ICOM 279501 Manual De Usuario

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■ HM-125 Descriptions

NEVER immerse the connector in water. If the connector be-
comes wet, be sure to dry BEFORE attaching it to the trans-
ceiver.

NOTE: The microphone is located at the top of the
speaker-microphone, as shown in the diagram above. To
maximize the readability of your transmitted signal (voice),
hold the microphone approx. 2.5 cm (1 inch) from your
mouth, and speak in a normal voice level.

■ Attachment

Insert the connector of the speaker-microphone into [SP MIC]
connector on the transceiver and rotate (screw) the connector
cover as shown in the diagram below. 

IMPORTANT: KEEP [SP MIC] connector cap attached
(transceiver) when the speaker-microphone is not in use.
Water will not get into the transceiver even if the cover is
not attached, however, the terminals (pins) will become
rusty, or the transceiver will function abnormally if the con-
nector has become wet.

Alligator type clip
To attach the speaker-mic.
to your shirt or collar, etc.

PTT switch
Transmits during push.
Receives during release.

Set the triangle 
mark to the front 
side.

CAUTION: Attach the speaker-microphone’s
connector securely to prevent accidental
dropping, or water intrusion in the connector.

Detaching:
Pull up the cap
in the direction
of the arrow to
detach it.

Attaching:
Attach the cap
in the direction
of the arrow
completely.

IC-M90.qxd  04.8.23  3:54 PM  Page 27