Icom F3400D / F4400D Operation Guide - Page 175

Previous view 14 OPTIONS HM-222 speaker microphone (for the Portable type transceiver) Microphone [PTT] [Emer] Speaker Belt clip Earphone jack Turn OFF the transceiver before attaching or detaching the microphone NOTE: ••N EVER immerse the connector in water. If the connector becomes wet, be sure to dry it BEFORE attaching to the transceiver. ••The microphone element is located at the top left of the speaker microphone, as shown in the illustration above. To maximize the readability of your transmitted audio, hold the microphone approximately 5 to 10 cm (2 to 4 inches) from your mouth, and then speak at your normal voice level. You can connect an earphone (user supplied) to the earphone jack on the microphone. DDAttaching Attach the connector of the speaker microphone to the multi connector on the transceiver and tighten the screw. Turn OFF NOTE: KEEP the connector cover attached to the 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 connector becomes wet. Screw Coin CAUTION: Firmly attach to the multi connector, but do not overtighten. A loose connection will allow water intrusion into the connector. An overtightened connection will damage the connector pins on the transceiver. 14-3