Icom IC 7800

Modes
LSB, USB, CW, RTTY, PSK31, AM, FM
No. of memory channels
101 (99 regular, 2 scan edges)
Antenna impedance 50 unbalanced (Tuner off)
Antenna connector SO-239 × 4 and BNC × 2
Power supply requirement 85265V AC
Operating temp. range 0 to +50°C; +32 to +122°F
Frequency stability Less than ±0.05ppm (0 to +50°C) after warm up
Frequency resolution 1Hz (minimum)
Current drain ReceiveTransmit

Stand-byMax. audioMax. power 200VA typ.210VA typ.800VA
Dimensions (WxHxD)(projections not included) 424 × 149 × 435 mm16 11/16 × 5 7/8 × 17 1/8 in Weight (approx.) 25kg; 55lbTRANSMITTER
Output power
SSB, CW, FM, RTTY, PSK31AM

5200W550W137kHz band (CW) More than .20dBm
Modulation system
SSB P.S.N modulationAM Low power modulationFM Phase modulation
Spurious emissions
More than 60dB (HF bands) More than 70dB (50MHz band)
Carrier suppression
More than 63dB
Unwanted sideband suppression
More than 80dB
Microphone impedance
600 (8-pin connector)
Tx variable range
± 9.999kHzRECEIVER
Receiver system
Double-conversion superheterodyne
Intermediate frequencies
1st 64.455MHz (Main) 64.555MHz (Sub)2nd 36kHz
Sensitivity (typical)
SSB,CW,RTTY (at 10dB S/N) 0.1MHz1.7999MHz : 0.5µV (pre-amp1:ON) 1.8MHz29.999MHz : 0.16µV (pre-amp1:ON) 50MHz54MHz : 0.13µV (pre-amp2:ON)AM (at 10dB S/N) 0.1MHz1.7999MHz : 6.3µV (pre-amp1:ON) 1.8MHz29.999MHz : 2.0µV (pre-amp1:ON) 50MHz54MHz : 1V (pre-amp2:ON)FM (at 12dB SINAD) 28MHz29.999MHz : 0.5µV (pre-amp1:ON) 50MHz54MHz : 0.32µV (pre-amp2:ON)
Squelch sensitivity (pre-amp: ON)
SSB / CW / RTTY : Less than 5.6µVFM : Less than 1µV
Selectivity (typical)
SSB (2.4kHz)CW (500Hz)RTTY, PSK31 (350Hz)AM (6kHz)FM (15kHz)

More than 2.4kHz/-3dBLess than 3.6kHz/-60dBMore than 500Hz/-3dBLess than 700Hz/-60dBMore than 360Hz/-6dBLess than 650Hz/-60dBMore than 6.0kHz/-3dBLess than 15kHz/-60dBMore than 12kHz/-6dBLess than 20kHz/-60dB
Spurious and image rejection ratio
More than 70dB
Audio output power
More than 2.6W at 10% distortion with an 8 load
Ext. SP connector
8
RIT variable range
± 9.999kHz