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IC-756PROIII

HF/50MHz All Mode Transceiver

specifications

Specifications

General
Frequency coverage
USA version
Rx 
Tx
 
  
 
 
 
European version
Rx 
Tx

 
 

0.030– 60.000MHz*1
1.800– 1.999MHz 3.500– 3.999MHz
5.3305, 5.3465, 5.3665, 5.3715, 5.4035MHz*2
7.000– 7.300MHz 10.100–10.150MHz
14.000– 14.350MHz 18.068–18.168MHz
21.000– 21.450MHz 24.890–24.990MHz
28.000– 29.700MHz 50.000–54.000MHz
 
0.030– 60.000MHz*1
1.810– 1.999MHz 3.500– 3.800MHz
7.000– 7.100MHz 10.100–10.150MHz
14.000– 14.350MHz 18.068–18.168MHz
21.000– 21.450MHz 24.890–24.990MHz
28.000– 29.700MHz 50.000–52.000MHz
*1Some freq. bands are not guaranteed. *2 USB mode only
Mode USB, LSB, CW, RTTY, AM, FM
Number of memory Ch. 101 (99 regular, 2 scan edges)
Antenna connector SO-239×2 and phono [RCA; (50Ω)]
Temperature range

–10°C to +50°C;

+14°F to +122°F
Frequency stability

Less than ±0.5ppm

(1 min. after power ON; 0°C to 50°C; +32°F to +122°F)
Frequency resolution 1Hz
Power supply requirement 13.8V DC ±15% (negative ground)
Power consumption
Tx Max. power 23A
Rx Standby 3.0A (typ.)
  Max. audio 3.5A (typ.)

Dimensions

(projections not included)

340(W)×111(H)×285(D) mm;

133⁄8 (W)×43⁄8 (H)×117⁄32 (D) in
Weight (approx.) 9.6kg; 21lb 1oz
Transmitter

Output power
SSB, CW, RTTY, FM
AM

 (continuously adjustable)
5–100W
5–40W
Modulation system
SSB
AM
FM 		 
DPSN modulation
Digital low power modulation
Digital phase modulation
Spurious emission

Less than –50dB (HF bands)

Less than –60dB (50MHz band)
Carrier suppression More than 40dB
Unwanted sideband suppression More than 55dB
Microphone connector 8-pin connector (600Ω)
Receiver
Receive system Triple conversion superheterodyne system
Intermediate frequencies
1st 64.455MHz (for all modes)
2nd 455kHz (for all modes)
3rd 36kHz (for all modes)
Sensitivity (typical):

Frequency

Range (MHz)

 SSB, CW, RTTY
(at 2.4kHz BW) 		AM
(at 6kHz BW)

FM
(at 15kHz BW)

0.50–1.799 — 13μV —
1.80–27.99 0.16μV*1 2μV*1 —
28.0–29.99 0.16*1 2μV*1 0.5μV*1
50.0–54.0 0.13μV*2 1μV*2 0.32μV*2

10dB S/N for SSB, CW, RTTY and AM, 12dB SINAD for FM

*1Pre-amp 1 is ON, *2Pre-amp 2 is ON

Squelch sensitivity
SSB, CW, RTTY
FM

 (Pre-amp: OFF)

Less than 5.6μV
Less than 1μV

Selectivity
SSB, RTTY (BW: 2.4kHz)
 
 
 
CW (BW: 500Hz)
 
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 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

(except IF through on 50MHz band)

AF output power

(at 13.8V DC)

More than 2.0W at 10% distortion

with an 8Ω load
RIT variable range ±9.999kHz
PHONES connector 2-pin connector 6.35 (d) mm (1⁄4″)
EXT SP connector 2-pin connector 3.5 (d) mm (1⁄4 ″) /8Ω
Antenna Tuner

Matching impedance range
HF bands
50MHz band 

  
16.7-150Ω unbalanced*1
20-125Ω unbalanced*2
*1Less than VSWR 3:1
*2Less than VSWR 2.5:1
Min. operating input power 8 W
Tuning accuracy

VSWR 1.5:1 or less

(SWR after the motor has stopped)
Insertion loss Less than 1.0dB (after tuning)

Supplied Accessories

  • Hand microphone
  • Spare fuses
  • DC power cable
  • CW key plug