User manual ICOM IC-781

[. . . ] It is no longer necessary to manually increase the volume to try and capture audio sounds. Microphone compressor This feature compresses microphone audio input to increase average audio output level. This function is effective for long distance communication, or when propagation conditions are poor. Superior basic performance The IC-781 has 0. 03­29. 999999 MHz* general coverage receive capability. [. . . ] A 4element system is employed for the 1st receive mixer, providing superior receive IMD, especially from in-band near-by interfering signals. A well-designed doubleconversion system to help minimize image and spurious responses for better signal fidelity, is also built-in. A newly designed PLL circuit has been adopted to improve C/N ratio characteristics. The combination of the 4-element system mixer and new PLL circuit allows superior basic performance as that of a commercial grade transceiver. *Guaranteed range: 0. 5­29. 999999 MHz RF gain control RF gain control is combined with the squelch control. The RF gain adjusts minimum response receiver gain, and ignores signals weaker than the pre-set level-- providing pleasant stand-by, or scanning. Ample CW features An electronic keyer with a variable dot/dash ratio (2. 8:1 to 4. 5:1) control is built-in. The CW pitch and the key speed are also variable from 300­900 Hz, 6­60 wpm, respectively. Of course, full break-in capability is available with the adjustable break-in delay. The HF bands allow you distances covering many km world. range : ­10°C to +60°C; +14°F to +140°F · Mode · No. · Frequency resolution · Frequency stability : Double-conversion superheterodyne : 0. 16µV (1. 8­29. 999999 MHz) 13 µV (0. 5­1. 799999 MHz) 2 µV (1. 8­29. 999999 MHz) : Less than 5. 6 µV (SSB) : More than 2. 1 kHz/­6 dB Less than 4. 5 kHz/­60 dB More than 6. 0 kHz/­6 dB Less than 20 kHz/­40 dB : More than 70 dB (1. 8­29. 999999 MHz) : More than 2. 0 W at 10% distortion with an 8 load output power *spurious freq. ; below 30 MHz: ­50 dB, above 30 MHz: ­60 dB · Carrier suppression · Unwanted sideband · Microphone connector · KEY connector · SEND connector · ALC connector : More than 40 dB : More than 50 dB : 8-pin connector (600 ) : 3-conductor 6. 5 (d) mm (1/4) : Phono (RCA) : Phono (RCA) · RIT variable range · PHONES connector · EXT SP connector Supplied accessories: · Hand microphone · Spare fuses : ±1200 Hz : 3-conductor 6. 5 (d) mm (1/4) : 2-conductor 3. 5 (d) mm (1/8) /8 · DC power cable All stated specifications are typical and subject to change without notice or obligations. OPTIONS AH-2b ANTENNA ELEMENT IC-PW1 HF+50 MHz 1 kW HF LINEAR AMPLIFIER Covers all HF and 50 MHz bands, provides clean, stable 1 kW output. Automatic antenna tuner and compact detachable controller are standard. All bands between 7­30 MHz can be matched. AH-4 HF+50 MHz AUTOMATIC ANTENNA TUNER Covers 3. 5­30 MHz with a 7 m (23 ft) or longer wire antenna. AT-180 AUTOMATIC ANTENNA TUNER Compact, light weight antenna tuner. PS-85 DC POWER SUPPLY Output: 13. 8 V DC (20 A max. ) SM-20 DESKTOP MICROPHONE High quality desktop microphone. Includes. [UP]/[DOWN] switches and low cut function. SM-8 DESKTOP MICROPHONE Equipped with 2 connection cables. [UP]/[DOWN] switches are included. SM-6 DESKTOP MICROPHONE Electret condenser-type desktop microphone. HM-36 HAND MICROPHONE Same as that supplied. CT-17 CI-V LEVEL CONVERTER For remote transceiver control from a PC equipped with an RS232C port. CR-338 HIGH STABILITY CRYSTAL UNIT Contains a temp. Frequency stability: ±0. 5 ppm FL-52A CW/RTTY narrow; 500 Hz/­6 dB FL-53A CW narrow; 250 Hz/­6 dB FL-96 SSB wide; 2. 8 kHz/­6 dB FL-222 SSB narrow; 1. 8 kHz/­6 dB FL-257 SSB wide; 3. 3 kHz/­6 dB app rox. 24 ;8 . 5 m 0. 3 ft SP-7 EXTERNAL SPEAKER SP-20 EXTERNAL SPEAKER SP-21 EXTERNAL SPEAKER OPC-599 ACC 13 PIN CABLE ADAPTER IC-MB5 MOBILE BRACKET MB-23 CARRYING HANDLE UT-102 VOICE SYNTHESIZER Announces the operating mode, frequency and signal strength level, etc. UT-106 DSP UNIT Provides AF DSP functions, such as noise reduction and auto notch. 455 kHz FILTERS Have good shape factor and provide you with better reception. · AH-710 FOLDED DIPOLE ANTENNA Covers from 1. 9 to 30 MHz band. [. . . ] Frequency stability: ±0. 5 ppm FL-52A CW/RTTY narrow; 500 Hz/­6 dB FL-53A CW narrow; 250 Hz/­6 dB FL-96 SSB wide; 2. 8 kHz/­6 dB FL-222 SSB narrow; 1. 8 kHz/­6 dB FL-257 SSB wide; 3. 3 kHz/­6 dB app rox. 24 ;8 . 5 m 0. 3 ft SP-7 EXTERNAL SPEAKER SP-20 EXTERNAL SPEAKER SP-21 EXTERNAL SPEAKER OPC-599 ACC 13 PIN CABLE ADAPTER IC-MB5 MOBILE BRACKET MB-23 CARRYING HANDLE UT-102 VOICE SYNTHESIZER Announces the operating mode, frequency and signal strength level, etc. UT-106 DSP UNIT Provides AF DSP functions, such as noise reduction and auto notch. 455 kHz FILTERS Have good shape factor and provide you with better reception. · AH-710 FOLDED DIPOLE ANTENNA Covers from 1. 9 to 30 MHz band. Easy to assemble (non-kink construction). 6-9-16, Kamihigashi, Hirano-ku, Osaka 547-0002, Japan Phone: 06 6793 5302 Fax: 06 6793 0013 URL: http://www. icom. co. jp/world/index. html Count on us! Communication Equipment Himmelgeister Str. [. . . ]