The Icom 781 has a built-in multifunction five inch CRT display, spectrum scope, dual watch receive, standard wide and narrow filters for both SSB and CW, iambic keyer, 99 tunable memories, 105 dB dynamic range, 150 watts of RF output power, fully adjustable noise blanker and AGC circuits, all mode operation plus many more features combine to make the Icom IC-781 an amateur's dream rig. The IC-781 operates from 110 VAC.
<| Type: | Amateur HF transceiver | ||
| Frequency range: | TX: 10-160 m + WARC RX: 0.1-30 MHz |
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| Tuning steps: | 10 Hz / 1 KHz | ||
| Mode: | AM/FM/SSB/CW/RTTY | ||
| Channels/memory management: | 99 regular with notes 2 scan edge Lithium battery backup (and one separate lithium battery for the clocks) |
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| Repeater shift/offset: | ±? KHz | ||
| Power supply: | Mains: 100-120 VAC (USA) or 220-240 VAC (Europe, Australia) | ||
| Current drain/power consumption: | RX: 140-150 VA TX: 325-760 VA |
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| Antenna impedance/connector: | 50 ohms (ATU off) / SO-239 | ||
| Dimensions (W*H*D): | 425*149*411 mm (16.8*5.9*16.2") | ||
| Weight: | 23 Kg (50.7 lbs) | ||
| Other features: | Monochrome CRT, Spectrum scope. Clock/timer, Notch, CTCSS/PL on transmit. Twin PBT, NB, Dual watch on the same band, VOX, Built-in keyer and auto-AT (16.7-150 ohms) |
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| RECEIVER SECTION | |||
| Receiver system: | Triple conversion superheterodyne (FM) 1st IF: 46.51 MHz 2nd IF: 9.01 MHz 3rd IF: 455 KHz Quadruple conversion superheterodyne (AM/SSB/CW/RTTY) 1st IF: 46.51 MHz 2nd IF: 9.01 MHz 3rd IF: 455 KHz 4th IF: 10.695 MHz |
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| Sensitivity: | AM (10 dB S/N) 0.1-0.5 MHz: 3.2 uV 0.5-1.8 MHz: 6.3 uV 1.8-30 MHz: 1 uV FM (12 dB SINAD) 28-30 MHz: 0.23 uV SSB/CW/RTTY (10 dB S/N) 0.1-0.5 MHz: 0.5 uV 0.5-1.8 MHz: 1 uV 1.8-30 MHz: 0.16 uV |
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| Selectivity: | AM-W >6 KHz (-6 dB), <15 KHz (-60 dB) FM >15 KHz (-6 dB), <30 KHz (-60 dB) SSB/CW-W/RTTY-W/AM-N >2.4 KHz (-6 dB), <3.8 KHz (-60 dB) CW-N/RTTY-N (CM250Hz Off) >500 Hz (-6 dB), <1 KHz (-60 dB) CW-N/RTTY-N (CM250Hz On) >250 Hz (-6 dB), <800 Hz (-60 dB) |
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| Image rejection: | -80 dB | ||
| AF output power/speaker: | 2.6 W at 10% distortion / 8 ohms | ||
| External speaker connector: | |||
| TRANSMITTER SECTION | |||
| RF output power: | AM: 8-75 W SSB: 15-150 W PEP CW/RTTY/FM: 15-150 W |
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| Modulation system: | AM: Low level modulation FM/RTTY: Reactance modulation SSB: Balanced modulation |
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| Max FM deviation: | ±5 KHz | ||
| Spurious emissions: | Less than -60 dB | ||
| Microphone connector/impedance: | 8-pin / 600 ohms | ||
| MISCELLANEOUS | |||
| Manufactured: | Japan, 1987-1993 (Discontinued) | ||
| Additional info: | New price 1988 in Sweden: 46500:- SEK | ||
| Related documents: | User manual (6.7 MB) | ||
| Modifications: | |||
| Options/Accessories: |
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