Icom IC-M72 Instruction Manual - Page 35

10 OPTIONAL SPEAKER-MICROPHONE HM-125 descriptions Alligator type clip To attach the speaker-mic. to your shirt or collar, etc. PTT switch Transmits during push. Receives during release. Microphone Speaker Turn the transceiver power OFF when connecting the HM-125. 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-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 speaker-mic connector onto the [SP MIC] connector and carefully screw it tight, as shown in the diagram below. Be careful not to cross-thread the connection. Set the triangle mark to the front side. CAUTION: Attach the speakermicrophone's connector securely to prevent accidental dropping, or water intrusion in the connector. Detaching: Pull up the cap in the direction 9 of the arrow to 10 detach it. Attaching: Attach the cap in the direction of the arrow completely. IMPORTANT: KEEP the transceiver's [SP MIC] connector cap attached 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 connector has become wet. 29