User manual ICOM IC-A3

[. . . ] DEFINITION Personal injury, re hazard or electric shock RWARNING may occur. CAUTION NOTE Equipment damage may occur. No risk of personal injury, re or electric shock. WORD power source of more than 32 V DC. [. . . ] 2 When Memory mode is selected; ·Push and hold this switch for 5 sec. to turn the "Memory name write mode" ON. 1 PANEL DESCRIPTION t TX INDICATOR (p. Shows the channel name when the memory name function is selected. 10) y u VOLUME LEVEL INDICATORS Shows the AF volume level(while receiving). i SET MODE INDICATOR Appears when the Initial set mode is selected. 12) !0 LOCK OUT INDICATOR Appears when the channel is set as a `LOCK OUT' channel. 10) !1 MEMORY CHANNEL INDICATOR Indicates the selected memory channel number `Pr' appears when the priority channel is selected. I Function display q w e r !1 o i u q MEMORY MODE INDICATOR (p. 5) Appears when memory mode is selected. 7) Indicates when the dualwatch function is activated. 8) Indicates when the scan function is selected. 6) "BUSY" appears when receiving a signal or when the squelch is open. 5 NOTE: Large tuning steps should be used only when you want to change the frequency in large increments. Please select regular tuning steps for normal operation. SCAN OPERATION I Scan operation q Push [V/M] to select memory mode or VFO mode, if necessary. ·" " appears on the memory mode. 3 highest frequency · VFO scan Repeatedly scans all frequencies over the entire band. 25 kHz or 8. 33 kHz) lowest frequency Start Scan Jump w Make sure the squelch level is set to the threshold point. · Set a squelch level (01 to 25) where the noise is muted. e Push [SCAN] to start scan. · To change the scan direction, turn [DIAL]. · "SCAN (or P SCAN)" flashes while scanning. r Push [SCAN] again to stop the scan. NOTE: Normal scan or Priority scan is pre-programmed by cloning. Please ask your dealer or system operator for details. ï PRIORITY SCAN ·Priority memory scan While scanning on a memory mode, priority watch checks for a signal on the selected priority channel every 250 m sec except lockout channel. 250 msec. Priority ch SKIP 250 msec. Mch 1 Mch 2* Mch 3 Mch 20 *: Lockout ch ï NORMAL SCAN ·Memory lock scan Repeatedly scans memory channels except skip (lockout) channels. Mch 1 Mch 2* Mch 3 Mch 20 250 msec. SKIP *: Lockout ch 6 3 SCAN OPERATION I On­hook scan On­hook scan (Hanger scan) is available when taking the microphone from its hanger (off­hook) and /or returning it into the hanger (on­hook). w When receiving a signal, scan pauses until the signal disappears. You can converse by taking the microphone from the hook. e Place the microphone on the hook to restart scanning. after the signal disappears even if you did not converse the station. When you take the microphone during the scan operation. [. . . ] e When cloning is finished, turn power OFF, then ON again to exit cloning mode. 14 8 SPECIFICATIONS D Transmitter : 9 W ±1. 5dB (+15 to +35°C) 9 W +2dB, ­3dB (­20 to +55°C) · Modulation depth : More than 85% · Modulation compression : Linear: 85%, Max. : 95% · Amplitude modulation distortion : Less than 10 % · Audio frequency response : +2 dB to ­4 dB from 350 to 2500 Hz More than ­25 dB at 5000 Hz (at 25 KHz channel spacing) More than ­25 dB at 3200 Hz (at 8. 33 KHz channel spacing) · Adjacent channel power : Less than 60 dB (at 25 KHz channel spacing) Less than 50 dB (at 8. 33 KHz channel spacing) · Conducted spurious emissions : Less than ­46dBm (9kHz to 30 MHz) Less than ­36 dBm for harmonics Less than ­46 dBm for nonharmonics (30 MHz to 1 GHz) Less than ­30 dBm for harmonics Less than ­40 dBm for nonharmonics (1 GHz to 4 GHz) · Output power D General · Frequency coverage : 118. 000 to 136. 975 MHz · Channel spacing : 25/8. 33 kHz · Mode : AM (6K00A3E) · Number of memory channels : 20 · Acceptable power supply : 13. 75* V or 27. 5* V DC (negative ground) (*Automatic selectable) · Usable temp. range : ­20 to +55°C · Frequency err : ±1 ppm (0 to +40°C) · Current drain (at 13. 75 V DC): Tx 5 A (at max. AF) 0. 5 A (at stand by) · Antenna impedance : Standard 50 with SWR<3:1 · Dimensions : 150 (W)50 (H)180 (D) mm (projections not incl. ) · Weight : 1. 5 Kg 15 SPECIFICATIONS (VFO CHANNEL ID LIST) D Receiver · Receive system : Double conversion superheterodyne · Intermediate frequencies : 1st 38. 85 MHz 2nd 450 kHz ·Sensitivity (at 12 dB SINAD): Less than 5 dBµV ·Threshold squelch sensitivity: Less than ­6 dBµV ·Harmonic distortion : Less than 5 % (at mod. [. . . ]