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SPEAKER-MICROPHONE
■ HM-138 Description
NEVER immerse the connector in water. If the connector be-
comes wet, be sure to dry it 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. 5 to 10 cm (2 to 4 inches)
from your mouth, and speak in a normal voice level.
■ Attachments
Insert the connector of the speaker-microphone into the
[SP MIC] connector on the transceiver and tighten the screw.
IMPORTANT: KEEP the [SP MIC] jack cover attached
(transceiver) when the speaker-microphone is not in use
as illustrated above. 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 ab-
normally if the connector becomes wet.
Alligator type clip
To attach the speaker-mic.
to your shirt or collar, etc.
PTT switch
Transmits during push
Receives during release
Microphone
Speaker
CAUTION: Attach the speaker-microphone s
connector securely to prevent accidental
dropping, or water intrusion in the connector.
Detaching:
Unscrew (q),
then detach the
jack cover (w).
Attaching:
Attach the jack
cover (e), th-
en tighten the
screw (r).
q
w
e
r
IC-M88-2.qxd 02.11.22 3:24 PM Page 27 (1,1)