User manual ICOM IC-A4 VER02

[. . . ] INSTRUCTION MANUAL VHF AIR BAND TRANSCEIVER iA4 This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. FOREWORD READ ALL INSTRUCTIONS carefully and completely before using the transceiver. CAUTIONS R WARNING!NEVER hold the transceiver so that the antenna is very close to, or touching exposed parts of the body, especially the face or eyes, while transmitting. The transceiver will perform best if the microphone is 5 to 10 cm away from the lips and the transceiver is vertical. SAVE THIS INSTRUCTION MANUAL -- This instruction manual contains important operating instructions for the IC-A4. R WARNING! [. . . ] e LOW BATTERY INDICATOR Appears when the battery is nearing exhaustion. Appears and flashes when battery replacement is necessary. Shows the channel name when the memory name function is selected. 10) 4 t BUSY INDICATORS "BUSY" appears when receiving a signal or when the squelch is open. y MEMORY LOCKOUT INDICATOR "SKIP" appears when the memory channel is set as lockout channel. u MEMORY CHANNEL INDICATOR Shows the memory channel number. When the transceiver output power increases above a specified level, a protection circuit stops the transmitting, then "--" appears on the display instead of the memory channel number. Release [PTT] then push it again to continue transmitting. BASIC OPERATION I Receiving and transmitting CAUTION: Transmitting without an antenna may damage the transceiver. q Rotate [VOL] clockwise to turn power ON, then set to the 10 o'clock position. w Push [V/M]* to select memory mode (or VFO mode: *option). e Select the desired memory channel (or VFO frequency) with the [Y]/[Z] keys. · When receiving a signal, "BUSY" appears and audio is emitted from the speaker. · Further adjustment of [VOL] may be necessary at this point. · Push [SQL] to toggle the squelch function ON and OFF. 6) · When the dial select function is selected, each push increments/decrements the frequency either 100 kHz or 1 MHz. to transfer the memory contents to VFO. · VFO mode is selected. NOTE: · Only frequency data is transferred even if the memory channel has a memory name. · When the preprogrammed memory frequency is outside the range of the preprogrammed VFO edges, an error beep tone sounds and no data is transferred. q Set volume r Push and hold [PTT] to transmit, then speak into the microphone. · Transmit indicator lights. r Push to transmit t Release to receive e Select channel or frequency w [V/M] switch e [SQL] switch r Speak into microphone t Release [PTT] to receive. ï Memory VFO Memory channel contents can be moved to VFO . q Select memory channel to be transferred: Push [V/M] to select memory mode, if necessary. Push [Y] or [Z] to select the memory channel. 5 3 BASIC OPERATION I Setting squelch level The transceiver has a noise squelch circuit to mute undesired noise while receiving no signal. To open the squelch: Push and hold [SQL] to open the squelch. This is useful to listen to weak signals that do not open the squelch. · "BUSY" appears on the display. I Lock function The lock function prevents accidental channel changes and accidental function access. [PTT] and [SQL] still function while the lock function is in use. to toggle the lock function ON and OFF. " " appears when the lock function is in use. To close the squelch: Release [SQL] to close the squelch. MR D Setting the squelch level q While pushing [SQL], push [Y] or [Z] to select the squelch level. [. . . ] 6 The displayed channel cannot be selected. Scan does not start. · All memory channels are programmed as lockout channels. · Beep tones turned OFF. · Cancel the lockout settings of desired channels. p. 9 No beep sounds. · Turn the beep tone ON in set mode. [. . . ]