Icom IC-705

Icom IC-705 firmware

Icom · IC-705 · IC-705 · HF transceiver

Latest firmware for the Icom IC-705 is v1.40 (August 21, 2025).

Specifications

IC-705 specifications

Type
Amateur HF/VHF/UHF transceiver
Frequency range
TX: 10-160 m + WARC / 6 m / 2 m / 70 cm / RX: 0.03-200 / 400-470 MHz
Modes
TX: AM / FM / SSB / CW / RTTY / DV (D-Star) / RX: AM / FM / WFM / SSB / CW / RTTY / DV (D-Star)
Show the full specification

General

Mode
TX: AM / FM / SSB / CW / RTTY / DV (D-Star) RX: AM / FM / WFM / SSB / CW / RTTY / DV (D-Star)
Type
Amateur HF/VHF/UHF transceiver
Weight
1.1 Kg (2.4 lb), with BP-272
Power supply
7.4 VDC (BP-272 or BP-307 Li-Ion battery) or 13.8 VDC ±15% external (
Tuning steps
1 / 10 / 100 / 500 Hz 1 / 5 / 6.25 / 8.33 / 9 / 10 / 12.5 / 20 / 25 / 50 / 100 KHz
Other features
4.3" touch screen color display. Spectrum scope and waterfall. Micro SD card slot. Voice recorder. Built-in Bluetooth, WLAN and GPS (with logger). Picture mode.
Frequency range
TX: 10-160 m + WARC / 6 m / 2 m / 70 cm RX: 0.03-200 / 400-470 MHz
Dimensions (W*H*D)
200*84*82 mm (7.9*3.3*3.2")
Frequency stability
±0.5 ppm @ -10° to +60°C (14° to 140°F)
Channels / memory management
500 regular 25 scan edge pairs 4 call Non-volatile EEPROM storage
Antenna impedance / connector
50 ohm / BNC
Current drain / power consumption
RX: 400-700 mA @ 7.4 VDC RX: 260-320 mA @ 13.8 VDC TX: Max 2.5 A @ 7.4 VDC TX: Max 3 A @ 13.8 VDC

Miscellaneous

Manufactured
Japan, 2020-202x

Receiver Section

Image rejection
HF/6 m: 70 dB 2 m/70 cm: 54 dB
Receiver system
Below 25 MHz: RF direct sampling Above 25 MHz: Down conversion IF sampling IF: 38.85 MHz ±500 KHz
Sensitivity (Preamp on)
AM (10 dB S/N) 0.5-1.8 MHz: 13 uV 1.8-30 MHz: 2 uV 50-54 MHz: 1 uV 2 m/70 cm: 1 uV FM (12 dB SINAD) 28-30 MHz: 0.5 uV 50-54 MHz: 0.25 uV 2 m/70 cm: 0.18 uV SSB/CW (10 dB S/N) 1.8-30 MHz: 0.2 uV 50-54 MHz: 0.15 uV 2 m/70 cm: 0.11 uV DV/D-STAR (1% BER) 28-30 MHz: 1 uV 50-54 MHz: 0.63 uV 2 m/70 cm: 0.35 uV
AF output power / speaker
530 mW at 10% distortion / 12 ohm
External speaker connector
3.5 mm, 3-conductor
Selectivity (with filter set to SHARP)
AM (BW: 6 KHz) 6 KHz (-6 dB) 10 KHz (-40 dB) FM (BW: 15 KHz) 12 KHz (-6 dB) 20 KHz (-40 dB) SSB (BW: 2.4 KHz) 2.4 KHz (-6 dB) 3.4 KHz (-40 dB) CW (BW: 500 Hz) 500 Hz (-6 dB) 700 Hz (-40 dB) RTTY (BW: 500 Hz) 500 Hz (-6 dB) 800 Hz (-40 dB) DV/D-STAR (12.5 KHz spacing) -50 dB

Transmitter Section

RF output power
Up to 5 W with BP-272 or BP-307 battery pack Up to 10 W @ 13.8 VDC external power
Modulation system
AM: Digital low power FM: Digital phase SSB: Digital PSN DV: GMSK digital phase
Spurious emissions
HF: Better than -50 dB VHF/UHF: Better than -60 dB
Microphone input level
? mV
Max FM deviation (Factory set)
FM: ±5 KHz NFM: ±2.5 KHz
Microphone impedance / connector
? ohm / 4-conductor (2.5 mm)

Changelog

IC-705 firmware changelog

  1. v1.32 v1.40 Repeater search and picture sharing enhanced; now supports microSDXC cards up to 256GB.

  2. v1.31 v1.32 Adds DV Repeater Monitor function and improves call sign setting flexibility.

  3. v1.30 v1.31

  4. v1.27 v1.30 Adds receiving/transmitting route indicators to multiple screens and enables WLAN access point deletion.

  5. v1.26 v1.27 Enables forced all reset by key combination when connecting power if power button fails.

  6. v1.24 v1.26 Preserves settings and memories on update; Spectrum scope Center mode REF level fixed

  7. v1.20 v1.24 Adds support for 64-digit hexadecimal WPA/WPA2 passwords and improves the RS-BA1 Scope function.

  8. v1.12 v1.20 Spectrum scope scroll mode, FT8 presets, antenna tuner support, and expanded memory.

  9. v1.11 v1.12 Added battery pack selection settings to optimize battery status indicator for BP-272 and BP-307.

  10. v1.10 v1.11 Battery indicator accuracy improved with red low-battery warning; fixed freezing when powering off.

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 1.40 Latest Released Aug 21, 2025 First seen Sep 6, 2026

    Repeater search and picture sharing enhanced; now supports microSDXC cards up to 256GB. — summary by updatemystuff.com

    Source: icomjapan.com

    Show release notes

    Changes from Version 1.32

    -Improved the importing repeater list.

    Supported importing repeater list while retaining the existing order.

    -Added the abili​ty to select other near repeaters using the dial after entering an access repeater using the Near Repeater Search function on the DR screen.

    -Improved the Share Pictures function.

    -Added the percentage display for the picture data received.

    -Added the visibility of the received block.

    -Improved so that a beep sounds after finishing the transmission using the DV Fast Data function.

    -Added an option for the Digital Repeater Set function.

    -Changed the display unit “m” from less than 1 km to less than 10 km on scree​ns that display distance, such as the GPS position screen.

    -Supported for microSDXC cards up to 256GB

    Formatting on the transceiver is required.

    Release notes & download
  2. Version 1.32 Released Dec 22, 2022 First seen Sep 7, 2026

    Adds DV Repeater Monitor function and improves call sign setting flexibility. — summary by updatemystuff.com

    Source: icomjapan.com

    Show release notes

    Changes from Version 1.31

    • Added the DV Repeater Monitor function. (You can c​onnect to a DPlus-compatible repeater.）When monitoring the Destination repeater selected in “TO,” it is necessary to read the Connection IP Address List file.

    You can download the Connection IP Address List sample file from here .

    -Improved the ​Terminal/AP Call sign setting of the DV GATEWAY screen can be registered call signs where the seventh character is not blank.

    Release notes & download
  3. Version 1.31 Released Oct 25, 2022 First seen Sep 7, 2026

    Source: icomjapan.com

    Show release notes

    Changes from Version 1.30

    • Improv​ed that the RX popup in the DV mode does not automatically disap​pear when you open or close the Multi-function menu.
    Release notes & download
  4. Version 1.30 Released Oct 13, 2022 First seen Sep 7, 2026

    Adds receiving/transmitting route indicators to multiple screens and enables WLAN access point deletion. — summary by updatemystuff.com

    Source: icomjapan.com

    Show release notes

    Changes from Version 1.27

    • Displays the Receiving (or Transmitting) route icon (RF or TM: Terminal mode) on the RX History Log and QSO Log
    • Display​s the Receiving (or Transmitting) route icon (RF or TM: Terminal mode) to the chunk information in the QSO audio file
    • Displays the Receiving route icon (TM: Terminal mode) to the following screens;

    RX HISTORY screen

    GPS POSITION (RX) screen

    QSO audio, PLAY FILES screen

    QSO audio, FILE INFORMATION screen

    • Improves the​ WLAN access point list so that you can delete the connected or saved access points
    • Improves the CI-V command 1F 01 (DV transmit call sign) so you can set only the “UR” call sign without the other call signs.
    Release notes & download
  5. Version 1.27 Released May 20, 2022 First seen Sep 7, 2026

    Enables forced all reset by key combination when connecting power if power button fails. — summary by updatemystuff.com

    Source: icomjapan.com

    Show release notes

    Changes from Version 1.26

    Improved to enable forcing an All Reset by connecting an external​ power source (*) while holding down [RIT/ΔTX] and [XFC], even if you cannot turn ON/OFF the transceiver by using the [POWER] key.​

    • First, disconnect any external power supply, battery pack, and USB cable, and then reconnect any one of them.
    Release notes & download
  6. Version 1.26 Released Jul 9, 2021 First seen Sep 7, 2026

    Preserves settings and memories on update; Spectrum scope Center mode REF level fixed — summary by updatemystuff.com

    Source: icomjapan.com

    Show release notes

    Changes from Ve​rsion 1.24

    • When in the Center mode of the Spectrum scope screen, the REF level setting does not reflect the scope waveform during transmission.
    • This firmware update version 1.26 has been improved, so it will not reset settings and memo​ries.

    If the firmware is updated from version 1.24 or earlier, the settings and memories are not reset.

    However, if the firmware is reverted to 1.26 from a later version (after 1.26), the settings and memories may be reset.

    Release notes & download
  7. Version 1.24 Released Mar 5, 2021 First seen Sep 7, 2026

    Adds support for 64-digit hexadecimal WPA/WPA2 passwords and improves the RS-BA1 Scope function. — summary by updatemystuff.com

    Source: icomjapan.com

    Show release notes

    Changes from Version 1.20

    • Improved the Scope function of the RS-BA1.
    • Supports a 64-digi​t hexadecimal format WPA/WPA2 Password.

    The compatible programming software for this firm​ware can be downloaded here .

    The software update for the compatible RS-BA1 can be downloaded here .

    Release notes & download
  8. Version 1.20 Released Jan 22, 2021 First seen Sep 7, 2026

    Spectrum scope scroll mode, FT8 presets, antenna tuner support, and expanded memory. — summary by updatemystuff.com

    Source: icomjapan.com

    Show release notes

    Changes from Version 1.12

    [Spectrum scope is improved]

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

    • A popup screen that displays when SPAN or EDGE change is added.
    • The number of FIX EDGE memories is expanded to 4.

    [Preset function is added for FT8 operation]

    -A Preset function that can set each operation is added.

    NOTE

    The default settings for the Preset function are for FT8 operation. If your digital software does not support the IC-705, change to an Icom transceiver’s CI-V address that the soft​ware supports.

    For example, when selecting the IC-9700 in the software, set the CI-V address in the IC-705 to A2, which is the IC-9700’s CI-V address.

    [The AH-705 automatic antenna tuner can be used]

    -An antenna tuner selecting item is added in the Set mode.

    • A Tune Memory setting and a Tune Memory Clear functions are added.

    -When [TUNER] on the FUNCTION screen is touched, tuning starts.

    [Other changes]

    -A WLAN Access Point mode is added.

    -A Front Key Customization function that can change the function of [VOX/BK-IN] and [AUTOTUNE/RX>CS] is added.

    -[TUNER] is added to the Remote MIC key function.

    • You can set 2 voice memories (T1 and T2) and 2 keyer memories (M1 and M2) in IC-705 firmware Version 1.12.

    In firmware Version 1.2, the number of Voice memories, Keyer memories, and RTTY memories is increased to 4 in each mode.

    Each bank of memories is automatically selected, according to the operating mode. For example, when operating in the SSB mode, the Voice memory bank is automatically selected.

    • The "ddd.dddd˚" format is added for the Latitude/Longitude display.
    • While operating in the Data mode, the receive tone control is deactivated.

    -A menu item that can return to the normal mode is added to the QUICK MEN​U of Terminal Mode and Access Point Mode.

    • Improves the saving of the Battery Pack Confirmation setting.

    NOTE

    When the firmware is updated, the battery pack selection returns to the default setting (OFF).

    Refer to INFORMATION IC-705 Version 1.20 for details.

    The compatible programming software for firmware update Version 1.20 can be downloaded here .

    The Scroll mode for the RS-BA1 Version 2 software will be added to Version 2.30.

    Release notes & download
  9. Version 1.12 Released Sep 18, 2020 First seen Sep 7, 2026

    Added battery pack selection settings to optimize battery status indicator for BP-272 and BP-307. — summary by updatemystuff.com

    Source: icomjapan.com

    Show release notes

    Changes from Version​ 1.11

    Setting items related to battery pack selection are added to optimize the battery status indicator (Battery icon) for the sta​ndard BP-272, and the optional BP-307 large capacity battery pack.

    Refer to INFORMATION IC-705 Version 1.12 for details.

    Release notes & download
  10. Version 1.11 Released Aug 28, 2020 First seen Sep 7, 2026

    Battery indicator accuracy improved with red low-battery warning; fixed freezing when powering off. — summary by updatemystuff.com

    Source: icomjapan.com

    Show release notes

    Changes from Version 1.10

    Improved the accuracy of the battery statu​s indicator (Battery icon).

    Added a red-colored battery icon to remind the user to change the battery.

    Fixed an issue where the transceiver​ might freeze while powering OFF.

    Refer to INFORMATION IC-705 Version 1.11 for details.

    Release notes & download
  11. Version 1.10 Released Jul 31, 2020 First seen Sep 7, 2026

    Source: icomjapan.com

    Show release notes

    This is the first release.

    Release notes & download

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