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Icom IC-7800 Manual

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15-3
DD
Receiver
• Receive system : Double conversion superheterodyne system
• Intermediate frequencies :
1st 64.455 MHz (MAIN band)
64.555 MHz (SUB band)
2nd 36 kHz
• Sensitivity :
SSB, CW, RTTY (BW=2.4 kHz, 10 dB S/N)
0.100–1.799 MHz 0.5 µV (pre-amp 1 ON)
1.800–29.990 MHz 0.16 µV (pre-amp 1 ON)
50.000–54.000 MHz 0.13 µV
(pre-amp 2 ON)
AM (BW=6 kHz, 10 dB S/N)
0.100–1.799 MHz 6.3 µV
(pre-amp 1 ON)
1.800–29.990 MHz 2 µV (pre-amp 1 ON)
50.000–54.000 MHz 1 µV (pre-amp 2 ON)
FM (BW=15 kHz, 12 dB SINAD)
28.000–29.990 MHz 0.5 µV (pre-amp 1 ON)
50.000–54.000 MHz 0.32 µV (pre-amp 2 ON)
• 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/–3 dB
Less than 20.0 kHz/–60 dB
• Spurious and image rejection ratio : More than 70 dB
(except IF through on 50 MHz band)
• Squelch sensitivity :
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×2 (for main and
sub)
DD
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 : 8W (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 malfunction
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.
• 0.150 MHz • 10.490 MHz
All stated specifications are typical and subject to change without notice or obligation.
… 192 …


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