Icom IC-7700, Инструкция по эксплуатации

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15-3
D Receiver
• Receive system : Double conversion superheterodyne system
• Intermediate frequencies :
1st 64.455 MHz
2nd 36 kHz
• Sensitivity (typical) :
SSB, CW, RTTY (BW=2.4 kHz, 10 dB S/N)
0.100000– 1.799999 MHz 0.5 µV
(Preamp 1 ON)
1.800000– 29.990000 MHz 0.16 µV
(Preamp 1 ON)
50.000000– 54.000000 MHz 0.13 µV
(Preamp 2 ON)
AM (BW=6 kHz, 10 dB S/N)
0.100000– 1.799999 MHz 6.3 µV
(Preamp 1 ON)
1.800000– 29.990000 MHz 2 µV
(Preamp 1 ON)
50.000000– 54.000000 MHz 1 µV
(Preamp 2 ON)
FM (BW=15 kHz, 12 dB SINAD)
28.000000– 29.990000 MHz 0.5 µV
(Preamp 1 ON)
50.000000– 54.000000 MHz 0.32 µV
(Preamp 2 ON)
• Internal Modulate Distortion (typical) : Dynamic range 109 dB
(at 14.100 MHz, 100 kHz separation,
Preamp OFF, CW mode; BW=500 Hz)
• Selectivity :
SSB, RTTY (BW=2.4 kHz) More than 2.4 kHz/–3 dB
Less than 3.6 kHz/–60 dB
CW (BW=500 Hz) More than 500 Hz/–3 dB
Less than 700 Hz/–60 dB
AM (BW=6 kHz) More than 6.0 kHz/–3 dB
Less than 15.0 kHz/–60 dB
FM (BW=15 kHz) More than 12.0 kHz/–6 dB
Less than 20.0 kHz/–60 dB
• Spurious and image rejection ratio :
More than 70 dB
• Squelch sensitivity (Preamp OFF) :
SSB, CW, RTTY, PSK31 Less than 5.6 µV
FM Less than 1 µV
• RIT variable range :
±9.999 kHz
• Audio output power : More than 2.6 W
at 10% distortion with an 8
Ω
load
• PHONES connector : 3-conductor 6.35 (d) mm (
1
⁄
4
″
)
• EXT-SP connectors :
2-conductor 3.5 (d) mm ( 1 ⁄
8
″
)/8
Ω
D Antenna tuner
• Matching impedance range : 16.7 to 150
Ω
unbalanced
(HF bands; VSWR better than 3:1)
20 to 125
Ω
unbalanced
(50 MHz band; VSWR better than
2.5:1)
• Minimum operating input :
8 W
(HF bands)
15 W
(50 MHz band)
• Tuning accuracy : VSWR 1.5:1 or less
• Insertion loss
(after tuning)
:
Less than 1.0 dB
15
SPECIFICATIONS AND OPTIONS
* The LCD display may have cosmetic imperfections that appear as small or dark spots. This is not a malfunc-
tion or defect, but a normal characteristic of LCD displays.
Spurious signals may be received near the following frequencies. These are made in the internal circuit and
does not indicate a transceiver malfunction.
• 0.15 MHz • 0.23 MHz 0.31 MHz • 10 MHz
Spurious signals may be displayed on the spectrum scope screen regardless of the transceiver’s state (Tx or
Rx). They are generated in the scope circuit. This does not indicate a transceiver malfunction.
All stated specifications are typical and subject to change without notice or obligation.