IC-7851 Specifications | The Transceiver

GENERAL

Frequency coverage^*1

	U.S.A. Version	Europe Version
Receiver	0.030–60.000MHz^*2	0.030–60.000MHz^*2
Transmit	1.800–1.999MHz 3.500–3.999MHz 5.255–5.405MHz^*2 7.000–7.300MHz 10.100–10.150MHz 14.000–14.350MHz 18.068–18.168MHz 21.000–21.450MHz 24.890–24.990MHz 28.000–29.700MHz 50.000–54.000MHz	0.1357–0.1378MHz 1.810–1.999MHz 3.500–3.800MHz 7.000–7.200MHz 10.100–10.150MHz 14.000–14.350MHz 18.068–18.168MHz 21.000–21.450MHz 24.890–24.990MHz 28.000–29.700MHz 50.000–52.000MHz

^*1 Varies according to version.
^*2 Some frequency bands are not guaranteed.

Mode

USB, LSB, CW, RTTY, PSK31/63, AM, FM

No. of memory channels

101 (99 regular, 2 scan edges)

Antenna connector

SO-239×4 and BNC×2 (50Ω unbalanced (Tuner off))

Operating temp. range

0°C to +50°C; +32°F to +122°F

Frequency stability

Less than ±0.05ppm (0°C to +50°C @ 54MHz, after warm up)

Frequency resolution

1Hz (minimum)

Power supply requirement

85–265V AC

Current drain

TX: 800VA (Max. power)
RX: 130VA/120VA typ. (Max. audio/standby)

Dimensions (W×H×D,
projections not included)

425×149×435 mm; 16.73×5.87×17.13 in

Weight (approximate)

23.5 kg; 51.8 lb

Output power	SSB/CW/FM/RTTY/PSK: 5–200W AM: 5–50W Transverter connector (CW): More than –20dBm
Modulation system	SSB : Digital P.S.N. modulation AM : Digital low power modulation FM : Digital phase modulation
Spurious emissions	HF bands: More than 60dB, 50MHz band: More than 70dB
Carrier suppression	More than 63dB
Unwanted sideband suppression	More than 70dB
⊿TX variable range Microphone impedance	±9.999kHz
Microphone impedance	600? (8-pin connector)

Receive system	Double conversion super-heterodyne system
Intermediate frequencies	Main receiver: 64.455MHz/36kHz (1st/2nd) Sub receiver: 64.555MHz/36kHz (1st/2nd)
Sensitivity (typical) (HF: Pre-amp 1 ON, 50MHz: Pre-amp 2 ON)	SSB, CW, RTTY, PSK (BW=2.4kHz, at 10dB S/N) 0.1MHz?1.7999MHz?0.5?V 1.8MHz?29.990MHz?0.16?V 50MHz?54MHz????0.13?V AM (BW=6kHz, at 10dB S/N) 0.1MHz?1.7999MHz?6.3?V 1.8MHz?29.990MHz?2?V 50MHz?54MHz????1?V FM (BW=15kHz, at 12dB SINAD) 1.8MHz?29.990MHz?0.5?V (28–29.9MHz) 50MHz?54MHz?0.32?V
Squelch sensitivity	SSB, CW, RTTY, PSK: Less than 5.6?V (Pre-amp: OFF) FM: Less than 1?V (Pre-amp: OFF)
Selectivity	SSB (BW=2.4kHz, sharp)?2.4kHz/-3dB?3.6kHz/-60dB CW/RTTY/PSK (BW=500Hz, sharp)?500Hz/-3dB?700Hz/-60dB AM(BW=6kHz)?6.0kHz/-3dB?15kHz/-60dB FM(BW=15kHz)?12kHz/-6dB?20kHz/-60dB
Spurious and image rejection ratio	More than 70dB
Audio output power	More than 2.6W (10% distortion, 8? load)
RIT variable range	±9.999kHz

Matching impedance range	HF bands: 16.7? to 150? unbalanced (VSWR better than 3:1) 50MHz: 20? to 125? unbalanced (VSWR better than 2.5:1)
Minimum operating power	HF bands: 8W, 50MHz band: 15W
Tuning accuracy	VSWR 1.5:1 or less
Insertion loss	Less than 1.0 dB (after tuning)

● Rack mount handles
● SD card
● AC power cable
● Spare fuses
● Plugs