User manual ICOM IC-M31

[. . . ] INSTRUCTION MANUAL VHF MARINE TRANSCEIVER iM31 IN CASE OF EMERGENCY If your vessel requires assistance, contact other vessels and the Coast Guard by sending a distress call on Channel 16. RECOMMENDATION CLEAN THE TRANSCEIVER THOROUGHLY WITH FRESH WATER after exposure to saltwater, and dry it before operation. Otherwise, the transceiver's keys, switches and controllers may become inoperable due to salt crystallization. USING CHANNEL 16 DISTRESS CALL PROCEDURE 1. "THIS IS . . . . . . . . . . . . . . . . . . . . . . . . . . . " (name of vessel) 3. Your call sign or other indication of the vessel. [. . . ] These channel groups may be specified for the operating area. q Push [DIAL] to select a regular channel. w Push [Y]/[Z] to select a channel. · "DUP" appears for duplex channels. 4 e To change the channel group, push [DIAL] for 1 sec. · International, U. S. A. *1 and ATIS*2 channels can be selected in sequence. Push International channels Push for 1 sec. for 1 sec. U. S. A channels*1 *1 Available for the UK version only *2 Available for the German version only ATIS channels*2 8 4 BASIC OPERATION I Adjusting the volume level The volume level can be adjusted with [+]/[­]. Push [+]/[­] to adjust the volume level. · "VOL" indicator starts blinking. · There are 32 volume levels to choose. · When no key is pushed for 5 sec. , the transceiver returns to normal condition. I Adjusting the squelch level The IC-M31 has a squelch level adjustment, even though there is no control knob for it. In order to receive signals properly, as well as for the scan to function effectively, the squelch must be adjusted to the proper level. q Push [SQL·MONI], then adjust the squelch level with [+]/[­]. - "SQL" indicator starts blinking. - There are 11 squelch levels to choose from: "OP" is completely open; "10" is tight squelch; "1" is loose squelch level. - When no key is pushed for 5 sec. , the transceiver returns to normal condition. Indicates the volume level. Blinks during volume level adjustment. Indicates the squelch level. w Push [SQL·MONI] again to return to normal condition. CONVENIENT!The squelch level adjustment key can be selected from [Y]/[Z] and [+]/[­] with following operation. · While pushing both [SQL·MONI] and [Y], turn the power ON to set [Y]/[Z] to the squelch level adjustment key. · While pushing both [SQL·MONI] and [+], turn the power ON to set [+]/[­] to the squelch level adjustment key. 9 BASIC OPERATION 4 I Receiving and transmitting CAUTION: Transmitting without an antenna may damage the transceiver. q Push and hold [PWR] to turn power ON. Push [SQL·MONI], and push [­] to open the squelch. Push [SQL·MONI] to stop "SQL" indicator blinking, then push [+]/[­] to set the volume level. Push [SQL·MONI], and push [+]/[­] to set the squelch level. e Push [Y]/[Z] to select the desired channel. - When receiving a signal, " " appears and audio is emitted from the speaker. - Further adjustment of the volume may be necessary at this point. IMPORTANT: To maximize the readability of your transmitted signal, pause a few sec. after pushing [PTT], hold the microphone 5 to 10 cm from your mouth and speak into the microphone at a normal voice level. NOTE: The transceiver has a power save function to conserve the battery power. [. . . ] -- · The temperature is outside of ­25°C to · Leave the transceiver at room temperature +65°C (approx) for a while. Turn the power ON to check if the internal temperature has returned to normal. · The connected battery pack's voltage is · Verify the battery voltage is correct. · Water has entered the transceiver. [. . . ]