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Last modified 2024-05-20

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IC-7851

A picture of IC-7851

SPECIFICATIONS

GENERAL
Type:Amateur HF/VHF transceiver
Frequency range: TX: 10-160 m + WARC / 6 m (Also 137 KHz for Europe)
RX: 0.03-60 MHz
Tuning steps:Down to 1 Hz
Frequency stability:±0.05 ppm @ 0 to 50°C (32 to 122°F)
Mode:AM / FM / SSB / CW / RTTY / PSK31/63
Channels/memory management: 99 regular
2 scan edge
Non-volatile EEPROM storage
Repeater shift / offset:±0 to 9.999 MHz in 1 KHz steps
Power supply:Mains: 85-265 VAC (3-pin IEC C14 connector)
Current drain/power consumption:RX: 150 VA
TX: Max 800 VA
Antenna impedance / connector:50 ohm / Four SO-239
HF: 16.7-150 ohm with ATU on
6 m: 20-125 ohm with ATU on
Dimensions (W*H*D):424*150*420 mm (16.69*5.91*16.54")
Weight:23.5 Kg (52 lb)
Other features: Four 32 bit DSP's. RTTY/PSK31 encoder/decoder. Auto-AT. USB-connector.
7" color TFT with DVI output. Twin RX. Spectrum scope. Digital voice recorder
RS-232C. Built-in voice synthesizer. Compact Flash card for storing personal settings.
CTCSS/PL with tone scan.




RECEIVER SECTION
Receiver system: Double conversion superheterodyne
1st IF: 64.455 MHz (Main and sub)
2nd IF: 36 KHz
Sensitivity:

General market

AM (10 dB S/N. BW=6 KHz)
0.1-1.8 MHz: 6.3 uV (Preamp 1 on)
1.8-30 MHz: 2 uV (Preamp 1 on)
50-54 MHz: 1 uV (Preamp 2 on)
FM (12 dB SINAD. BW=15 KHz)
28-29.7 MHz: 0.5 uV (Preamp 1 on)
50-54 MHz: 0.32 uV (Preamp 2 on)
SSB/CW/RTTY/PSK (10 dB S/N. BW=2.4 KHz)
0.1-1.8 MHz: 0.5 uV (Preamp 1 on)
1.8-30 MHz: 0.16 uV (Preamp 1 on)
50-54 MHz: 0.13 uV (Preamp 2 on)

European market

AM (12 dB SINAD. BW=4 KHz)
1.8-3 MHz: 16 dBuV emf (Preamp 1 on)
3-30 MHz: 6 dBuV emf (Preamp 1 on)
50-54 MHz: 0 dBuV emf (Preamp 2 on)
FM (12 dB SINAD. BW=7 KHz)
28-29.7 MHz: 0 dBuV emf (Preamp 1 on)
50-54 MHz: -6 dBuV emf (Preamp 2 on)
SSB/CW/RTTY/PSK (12 dB SINAD. BW=2.4 KHz)
1.8-3 MHz: 10 dBuV emf (Preamp 1 on)
3-30 MHz: 0 dBuV emf (Preamp 1 on)
50-54 MHz: -6 dBuV emf (Preamp 2 on)
Selectivity: AM (BW: 6 KHz)
6 KHz (-3 dB)
15 KHz (-60 dB)
FM (BW: 15 KHz)
12 KHz (-6 dB)
20 KHz (-60 dB)
SSB/RTTY (BW: 2.4 KHz)
2.4 KHz (-3 dB)
3.6 KHz (-60 dB)
CW/RTTY/PSK (BW: 500 Hz)
500 Hz (-3 dB)
700 Hz (-60 dB)
Image rejection:Better than 70 dB
AF output power / speaker:2.6 W at 10% distortion / 8 ohm
External speaker connector:3.5 mm




TRANSMITTER SECTION
RF output power:

Pwr
AM:5-50 W
FM:5-200 W
SSB (PEP):5-200 W
CW/RTTY:5-200 W
PSK:5-200 W

137 KHz: More than -20 dBm (European version only)

100% duty cycle!
Modulation system: AM: Low power modulation
FM: Phase modulation
SSB: PSN modulation
Max FM deviation (Factory set):±? KHz
Spurious emissions:HF: Better than -60 dB
6 m: Better than -70 dB
Microphone impedance / connector:600 ohm / 8-pin (Metal locking ring connector)
Microphone input level:? mV




MISCELLANEOUS
Manufactured:Japan, 2015-2024 (Discontinued)
Additional info:
Related documents:User manual (15 MB)
Modifications and fixes:
Reviews:
Options / Accessories:
CT-17
HM-36
IC-PW1/Euro
RC-28
RS-BA1
SM-30
SM-50
SP-33
SP-34
CI-V level converter
Standard hand microphone
1 KW linear amplifier
Remote encoder
IP remote control software
Desk microphone with low cut and gain control
Desk microphone with low cut and gain control
External speaker. 5 W, 8 ohm
External speaker with filters. 5 W, 8 ohm