User manual ICOM IC-M304

[. . . ] INSTRUCTION MANUAL iM304 VHF MARINE TRANSCEIVER FOREWORD MARINE TRANSCEIVER IMPORTANT READ ALL INSTRUCTIONS carefully and completely before using the transceiver. Thank you for purchasing this Icom radio. The IC-M304 VHF is designed and built with Icom's state of the art technology and craftsmanship. With proper care, this radio should provide you with years of trouble-free operation. We hope you agree with Icom's philosophy of "technology first. " Many hours of research and development went into the design of your IC-M304. SAVE THIS INSTRUCTION MANUAL -- This instruction manual contains important operating instructions for the IC-M304. EXPLICIT DEFINITIONS DEFINITION Personal injury, fire hazard or electric shock R WARNING! [. . . ] IMPORTANT: To maximize the readability of your transmitted signal, pause a few sec. after pushing [PTT], hold the microphone 2 to 4 inches (5 to 10 cm) from your mouth and speak into the microphone at a normal voice level. 3 er q yu Microphone t Push [HI/LO] on the microphone to select the output power if necessary. · "LOW" appears when low power is selected. · Choose low power for short range communications, choose high power for longer distance communications. · Some channels are for low power only. w r t y Push and hold [PTT] to transmit, then speak into the microphone. ·" " appears. · Channel 70 cannot be used for transmission other than DSC. NOTE for TOT (Time-out Timer) function The TOT function inhibits continuous transmission over a preset time period after the transmission starts. u Release [PTT] to receive. 7 3 BASIC OPERATION I Call channel programming Call channel is used to select Channel 9 (default), however, you can program the call channel with your most often-used channel in each channel group for quick recall. q Push [U/I/C] (both [Y] and [Z]) on the transceiver several times to select the desired channel group (U. S. A. , International or Canada) to be programmed. to select the call channel of the selected channel group. · "CALL" and call channel number appear. I Channel comments Memory channels can be labeled with a unique alphanumeric ID of up to 10 characters each. More than 6 characters comment scrolls automatically at the channel comment indicator after the channel selection. Capital letters, small letters (except f, j, k, p, s, v, x, z), 0 to 9, some symbols (= + ­ . q Select the desired channel. · Cancel Dualwatch, Tri-watch or Scan in advance. e Push and hold [9] (!6) again for 3 sec. (until a long beep changes to 2 short beeps) to enter call channel programming condition. · Channel number starts blinking. w While pushing [CH/WX], push [!6] to edit the channel comment. · A cursor and the first character start blinking alternately. r Push [Y] or [Z] to select the desired channel. t Push [!6] to program the displayed channel as the call channel. · Push [CH/WX] to cancel. · The channel number stops blinking. e Pushing [Y] or [Z] to select the desired character. · Push [!6] or [CH/WX] to move the cursor forward or backward, respectively. r Repeat step e to input all characters. t Push [DSC] to input and set the comment. · Push [SCAN] to cancel. · The cursor and the character stop blinking. y Repeat steps q to t to program other channel comments, if desired. 8 BASIC OPERATION 3 I Microphone lock function The microphone lock function electrically locks [Y] and [Z] keys on the supplied microphone. This prevents accidental channel changes and function access. While pushing and holding [HI/LO] on the microphone, turn power ON to toggle the Microphone lock function ON and OFF. I AquaQuake water draining function The IC-M304 uses a new technology to clear water away from the speaker grill: AquaQuake. AquaQuake helps drain water away from the speaker housing (water that might otherwise muffle the sound coming from the speaker). The ICM304 emits a vibrating noise when this function is being used. While pushing and holding [Y] and [Z], turn power ON. · A low beep tone sounds while [Y] or [Z] keys are held to drain water, regardless of [VOL] control setting. · The transceiver never accepts a key operation while the AquaQuake function is activated. ·" " scrolls at the channel comment indicator. 3 [Y]/[Z] [HI/LO] I Display backlighting The function display and keys can be backlit for better visibility under low light conditions. [. . . ] r Tighten the end bolts on the clamps (rotate clockwise) so that the clamps press firmly against the inside of the instrument control panel. t Tighten the locking nuts (rotate counterclockwise) so that the transceiver is securely mounted in position as below. y Connect the antenna and power cable, then return the instrument control panel to its original place. e Attach the clamps on either side of the transceiver with 2 supplied bolts (5 × 8 mm). · Make sure that the clamps align parallel to the transceiver body. 34 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE SOLUTION · Check the connection to the transceiver. [. . . ]