Icom IC-460, IC-450 instruction manual Speaker-Microphone, Optional HM-138 description, Attachment

6 SPEAKER-MICROPHONE

■Optional HM-138 description

Alligator type clip

To attach the speaker-mic.

to your shirt or collar, etc.

PTT switch

Transmits while pushed

Receives while released

Microphone

Speaker

NEVER immerse the connector in water. If the connector becomes wet, be sure to dry it BEFORE attaching it to the transceiver.

NOTE: The microphone is located at the top of the speaker-mi- crophone, as shown in the diagram above. To maximize the readability of your transmitted signal (voice), hold the micro- phone approx. 5 to 10 cm (2 to 4 inches) from your mouth, and speak in a normal voice level.

SPEAKER-MICROPHONE 6

■Attachment

Attach the connector of the speaker-microphone into the [SP MIC] connector on the transceiver and tighten the screw.

6

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

IMPORTANT: KEEP the [SP MIC] jack cover attached (trans- ceiver) 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 trans- ceiver will function abnormally if the connector becomes wet.

45 46