Icom IC-M73 Instruction Manual - Page 44
Optional Speaker-microphone
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11 OPTIONAL SPEAKER-MICROPHONE ■ HM-167 descriptions HM-202 is also an optional speaker microphone. see the page 43 for details. Alligator type clip To attach the speaker-microphone to your shirt or collar. PTT switch Push to transmit. Release to receive. Microphone Speaker Turn OFF the transceiver power when connecting the HM-167. 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 approximately 5 to 10 cm (2 to 4 inches) from your mouth, and speak in a normal voice level. 36 ■ Attaching 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 of the arrow to 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.
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