Specifications; Antenna Tuner - Icom IC-756PRO III Service Manual

SECTION 1
■ GENERAL
• Frequency coverage:
Receive 0.030–60.000 MHz*
Transmit 1.800–1.999 MHz*
5.3305, 5.3465, 5.3665, 5.3715, 5.4035 MHz*
7.000–7.300 MHz*
14.000–14.350 MHz*
21.000–21.450 MHz*
28.000–29.700 MHz*
1
* Some frequency bands are not guaranteed.
2
* Depending on version.
3
* [USA] only.
• Mode : USB, LSB, CW, RTTY, AM, FM
• Number of memory channels :
101 (99 regular, 2 scan edges)
• Antenna connector : SO-239
phono jack (RCA; 50 Ω)
• Usable temp. range : –10˚C to +50˚C (14˚F to 122˚F)
• Frequency stability : Less than ±0.5 ppm from 1 min. after
power ON. (–10˚C to +50˚C; 14˚F to 122˚F)
• Freq. resolution : 1 Hz
• Power supply requirement:
13.8 V DC ±15%
• Current drain :
Transmit max. power
Receive stand-by
max. audio
• Dimensions : 340(W)
(proj. not included) ; 3 3 ⁄
8
• Weight (approx.) : 9.6 kg (21 lb 3 oz)
• ACC 1 connector : 8-pin DIN connector
• ACC 2 connector : 7-pin DIN connector
• CI-V connector : 2-conductor 3.5(d) mm (
• Display : 5-inch (diagonal) TFT color LCD
■ TRANSMITTER
• Output power :
SSB/CW/RTTY/FM
AM
• Modulation system :
SSB PSN modulation
AM Low power modulation
FM Phase modulation
• Spurious emission : Less than –50 dB (HF bands)
Less than –60 dB (50 MHz band)
• Carrier suppression : More than 40 dB
• Unwanted sideband suppression:
More than 55 dB
• TX variable range : ±9.999 kHz
: 8-pin connector (600 Ω)
• Mic. connector
• ELE-KEY connector: 3-conductor 6.35(d) mm (
• KEY connector : 3-conductor 6.35(d) mm (
• SEND connector : Phono jack (RCA)
• ALC connector : Phono jack (RCA)
All stated specifications are subject to change without notice or obligation.

SPECIFICATIONS

, *
1 2
2
3.500–3.999 MHz*
2
10.100–10.150 MHz*
2
18.068–18.168 MHz*
2
24.890–24.990 MHz*
2
50.000–54.000 MHz*
2 (50 Ω)
×
(negative ground)
23 A
3.0 A (typical)
3.3 A (typical)
× ×
111(H) 285(D) mm
× ×
(W) 4 3 ⁄ (H) 11 7 ⁄ (D) in
8 32
1 ⁄ ")
8
5–100 W
5–40 W
1 ⁄ ")
4
1 ⁄ ")
4
■ RECEIVER
• Receive system
2
• Intermediate frequencies:
3
1st IF
2
2nd IF
2
3rd IF
2
• Sensitivity
2
SSB, CW, RTTY (at 2.4 kHz bandwidth)
1.8–29.99 MHz*
50.0–54.0 MHz*
AM (at 6.0 kHz bandwidth)
0.5–1.799 MHz
1.8–29.99 MHz*
50.0–54.0 MHz*
FM (at 15 kHz bandwidth)
28.0–29.99 MHz*
50.0–54.0 MHz*
1
* Pre-amp 1 ON *
• Squelch sensitivity : (Pre-amp OFF)
SSB/CW/RTTY
FM
• Selectivity
SSB/RTTY (at 2.4 kHz bandwidth)
CW (at 500 Hz bandwidth)
AM (at 6 kHz bandwidth)
FM (at 15 kHz bandwidth)
• Spurious and image rejection ratio:
• RIT variable range : ±9.999 kHz
• Audio output power : More than 2.0 W at 10% distortion
(at 13.8 V DC)
• PHONES connector: 3-conductor 6.35(d) mm (
• EXT SP connector : 2-conductor 3.5(d) mm (

■ ANTENNA TUNER

• Matching impedance range:
HF bands
50 MHz band
1
* Less than VSWR 3:1 *
• Minimum operating input power:
• Tuning accuracy
• Insertion loss
(after tuning)
1 - 1
: Triple-conversion
superheterodyne system
64.455 MHz
455 kHz
36 kHz
:
1
0.16 µV (10 dB S/N)
2
0.13 µV (10 dB S/N)
13 µV (10 dB S/N)
1
2.0 µV (10 dB S/N)
2
1.0 µV (10 dB S/N)
1
0.5 µV (12 dB SINAD)
2
0.32 µV (12 dB SINAD)
2
Pre-amp 2 ON
Less than 5.6 µV
Less than 1.0 µV
:
More than 2.4 kHz/–6 dB
Less than 3.6 kHz/–60 dB
More than 500 Hz/–6 dB
Less than 700 Hz/–60 dB
More than 6.0 kHz/–6 dB
Less than 15.0 kHz/–60 dB
More than 12 kHz/–6 dB
Less than 20 kHz/–60 dB
More than 70 dB
(except IF through in 50 MHz band)
with an 8 Ω load
1
16.7 to 150 Ω unbalanced*
20 to 125 Ω unbalanced*
2
Less than VSWR 2.5:1
8 W
: VSWR 1.5:1 or less
: Less than 1.0 dB
1 ⁄ ")
4
") 8 Ω
⁄
8
1
2