï Microphone key lock function
➥ Push [SQL] while pushing
[H/L] to turn the lock function
ON and OFF.
• " " appears.
• Only [PWR], [PTT], [H/L],
[SQL•MONI], [VOL]+[Y]/[Z]
and [SQL]+[Y]/[Z] are func-
tional.
ï ï All key lock function
➥ Turn the power ON by pushing
[PWR] while pushing [H/L] to
turn the all key lock function
ON and OFF.
• " " flashes.
• Only [PWR] and [PTT] are func-
tional.
10
Appears when the micro-
phone lock function is in use.
Flashes when the all lock
function is in use.
30