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ACS-SPEEDEX

 
TOSMATIC

TOSMATIC

 

 

60.00€
SWR-1000

SWR-1000

 

 

50.00€

IC-746PRO

Για τιμή καλέστε: 210.26.20.511
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IF filter passband characteristics for CW &SSB

ModePassband width range
50-500Hz600-3600Hz
SSB10 types; 50Hz step31 types; 100Hz step
CW10 types; 50Hz step


Digital Twin PBT
Digital Twin PBT 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.

Manual Notch Filter
Manual Notch Filter 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"!

Digital Noise Reduction
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.

Digital Noise Reduction

AGC Loop Management
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.)

AGC Loop Management

Microphone Equalizer
Bring Hi-Fidelity to the amateur airwaves. The Microphone Equalizer will change your RST from "59" to "Great Audio2 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.

Digital RF Speech Compression
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.

Digital RF Speech Compression

HF + 50MHz + 144MHz All Band Coverage
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.

Continuous Duty at 100W
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.

All Mode Digital Modulation and Demodulation
Let's start with the modulation and demodulation of the signals. For signal purity and clarity, an all mode digital PSN (Phase Shift Network) system has been incorporated into the DSP system. For transmit, this greatly reduces the intermodulation distortion, producing the highest quality transmit audio. While the PSN separates the signal from noise by phasing out noise and other unwanted signals.

IF Filter Shapes
Next is the IF filters. You will never have to purchase optional filters, with over 51 different filter widths, just dial in the width you want. Then select weather you want a sharp or soft filter shape for SSB and CW modes. For the Digital operators, your digital filters are separate from the SSB filters.

Large, Multi-function LCD
Large, Multi-function LCD 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:
  • Channel name
  • Function key assignment
  • Band Scope
  • RTTY decoder screen
  • Memory keyer contents
  • Graphical SWR scale

RTTY Demodulator and Decoder
RTTY Demodulator and Decoder 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.

Ample CW Functions
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.

Memory Keyer
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.

Built-in Antenna Tuner
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.

SSB/CW Synchronous Tuning
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.

Voice Squelch Control (VSC) Function
The Voice Squelch Control function opens the squelch only when receiving a modulated voice signal.


ADDITIONAL FEATURES
  • Triple band stacking register
  • 2 types of preamplifier (Regular and Higain) for HF and 50MHz bands, 1 for 144MHz band
  • 20dB RF attenuator
  • Level adjustable noise blanker (101 steps)
  • BPF function below 500Hz band width in SSB mode
  • 1/4 speed dial tuning function for SSB-data, CW and RTTY modes
  • 108 selectable DTCS and 50 selectable CTCSS with encoder/decoder
  • 1750Hz tone encoder
  • Optional high stability crystal unit, CR-338
  • Up to 10 memo-pads temporarily store frequencies and modes
  • Quick split function with split lock function
  • ± 9.99kHz RIT and ΔTX
  • Band edge beep
  • CI-V capability for PC control
  • VOX
  • Program, memory, select memory and ΔF scans
  • IF transmit audio monitor (SSB mode only; AF transmit audio monitor for the other modes)
  • 102 memory channels
  • 9600bps data terminal
  • AH-4 control circuits
  • Auto TS function
  • Optional voice synthesizer unit, UT-102 announces the operating frequency, mode and S-meter level
  • 1Hz tuning and indication




SPECIFICATIONS

GENERAL
Frequency coverage: Rx 0.030 - 60.000 MHz* 108.000 - 174.000 MHz*
Tx 1.800 - 1.999 MHz* 3.500 - 3.999 MHz* 7.000 - 7.300 MHz*
10.100 - 10.150 MHz* 14.000 - 14.350 MHz* 18.068 - 18.168 MHz*
21.000 - 21.450 MHz* 24.890 - 24.990 MHz* 28.000 - 29.700 MHz*
50.000 - 54.000 MHz*
 144.000 - 148.000 MHz*
* Some freq. bands are not guaranteed.
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: 1 Hz
Power supply requirement: 13.8 V DC ±15% (negative ground)
Power consumption
: Tx
Rx
Max. power
Standby
Max. audio
23 A
2.2 A
3.0 A
Dimensions
(projections not included)
: 287(W) × 120(H) × 316.5(D) mm;
11 5/16(W) × 4 23/32(H) × 12 15/32(D) in
Weight (approx.): 9.0 kg; 19 lb 13 oz
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
Output power
(continuously adjustable)
: SSB, CW, RTTY,
AM
FM 5-100 W
5-40 W
Modulation system: SSB PSN modulation
AM Low power modulation
FM Phase modulation
Spurious emission: 50 dB (HF bands)
60 dB (50/144 MHz bands)
Carrier suppression: More than 40 dB
Unwanted sideband
suppression
: More than 55 dB
ΔTX variable range: ±9.999 kHz
Microphone connector: 8-pin connector (600 Ω)
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
Receive system: Triple conversion superheterodyne system
Intermediate frequencies: 1st 64.455 MHz (for all modes)
2nd 455 kHz (for all modes)
3rd 36 kHz (for all modes)
Sensitivity (typical)
:
Frequency Range
(MHz)
SSB, CW, RTTY
(at 2.4 kHz BW)
AM
(at 6 kHz BW)
FM
(at 15 kHz BW)
0.50 - 1.799__13µV__
1.80 - 27.990.16µV *12µV *1__
28.0 - 29.990.16µV *12µV *10.5µV *1
50.0 - 54.00.13µV *21µV0.25µV *2
144.0 - 148.00.1µV *31µV *30.1µV *3
10 dB S/N for SSB, CW, RTTY and AM, 12 dB SINAD for FM
*1 Pre-amp 1 is ON, *2 Pre-amp 2 is ON, *3 Pre-amp is ON
Squelch sensitivity
(Pre-amp: OFF)
: SSB, CW, RTTY
FM
Less than 5.6 µV
Less than 1 µV
Selectivity
(representative value)
: SSB (BW: 2.4 kHz)



CW (BW: 500 Hz)

RTTY (BW: 350 Hz)

AM (BW: 6 kHz)

FM (BW: 15 kHz)
More than 2.4 kHz/-6dB
Less than 3.2 kHz/-40dB
Less than 3.6 kHz/-60dB
Less than 4.3 kHz/-80dB
More than 500 Hz/-6dB
Less than 700 Hz/-60dB
More than 360 Hz/-6dB
Less than 650 Hz/-60dB
More than 6.0 kHz/-6dB
Less than 15.0 kHz/-60dB
More than 12.0 kHz/-6dB
Less than 20.0 kHz/-60dB
Spurious and image
rejection ratio
: More than 70 dB (HF, 50 MHz bands)
More than 60 dB (144 MHz)
(except IF through on 50 MHz band)
AF output power
(at 13.8 V DC)
: More than 2.0 W at 10% distortion with an 8 Ω load
RIT variable range: ±9.999 kHz
PHONES connector: 3-pin connector 6.35 (d) mm (1/4")
EXT SP connector: 2-pin connector 3.5 (d) mm (1/4") /8 Ω
ANTENNA TUNER
Matching impedance range: 16.7-150Ω unbalanced*1 (HF bands)
20-125Ω unbalanced*2 (50 MHz band)
*1 Less than VSWR 3:1; *2 Less than VSWR 2.5:1
Min. operating input power: 8 W (HF bands), 15 W (50 MHz band)
Tuning accuracy: VSWR 1.5:1 or less
Insertion loss: Less than 1.0 dB (after tuning)

Supplied accessories:
  • Hand microphone
  • DC power cable
  • Spare fuses
  • CW key plug


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