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. Any other information which might facilitate the rescue. i FOREWORD Thank you for purchasing this Icom product. The IC-M31 VHF MARINE TRANSCEIVER is designed and built with Icom's state of the art technology and craftsmanship. [. . . ] 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. · 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] 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 power save function activates automatically when no signal is received for 5 sec. 4 r Push [H/L·LOCK] to select the output power if necessary. - "LOW" appears when low power is selected; no indication when high power is selected. - Choose low power to conserve battery power, choose high power for longer distance communications. - Some channels are for low power only. t Push to transmit y Release to receive Microphone q Power ON r Set output power w Set volume w Set the squelch level w Set the squelch level t Push and hold [PTT] to transmit, then speak into the microphone. - " " appears. - Channel 70 cannot be used for transmission. e Set channel y Release [PTT] to receive. 10 4 BASIC OPERATION I Call channel programming The call channel key is used to select the default channel, however, you can program your most often-used channel in each channel group for quick recall. [. . . ] Otherwise the transceiver may not be attached to the belt clip or swivelled properly if the transceiver is accidentally dropped and the base clip is scratched or damaged. 26 10 TROUBLESHOOTING POSSIBLE CAUSE SOLUTION · Recharge the battery pack. 10 PROBLEM The transceiver does · The battery is exhausted. · Speaker has been exposed to water. Transmitting is impossi- · Some channels are for low power or re- · Change channels. [. . . ]