Icom IC-7700 - Receiver Specifications; Antenna Tuner and Minimum Input

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.