Icom IC -2410A Instruction Manual page 9

HM-56 rear panel
(U.S.A. and Asia
versions)
( PTT SWITCH
Push and hold to transmit.
PANEL DESCRIPTION 1
@ LOCK SWITCH [LOCK]
Prevents
accidental
input from
all keys except
the PTT
switch and
[TONE]
of the HM-59 hand
microphone.
@® ACTIVE INDICATOR (HM-56 only)
Lights up or blinks when a key is pushed or a tone
is being transmitted.
(D DTMF KEYBOARD (HM-56 only)
Used DTMF codes for auto patch, repeater control,
optional Mic DTMF Remote and other functions.
e Attach the
supplied microphone
sheet
to the HM-56
keyboard.