Icom IC-7850

Icom IC-7850 firmware

Icom · IC-7850 · IC-7850 · HF transceiver

Latest firmware for the Icom IC-7850 is v1.41 (May 15, 2024).

Specifications

IC-7850 specifications

Type
Amateur HF/VHF transceiver
Frequency range
TX: 10-160 m + WARC / 6 m (Also 137 KHz for Europe) / RX: 0.03-60 MHz
Modes
AM / FM / SSB / CW / RTTY / PSK31/63
Show the full specification

General

Mode
AM / FM / SSB / CW / RTTY / PSK31/63
Type
Amateur HF/VHF transceiver
Weight
23.5 Kg (52 lb)
Power supply
Mains: 85-265 VAC (3-pin IEC C14 connector)
Tuning steps
Down to 1 Hz
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.
Frequency range
TX: 10-160 m + WARC / 6 m (Also 137 KHz for Europe) RX: 0.03-60 MHz
Dimensions (W*H*D)
424*150*420 mm (16.69*5.91*16.54")
Frequency stability
±0.05 ppm @ 0 to 50°C (32 to 122°F)
Repeater shift / offset
±0 to 9.999 MHz in 1 KHz steps
Channels / memory management
99 regular 2 scan edge Non-volatile EEPROM storage
Antenna impedance / connector
50 ohm / Four SO-239 HF: 16.7-150 ohm with ATU on 6 m: 20-125 ohm with ATU on
Current drain / power consumption
RX: 150 VA TX: Max 800 VA

Miscellaneous

Manufactured
Japan, 2015-2015 (Discontinued)

Receiver Section

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)
Sensitivity
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)
Image rejection
Better than 70 dB
Receiver system
Double conversion superheterodyne 1st IF: 64.455 MHz (Main and sub) 2nd IF: 36 KHz
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
Spurious emissions
HF: Better than -60 dB 6 m: Better than -70 dB
Microphone input level
? mV
Max FM deviation (Factory set)
±? KHz
Microphone impedance / connector
600 ohm / 8-pin (Metal locking ring connector)

Changelog

IC-7850 firmware changelog

  1. v1.40 v1.41 Adds IC-PW2 linkage capabilities and improves All Reset operation.

  2. v1.31 v1.40 Spectrum scope scroll mode adjusts based on frequency; settings retained after updates

  3. v1.30 v1.31 Fixed Ethernet audio output issue when rebooting from Remote Standby mode

  4. v1.20 v1.30 Supports RS-BA1 Version 2, expands SSB data passband to 100-2900 Hz, improves stability.

  5. v1.13 v1.20 Added MIC+USB modulation input option and enabled RC-28 desktop dial support.

  6. v1.12 v1.13 Transmit meter indications corrected in Dual scope mode

  7. v1.11 v1.12 Spectrum scope screen enhanced.

  8. v1.10 v1.11 Improves transmit audio waveform display on the audio scope.

  9. v1.01 v1.10 Dual-band tracking and waterfall marker auto-hide added; S-meter issue fixed.

  10. v1.01 first tracked Faster audio output when switching from transmit to receive mode.

Firmware history

All versions below were published by Icom on icomjapan.com, icomamerica.com, icomeurope.com and icom.co.jp. Third-party and modified firmware is never listed.

  1. Version 1.41 Latest Released May 15, 2024 First seen Sep 6, 2026

    Adds IC-PW2 linkage capabilities and improves All Reset operation. — summary by updatemystuff.com

    Source: icomjapan.com

    Show release notes

    Changes from Version 1.40

    [Added linkage function with IC-PW2]

    • Supported for the Linked manual tuning with IC-PW2.
    • Supported for the IC-PW2 D​ual Connection Mode.
    • Supported for the IC-PW2 Transmission Interlock control.

    [Any other changes]

    • Improved the All Reset operation.

    When the [POWER] key cannot turn ON or OFF the transceiver, holding down the [F-IMP] and [MW] keys and tur​ning ON with the [I/O] key on the Rear panel instead of the [POWER] key will perform an All Reset.

    For details, please refer to "Information IC-7850/IC-7851 Version 1.41."

    Release notes & download
  2. Version 1.40 Released Apr 30, 2021 First seen Sep 7, 2026

    Spectrum scope scroll mode adjusts based on frequency; settings retained after updates — summary by updatemystuff.com

    Source: icomjapan.com

    Show release notes

    Changes from Version 1.31

    [Spectrum scope is improved]

    • A Scroll mode that can seamlessly change the displayed scope range, depending on the operating frequency, is added.

    ​

    • A popup screen that displays when SPAN or EDGE is selected is added.
    • The number of FIX EDGE memories is expanded to 4.
    • The Reference level is independently memorized for each band.
    • The Reference level of the Center mode scope screen while transmitting is fixed at set level independent of the user’s selection.
    • The Scope function of the RS-BA1 is improved.

    [Other changes]

    • The transceiver’s settings are now retained after updating the firmware. (not when reverting to an older version)
    • When the firmware is downgraded to Version 1.40 from a newer version, the transceiver's setting may​ be initialized.
    • While operating in the Data mode, the Receive Tone Control is deactivated.
    • The default setting of the CI-V USB Port is changed to “Unlink from [REMOTE].”

    Refer to INFORMATION IC-7850/IC-7851 Version 1.40 for details.

    Release notes & download
  3. Version 1.31 Released Mar 19, 2019 First seen Sep 7, 2026

    Fixed Ethernet audio output issue when rebooting from Remote Standby mode — summary by updatemystuff.com

    Source: icomjapan.com

    Show release notes

    Changes in this version

    Fixed the problem that the voice audio may not be output through the Ethe​rnet (LAN) port when rebooting the transceiver from the Remote Standby mode.

    To update the firmware

    Thoroughly read Section 10. USING AN SD CARD OR USB FLASH DRIVE and Section 17. UPDATING THE FIRMWARE of the

    INST​RUCTION MANUAL

    and follow the instructions displayed on the transceiver's LCD screen.

    BE SURE to make a backup copy of your data settings to an SD card/USB flash drive before updating the firmware.

    Release notes & download
  4. Version 1.30 Released Jul 20, 2018 First seen Sep 7, 2026

    Supports RS-BA1 Version 2, expands SSB data passband to 100-2900 Hz, improves stability. — summary by updatemystuff.com

    Source: icomjapan.com

    Show release notes

    Changes in this version

    RS-BA1 Version 2 is supported.

    A ​SET MODE item is added to expand the transmission passband width for the SSB data mode up to "100 to 2900 Hz".

    A SET MODE item is added to make the USB SEND/USB Keying function active immediately after USB port connection.

    Stability of the ALC meter is improved.

    Output signal for an external display is improved.

    Refer to IC-7850/IC-7851 Firmware Update Information Ver.1.30 for more details.

    To update the firmware

    Thoroughly read Section 10. USING AN SD ​CARD OR USB FLASH DRIVE and Section 17. UPDATING THE FIRMWARE of the

    INSTRUCTION MANUAL

    and follow the instructions displayed on the IC-7850 or the IC-7851 LCD screen.

    Release notes & download
  5. Version 1.20 Released Jan 19, 2018 First seen Sep 7, 2026

    Added MIC+USB modulation input option and enabled RC-28 desktop dial support. — summary by updatemystuff.com

    Source: icomjapan.com

    Show release notes

    Changes in this version

    A combination of [MIC] and [USB] is now selectable for t​he Modulation input connector selections in the SET MODE.

    The optional RC-28 directly connected to the IC-7850 or the IC-7851 is now usable as a desktop dial.

    To update the firmware

    Thoroughly read Section 10. USING AN SD CARD OR USB FLASH DRIVE an​d Section 17. UPDATING THE FIRMWARE of the

    INSTRUCTION MANUAL

    and follow the instructions appeared on the display of the IC-7850 or the IC-7851.

    Release notes & download
  6. Version 1.13 Released Nov 30, 2017 First seen Sep 7, 2026

    Transmit meter indications corrected in Dual scope mode — summary by updatemystuff.com

    Source: icomjapan.com

    Show release notes

    Changes in this version

    Incorrect indications on the​ transmit meters, while in the Dual scope mode, have been fixed.

    To update the firmware

    Thoroughly read Section 10. USING AN SD CARD OR USB FLASH DRIVE and Section 17. UPDATING THE FIRMWARE of t​he

    INSTRUCTION MANUAL

    and follow the instructions appeared on the display of the IC-7850 or the IC-7851.

    Release notes & download
  7. Version 1.12 Released Jun 29, 2016 First seen Sep 7, 2026

    Spectrum scope screen enhanced. — summary by updatemystuff.com

    Source: icomjapan.com

    Show release notes

    Improvement

    This firmware adds an improvement to the Spectrum scope screen.

    To update the firmware

    An SD card or an SDHC card is required.

    Format the card in the IC-7850 or IC-7851 before using it for the update. (First, save any data that is on the​ card, if necessary.)

    Unzip and save the downloaded firmware file in "IC-7850_7851" folder that is on the card.

    Save the transceiver’s data onto a separate card before doing the update. It is possible that your data gets lost or corrupted during the update. Thoroughly read Section 10 (​USING AN SD CARD OR USB MEMORY) of the Instruction Manual for details.

    Thoroughly read Section 17 (UPDATING THE FIRMWARE) of the Instruction Manual before starting the update.

    Never turn OFF the transceiver power during the update.

    Release notes & download
  8. Version 1.11 Released Sep 18, 2015 First seen Sep 7, 2026

    Improves transmit audio waveform display on the audio scope. — summary by updatemystuff.com

    Source: icomjapan.com

    Show release notes

    Improvement

    ​ The firmware update improves the transmit audio waveform display on the audio scope.

    The firmware can be updated using an SD card or USB flash drive. Thoroughly read Section 17 (UPDATING THE FIRMWARE) of the instruction manual to know what the update requires.

    Backup your transceiver’s data onto an SD card or USB flash drive as it is possible that your data could get lost or corrupted during the update. Thorough​ly read Section 10 (USING AN SD CARD OR USB FLASH DRIVE) of the instruction manual for details.

    Never turn OFF the transceiver power during the update.

    Release notes & download
  9. Version 1.10 Released Jul 17, 2015 First seen Sep 7, 2026

    Dual-band tracking and waterfall marker auto-hide added; S-meter issue fixed. — summary by updatemystuff.com

    Source: icomjapan.com

    Show release notes

    I mprovements

    A Tracking function has been added to change the Main and Sub band frequencies in the same tuning steps at the same time using the Main dial.

    A Waterfall Marke​r Auto-hide function has been added to automatically hide the marker on the Waterfall display 2 seconds after you stop it in place.

    CI-V commands for antenna controllers and the spectrum scope have been added.

    The firmware update solves a problem where the S-meter may stop operating.

    Refer to IC-7850 Firmware information - version 1.10 or IC-7851 Firmware information - version 1.10 for detai​ls.

    The firmware can be updated using an SD card or USB flash drive. Thoroughly read Section 17 (UPDATING THE FIRMWARE) of the instruction manual to know what the update requires.

    Backup your transceiver's data onto an SD card or USB flash drive as it is possible that your data could get lost or corrupted during the update. Thoroughly read Section 10 (USING AN SD CARD OR USB FLASH DRIVE) of the instruction manual for details.

    Never turn OFF the transceiver power during the update.

    Release notes & download
  10. Version 1.01 Released Mar 25, 2015 First seen Sep 7, 2026

    Faster audio output when switching from transmit to receive mode. — summary by updatemystuff.com

    Source: icomjapan.com

    Show release notes

    Improvement

    The firmware update improves DSP processing to reduce the time to output received audio after the transceiver is switched from t​ransmit to receive with the squelch OFF.

    (Including audio data output to the S/P DIF, LAN and USB connectors.)

    The firmware can be updated using an SD card or USB flash drive. Thoroughly read Section 17 (UPDATING THE FIRMWARE) of the instruction manual to know what the update requires.

    Backup your transceiver's data onto an SD card or USB flash drive as it is possible that your data could​ get lost or corrupted during the update. Thoroughly read Section 10 (USING AN SD CARD OR USB FLASH DRIVE) of the instruction manual for details.

    Never turn OFF the transceiver power during the update.

    Release notes & download

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