Only Icom brings you Twin Passband tuning! Tailor your IF passband with the Twin PBT by electronically shifting the upper and lower IF passbands. Depending on the use of the concentric knobs, you can either narrow the IF passband, or shift the entire passband to eliminate interfering signals.
Interference management is not a problem with the Manual Notch filter. With it’s incredible 70dB attenuation, the manual notch can eliminate a wide variety of QRM. The Automatic Notch Filter can track two or more interfering signals like Heterodynes and “Key uppers”!
By digitally manipulating the incoming signal, the DSP is able to reduce various types of noise and enhances the receive signal components. Providing an outstanding signal to noise ratio to give clean, clear audio.
Another first in this class of transceiver, the IC-746PRO incorporates a multiple AGC loop management system, which uses the DSP filtering to remove unwanted signals from the AGC control. This means, if an unwanted signal is removed using the DSP, the AGC will not be affected. In other words, “No more pumping of the AGC!” Also, the AGC is independently controllable for mode and the time settings. (Off, 0.1-6.0 or 8.0 sec.)
Bring Hi-Fidelity to the amateur airwaves. The Microphone Equalizer will change your RST from “59” to “Great Audio” and “Nice Signal”. Adjust your audio for Bass and Treble characteristics to total 121 levels for all voice operation. The transmit filter width in SSB mode is selectable from 2.8/2.4/2.2kHz.The Rx tone control is also an equalizer for the received audio. As with the transmit audio, select the amount of Bass and Treble you need for the audio clarity you want.
Need more punch in your signal; the Icom Digital RF Speech Compression gives you all you need without fuss and noise. Great for breaking through QRM
Covering all HF bands as well as 50MHz and 144MHz, the IC-746PRO all mode transceiver also includes a general coverage receiver from 0.03–60MHz and 108-174MHz* with full IF DSP capability.
* Specifications guaranteed 0.5–29.99, 50–54 and 144–148MHz only.
The bipolar 2SC2694’s are used to provide a clean 100 watts of output power for SSB, CW, RTTY and FM modes. (40W in AM). The die-case aluminum chassis and the variable speed cooling fan enables the IC-746PRO to transmit full power all the time*; the perfect companion for those digital mode contests.
* On a 50Ω load at room temperature.
The large multi-function LCD displays frequency, 9-character channel name, channel number, multi functional meter (includes S-meter, RF output, SWR and ALC level) and other operating status. The dot-matrix portion of the LCD shows the following items:
The built-in RTTY demodulator and decoder reads baudot RTTY signals on the screen without turning on your PC or other gear. The RTTY tuning indicator helps critical tuning. The Twin Peak filter removes interfering QRM giving you a more accurate decoded message.
Multi function electronic keyer, variable dot/dash ratio (2.8:1 to 4.5:1) and key speed (6-60 WPM), paddle polarity, bug key etc. CW pitch is adjustable (300 to 900Hz). Full break-in capability. Double key jacks – one each for front and rear panel.
4 channel memory keyer stores up to 50 characters with serial contest number auto-counter, morse cut number and auto repeat function. In addition, a user supplied external keypad* controls the memory keyer from your finger tips.
* Not supplied by Icom.
The internal antenna tuner matches the HF and 50MHz bands automatically. After operating on a band for the first time, the tuner memorizes the selected antenna and preset point providing for very high speed tuning. 2 antenna connectors for HF and 50MHz bands and 1 for 144MHz band is equipped on the IC-746PRO.
You no longer have to worry about losing a CW signal while tuning with SSB mode. With the SSB/CW synchronous tuning, the frequency automatically shifts when you change modes.
The Voice Squelch Control function opens the squelch only when receiving a modulated voice signal.
Specifications
General | ||||||||||
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Frequency coverage*1 Receive |
(unit: MHz) 0.030– 60.000*2 3.500– 3.999 7.000– 7.300 10.100– 10.150 14.000– 14.350 18.068– 18.168 21.000– 21.450 24.890– 24.990 28.000– 29.700 50.000– 54.000 144.000–148.000 *1 Frequency coverage is depending on version. | |||||||||
Mode | USB, LSB, CW, RTTY, AM, FM | |||||||||
Number of memory Ch. | 102 (99 regular, 2 scan edges and 1 call) | |||||||||
Antenna connector |
SO-239×3 (2 for HF/50MHz and 1 for 144MHz bands; 50Ω) | |||||||||
Temperature range |
–10°C to +60°C; +14°F to +140°F | |||||||||
Frequency stability | Less than ±7ppm from 1 min. to 60 min. after power ON. After that, rate of stability change is less than ±1ppm at 25°C (+77°F). Temperature fluctuations (0°C to +50°C; +32°F to +122°F) less than ±5ppm. | |||||||||
Frequency resolution | 1Hz | |||||||||
Power supply requirement | 13.8V DC ±15% | |||||||||
Power consumption |
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Dimensions (projections not included) |
287(W)×120(H)×316.5(D) mm; 115⁄16(W)×423⁄32(H)×1215⁄32(D) in | |||||||||
Weight (approx.) | 9.0kg; 19lb 13oz | |||||||||
ACC 1 connector | 8-pin DIN connector | |||||||||
ACC 2 connector | 7-pin DIN connector | |||||||||
CI-V connector | 2-conductor 3.5 (d) mm (1⁄8″) | |||||||||
DATA connector | Mini DIN 6-pin |
Transmitter | |||||||
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Output power (continuously adjustable) |
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Modulation system |
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Spurious emission |
Less than –50dB (HF bands) Less than –60dB (50/144MHz band) | ||||||
Carrier suppression | More than 40dB | ||||||
Unwanted sideband suppression | More than 55dB | ||||||
TX variable range | ±9.99kHz | ||||||
Microphone connector | 8-pin connector (600Ω) | ||||||
ELE-KEY connector | 3-conductor 6.35(d) mm (1⁄4″) | ||||||
KEY connector | 3-conductor 6.35(d) mm (1⁄4″) | ||||||
SEND connector | Phono (RCA) | ||||||
ALC connector | Phono (RCA) |
Receiver | |||||||||||||||||||||||||
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Receive system | Triple conversion superheterodyne system | ||||||||||||||||||||||||
Intermediate frequencies |
1st 64.455MHz 2nd 455kHz 3rd 36kHz | ||||||||||||||||||||||||
Sensitivity (typical): |
10dB S/N for SSB, CW, RTTY and AM, 12db SINAD for FM *1Preamp is ON *3Preamp is ON | ||||||||||||||||||||||||
Squelch sensitivity |
(Pre-amp: OFF) Less than 5.6μV Less than 1μV | ||||||||||||||||||||||||
Selectivity AM (BW: 6kHz) FM (BW: 15kHz) |
(representative value) More than 2.4kHz/–6dB Less than 3.2kHz/–40dB Less than 3.6kHz/–60dB Less than 4.3kHz/–80dB More than 500Hz/–6dB Less than 700Hz/–60dB More than 360Hz/–6dB Less than 650Hz/–60dB More than 6.0kHz/–6dB Less than 15.0kHz/–60dB More than 12.0kHz/–6dB Less than 20.0kHz/–60dB | ||||||||||||||||||||||||
Spurious and image rejection ratio |
More than 70dB (HF, 50MHz) More than 60dB (144MHz) (except IF through on 50MHz) | ||||||||||||||||||||||||
AF output power (at 13.8V DC) |
More than 2.0W at 10% distortion with an 8Ω load | ||||||||||||||||||||||||
RIT variable range | ±9.99kHz | ||||||||||||||||||||||||
PHONES connector | 3-conductor 6.35 (d) mm (1⁄8″) | ||||||||||||||||||||||||
EXT SP connector | 2-conductor 3.5 (d) mm (1⁄8″)/8Ω |
Antenna Tuner | |
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Matching impedance range
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16.7–150Ω unbalanced*1 (HF bands) 20–125Ω unbalanced*2 (50MHz band) *1Less than VSWR 3:1; *2Less than VSWR 2.5:1 |
Min. operating input power |
8W (HF bands) 15W (50MHz band) |
Tuning accuracy | VSWR 1.5:1 or less |
Insertion loss | Less than 1.0dB (after tuning) |
All stated specifications are subject to change without notice or obligation.
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