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! [. . . ] · 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. 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). 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. Y Z While pushing and holding [SCAN], push [Y] or [Z] to adjust the brightness of the LCD and key backlight. · The backlight is selectable in 3 levels and OFF. Scrolls 9 4 SCAN OPERATION I Scan types Scanning is an efficient way to locate signals quickly over a wide frequency range. When the Weather alert function is turned ON, the previously selected (last used) weather channel is also checked while scanning. 29) PRIORITY SCAN CH 01 CH 02 Set the TAG channels (scanned channels) before scanning. Clear the TAG channels which inconveniently stop scanning, such as those for digital communication use. (Refer to the right page for details. ) Choose Priority or Normal scan in Set mode. [. . . ] If a fuse blows or the transceiver stops functioning, track down the source of the problem, if possible, and replace the damaged fuse with a new, rated one. Microphone hanger and screws (3×16) DC power cable I Cleaning If the transceiver becomes dusty or dirty, wipe it clean with a soft, dry cloth. AVOID the use of solvents such as benzene or alcohol, as they may damage transceiver surfaces. Warning sticker 32 CONNECTIONS AND MAINTENANCE 8 I Mounting the transceiver D Using the supplied mounting bracket The universal mounting bracket supplied with your transceiver allows overhead or dashboard mounting. · Mount the transceiver securely with the 2 supplied screws (5 × 20) to a surface which is more than 10 mm thick and can support more than 5 kg. · Mount the transceiver so that the face of the transceiver is at 90° to your line of sight when operating it. [. . . ]