IC-756PRO2
HF/50MHZ ALL MODE
TRANSCEIVER


 

32-Bit Floating Point DSP Unit &
24-Bit AD/DA Converter
The IC-756PROII continues the phenomenal performance of the 32-bit floating point DSP from the IC-756PRO. The 24-bit AD/DA converter makes it possible to provide ultra-wide dynamic range of signal management. The receiver delivers clear signal without distortion in any signal conditions, from a very weak signal to an extremely strong signal. The powerful combination supports many DSP features exclusive to the IC-756PROII

Select an appropriate filter shape, depending on your operating style or band conditions. Independent SSB and CW Filters give you the flexibility.

IF Filter Shapes
You will never have to purchase optional filters, with overone hundred different filter widths, just dial in the width you want.

High Performance Receiver
A measurable improvement in the newly designed 4-element system for the IC-756PROII, delivers a well respected 3rd order intercept point. By refining the receiver front-end mixer circuits, ICOM engineers made improvements in the input filter, buffer amplifier, and other electronic components from the RF stage to the mixer stage.

Digital Twin PBT
Twin PBT allows electronically shift the upper and lower IF passbands, or shift the entire passband to eliminate interfering signal.

Digital RF Speech Compression
ICOM's Digital Speech Processor adds more punch to your signal to break through QRM.

Digital Noise Reduction
The DSP is able to reduce various types of noise and enhances the receive signal components. This provides an outstanding audio and signal to noise ratio which creats clean audio.

Microphone equalizer
The Microphone equalizer allows you to adjust bass and treble characteristics to toal 121 levels for all voice operations. The transmit filter width in SSB mode is selectable from 2.8/2.4/2.2 KHz. The RX tone control is also an equalizer for the received audio. As with transmit audio, select the amount of Bass and Treble you need for the audio clarity you want.

HF + 50 MHz band coverage
Covering all HF bands as well as 50 MHz, the IC-756PROII all mode transceiver also includes a genearl coverage receiver from 0.03-60 MHz with full IF DSP capability.
*) Specification guaranteed 0.5-29.99, 50-54only.

Highly Stable Transmitter
The IC-756PROII utilizes two 2SC5125 transistors in the PA Unit. Along with superior IMD characteristics, these transistors have plenty of power to allow for 100W full duty cycle operation.

Multiple Antennas
The ATU remembers the last tuned combination used in the selected band, allowing quick band hopping from 160-6 meters. Also, the PROII has an antenna switch for up to 3 RX and 2 TX antennas. This antenna management systems included a separate RX antenna connector for receive only antennas like your favorite wire or beverage antenna.

5-inch TFT Color LCD
Enjoy the full 5-inch TFT color display. The IC-756PROII extends its functinability with more display adjustments, color types, and improved contrast. The 8 colors of display settings and 7 types of font settings are available. Various information is indicated on the color LCD, separated into upper and lower screen. The lower screen can spread vertically to increase the information viewing area.

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.

Data Communication
Perfected for the serious Data operator, the IC-756PROII offers Data operation on SSB, AM and FM modes. Special filters, Band Pass Filters (BPF), are automatically selected when the IF filter passband is reuced to 500Hz or less in SSB mode. The BPF automatically sharpens for better rejection of interfering signals. Perfect for PSK31, SSTV and FSK modes.
Along with BPF, the IC-756PROII automatically turns off the Compression and enables the 1/4-tuning step for easier operation and more accurate tuning.

Ample CW functions

  • Full break-in (QSK) function
  • CW pitch control from 300 to 900Hz
  • Multi-function electronic keyer with adjustable keying speed and dot/dash ratio, paddle polarity
  • Double key jack system for iambic, straight, bug or external keyer operation
  • CW reverse

Memory keyer
The internal memory keyer provides 4 memories for programmed station information, calling CQ and callsign. Each memory has a capacity of 55 characters as well as other time saving functions such as automatic repeat, serial contest number auto-counter, and morse cut number functions.


 

OTHER FEATURES

  • Analog and digital meter indicates RF Power, SWR, ALC, and speech compression level
  • Memory pad stores up to 5 or 10 operating frequencies and modes
  • Independent RIT and δTX control for main and sub bands
  • Clock and Timer
  • 101 Alphanumeric memory channels (including 2 scan edges)
  • Auto TS function
  • Dial Lock

 

  • Band egde beep
  • AH-4 Control circuit
  • Optional Voice synthesizer announces operating frequency, mode, and receiving signal strength
  • Computer control with CI-V interface capability with the optional CT-17
  • Programmed Memory, select memory and δF scans
  • VOX
  • IF transmit audio monitor (SSB mode only), AF transmit monitor for other modes
  • 1Hz tuning and indication
OPTIONAL ACCESSORIES
IC-PW1
HF + 50 MHZ 1KW LINEAR AMPLIFIER
Covers all HF and 50 MHz bands, provides clean, stable 1 kW output. Automatic antenna tuner and compact detachable controller are standard. 2 exciter inputs are available.
AH-2b
ANTENNA ELEMENT
For mobile operation with the AH-4. All bands betweet 7-54 MHz can be matched.
AH-4
HF + 50 MHZ AUTOMATIC ANTENNA TUNER
Covers 3.5-54 MHZ with a 7m or longer wire antenna.
SP-20
EXTERNAL SPEAKER
4 audio filters, 5W, 8 OHm
SP-21
EXTERNAL SPEAKER
Style and size are matched to the 756PROII, 5W, 8 OHm
PS-125
DC POWER SUPPLY
Style and size are matched to the 756PROII. 13.8VDC, 25A max.
SM-20
DESKTOP MICROPHONE
Unidirectional, electret microphone for base station operation. [UP/DOWN] switches and a low cut function are available.
CT-17
CI-V LEVEL CONVERTER
For remote transceiver control using a personal computer equipped with an RS232C port. You can change frequencies, operating mode, etc.
UT-102
VOICE SYNTHESIZER
Announces operating frequency and mode.
HM-36
HAND MICROPHONE
Same as that supplied.

SPECIFICATIONS

GENERAL TRANSMITTER
Frequency range (MHz)
 
Receive 0.030-60.000MHz
Transmit 1.800-1.999 MHz 3.5-3.999 MHz
  7.0-7.300 MHz 10.1-10.150 MHz
  14.0-14.350 MHz 18.068-18.168 MHz
  21.0-21.450 MHz 24.89-24.990 MHz
  28.0-29.700 MHz 50.0-54.000 MHz
Output power SSB, CW, RTTY, FM : 5 - 100W
AM : 5 - 40W
Mode USB, LSB, CW, RTTY, AM, FM. Modulation System SSB : DPSN modulation
AM : Digital low power modulation
FM : Digital phase modulation.
No. of memory ch. 102 (99 regular, 2 scan edges) Spurious emissions - 50dB (HF bands)
- 60dB (50 MHz)
Power supply 13.8V DC ±15% (negative grounds) Carrier suppression More than 40dB
Frequency stability Less than ±.0.5 ppm (1 min. after Power ON, 0 to +50°C) Unwanted sideband suppression More than 55dB
Current drain Transmit : max. power - 23A
Receive : standby - 3.0A
Receive : max. audio - 3.5A
Microphone connector
ELE-KEY connector
8-pin modular jack (600 OHm)
3-conductor 6.35(d) mm (1/4")
Usable temp. range -10°C to +60°C KEY connector 3-conductor 6.35(d) mm (1/4")
Dimensions 340(W) x 111(H) x 285(D) mm SEND connector
ALC connector
Phono (RCA)
Pnoho (RCA)
Weight (approx.) 9.6 kg RECEIVER
CI-V connector 2-conductor 3.5(d) mm (1/8) Receive system Triple conversion superheterodyne system
ACC1 connector
ACC2 connector
DATA connector
8-pin DIN connector
7-pin DIN connector
Mini-DIN 6-pin
Intermediate frequencies
 
1st : 64.455 MHz
2nd : 455 KHz
3rd : 36 KHz
ANTENNA TUNER Receive sensitivity (preamp on except 4-4.5 and 8-9 MHz)
 
  SSB/CW
(2.4KHZ BW)
AM
(6KHZ BW)
FM
(15KHZ BW)
0.5-1.8MHz -- 13µV --
1.8-27.99MHz 0.16µV 2.0µV --
28.0-29.99 0.16µV 2µV 0.5µV
50.0-54.0 0.16µV 1µV 0.25µV
Matching impedance range 16.7-150 OHm unbalanced (HF bands)
20-125 OHm unbalanced (50 Mhz)
Squelch sensitivity
(threshold)
SSB, CW, RTTY : Less than 5.6µV
FM : Less than 1µV
Min. operating input power 8W (HF) Selectivity normal setting
 
SSB,RTTY
(BW:2.4KHZ)
More than 2.4 KHz / -6dB
Less than 3.2 KHz / -40dB
Less than 3.6 Khz / -60dB
Less than 4.3 KHz / -80dB
CW (BW:500Hz) More than 500Hz / -6dB
Less than 700Hz / -60dB
AM (BW:6KHz) More than 6.0KHz / -6dB
Less than 15.0KHz / -60dB
FM (BW:15KHz) More than 12.0KHz / -6dB
Less than 20.0KHz / -60dB
Tuning accuracy VSWR 1.5 : 1 or less Spurious and image rejection ratio: More than 70dB
(except IF through on 50MHz band)
Insertion loss Less than 1.0 dB (after tuning) Audio output power More than 2.0W (at 10% distortion on 8 OHm load)
RIT variable range ±9.99KHz
PHONES connector 2-pin conductor 6.35 (d) mm (1/4")
EXT SP connector 2-conductor 3.5(d)mm / 8 OHm