12HM-134 REMOTE-CONTROL MICROPHONE

!1EXTERNAL SPEAKER JACK

Connect the external speaker (an 8 load). The internal

speaker can be deactivated via the Set mode program-

ming. (p. 37)

• The speaker output employs a BTL (Balanced Trans-

Less) circuit, NEVER connect the speaker cable to

ground (or chassis). Use a floating setup.

Function display

!7 !6

!5!4!3 !2!1

WAIT TX BUSY TAG CALL LOW

CAUTION: After connecting the external speaker jack,

cover the jack with water resistant tape as shown below to

avoid water seeping into the microphone.

Binding the mic-cable and external-speaker jack connec-

tion mold with water resistant tape increases the water- proofing of the connection mold.

q

USA

 

INT

w

L

e

rVOL

tSQL

DUP DUAL

!0

P SCAN TRI

 

 

o

SCRM

i

 

 

u

y

 

External SP jack

Connection mold

q CHANNEL GROUP INDICATOR (pgs. 6, 32)

Indicates whether an International (INT) or U.S.A. (USA) channel is selected.

w KEY LOCK INDICATOR (p. 34)

Appears while the key lock function is in use.

Flashes while the all key lock function is in use.

e CHANNEL NUMBER READOUT

Indicates the selected operating channel number. “A” appears when a simplex channel is selected. (pgs. 6, 32)

30

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Image 34
Icom IC-M503 12HM-134 REMOTE-CONTROL Microphone, 1EXTERNAL Speaker Jack, Channel Group Indicator pgs, KEY Lock Indicator p