Kenwood TH-D75

Kenwood TH-D75 firmware

Kenwood · TH-D75 · TH-D75 · Handheld

Latest firmware for the Kenwood TH-D75 is v1.03 (May 31, 2024).

Specifications

TH-D75 specifications

Figures for the TH-D75A.

Type
Amateur VHF/UHF transceiver
Frequency range
USA / TX: 144-148 / 222-225 / 430-450 MHz / RX: 0.1-524 MHz
Modes
TX: FM / NFM / DV (D-Star) / RX: AM / FM / NFM / WFM / SSB / CW / DV (D-Star)
Show the full specification

General

Mode
TX: FM / NFM / DV (D-Star) RX: AM / FM / NFM / WFM / SSB / CW / DV (D-Star)
Type
Amateur VHF/UHF transceiver
Weight
346 g (12.2 oz), with KNB-75LA, antenna and belt clip
Power supply
6-9.6 VDC (Battery pack) or 11-15.9 VDC external
Tuning steps
Standard steps: 5 / 6.25 / 8.33 / 9 / 10 / 12.5 / 15 / 20 / 25 / 30 / 50 / 100 KHz Fine tuning: 20 / 100 / 500 / 1000 Hz (Band B, AM/SSB/CW only)
Other features
CTCSS/PL. DCS. Micro-SD card. Built-in GPS and APRS with digipeater. Built-in bar entenna for 0.1-10 MHz RX. Color TFT. Weather alert. Audio equalizer. Hi-performance DSP. Clock. Bluetooth 3.0 class 2. Backlit keyboard. USB-C connector. D-Star reflector terminal mode. IP54/55 compliant.
Frequency range
USA TX: 144-148 / 222-225 / 430-450 MHz RX: 0.1-524 MHz
Dimensions (W*H*D)
56*122*33 mm (2.2*4.8*1.28"), with KNB-75LA
Frequency stability
±2 ppm @ -10 to +50°C (14 to 122°F)
Repeater shift / offset
±0 to 29.95 MHz in 50 KHz steps
Channels / memory management
1000 regular in 30 groups with alpha tags 100 program scan 1 priority Non-volatile storage
Antenna impedance / connector
50 ohm / SMA
Current drain / power consumption
RX: 50-310 mA TX: 0.4-2 A @ 7.4 VDC

Miscellaneous

Manufactured
2023-202x

Receiver Section

Selectivity
FM: 12 KHz (-6 dB) 30 KHz (-50 dB)
Sensitivity
AM (10 dB S/N) 0.3-0.52 MHz: 4 uV 0.52-1.8 MHz: 1.59 uV 1.8-54 MHz: 0.63 uV 54-76 MHz: 1.12 uV 118-174 MHz: 0.5 uV 200-250 MHz: 0.63 uV 382-412 MHz: 1.12 uV 415-524 MHz: 1.12 uV FM (12 dB SINAD) 28-54 MHz: 0.32 uV 54-76 MHz: 0.56 uV 118-144 MHz: 0.36 uV 144-148 MHz: 0.18 uV (Band A), 0.19 uV (Band B) 148-175 MHz: 0.36 uV 200-222 MHz: 0.36 uV 222-225 MHz: 0.18 uV (Band A), 0.2 uV (Band B) 225-250 MHz: 0.36 uV 382-400 MHz: 0.5 uV 400-412 MHz: 0.36 uV 415-430 MHz: 0.36 uV 430-450 MHz: 0.18 uV (Band A), 0.2 uV (Band B) 450-490 MHz: 0.36 uV 490-524 MHz: 0.63 uV NFM (12 dB SINAD) 144-148 MHz: 0.22 uV (Band A), 0.24 uV (Band B) 222-225 MHz: 0.22 uV (Band A), 0.25 uV (Band B) 430-450 MHz: 0.22 uV (Band A), 0.25 uV (Band B) WFM (12 dB SINAD) 76-95 MHz: 1.59 uV 95-108 MHz: 2 uV SSB (10 dB S/N) 1.8-54 MHz: 0.4 uV 54-76 MHz: 0.79 uV 144-148 MHz: 0.16 uV 222-225 MHz: 0.2 uV 430-450 MHz: 0.16 uV DV (PN9/GMSK, 4.8 kbps, BER 1%) 144-148 MHz: 0.22 uV 222-225 MHz: 0.22 uV 430-450 MHz: 0.22 uV
Image rejection
60 dB
Receiver system
Double conversion superheterodyne (FM / WFM / DV) 1st IF: 57.15 MHz (Band A) - 58.05 MHz (Band B) 2nd IF: 450 KHz Triple conversion superheterodyne (AM / SSB / CW) 1st IF: 57.15 MHz (Band A) - 58.05 MHz (Band B) 2nd IF: 450 KHz 3rd IF: 10.8 KHz
Squelch sensitivity
Band A 0.18 uV (Treshold) Band B 0.25 uV (Treshold)
AF output power / speaker
400 mW at 10% distortion / 8 ohm

Transmitter Section

RF output power
HighMidLowELow 2 m:5 W2 W500 mW50 mW 70 cm:5 W2 W500 mW50 mW
Modulation system
FM: Reactance modulation DV: GMSK reactance modulation
Spurious emissions
Better than -60 dBc (Hi-Mid settings)
Microphone input level
? mV
Max FM deviation (Factory set)
FM: ±5 KHz NFM: ±2.5 KHz
Microphone impedance/connector
2 Kohm / ?-pin

Changelog

TH-D75 firmware changelog

  1. v1.03 first tracked Improved battery indicator accuracy and fixed D-STAR/mode issues

Firmware history

All versions below were published by Kenwood on kenwood.com. Third-party and modified firmware is never listed.

  1. Version 1.03 Latest Released May 31, 2024 First seen Sep 6, 2026

    Improved battery indicator accuracy and fixed D-STAR/mode issues — summary by updatemystuff.com

    Source: kenwood.com

    Show release notes

    The following features are updated.

    1. Improved the accuracy of the battery level indicator.
    2. Enables setting "Gateway CQ" as a destination option in D-STAR Reflector Terminal mode, similar to DR mode, for specific gateway applications (not used for standard reflector connections).

    The following symptoms are revised.

    1. When editing the D-STAR Callsign list, a “/” (slash) cannot be set at the beginning of a callsign to designate the gateway connection repeater.
    2. The callsign of the D-STAR APRS Sentence may not be sent out correctly under certain conditions.
    3. When power is turned off in DR mode, the reverse status is incorrectly backed up.
    4. If the Hotspot List is not set (default), selecting "Edit" or "Clear" will result in a reboot.

    Notes

    • The initial shipment firmware is Version 1.02.
    • The next firmware update is planned in several months to continue refining the product.
    • Applicable models/units
    • The firmware updating program is applicable for following models/units.
    • Models: TH-D75A / TH-D75E
    • Serial numbers: From S/NO.C3Cxxxxx through S/NO.C46xxxxx approx.

    Notes

    : You can find the serial number imprinted on the rear panel after removing the battery ; it consists of an 8-digit number beginning with "S/NO." : You can check the firmware version of your TH-D75A/E by accessing Menu No.991. The firmware version appears in the LCD display. Operating Enviro​nments

    1. Operating System (OS) Windows ® 10 Windows ® 11

    Notes

    • This software is designed to run on the above operating systems.
    • Applicable operating systems are subject to change without notice due to the end of the technical support by Microsoft Corporation or change of the product specifications.
    1. Processor Faster than the recommended CPU for each OS.
    2. System Memory (RAM) Larger than the recommended System Memory for each OS.
    3. Free Hard Drive Space Larger than the recommended Free Hard Drive Space for each OS.
    4. Peripheral Devices A display with resolutions higher than VGA.(640 x 480) A keyboard and a mouse, or other pointing devices.

    USB 2.0 interface.

    Attention Before updating the firmware, it is recommended to back up the transceiver's Memory channels, Menu settings, Callsign list, and other configuration data using the Memory Control Program MCP-D75 or the export function to a microSD card (Menu No.800 or Menu No.801).

    Installing

    1. Extract the downloaded file "TH-D75_V103E.zip" into a designated folder.

    In the designated folder, a folder labeled "TH-D75_V103E" will be created.

    1. In the folder labeled "TH-D75_V103", the firmware updating program "TH-D75_V103_e.exe" and "TH-D75_e.chm" are automatically created.

    Updating

    1. Start the program by double-clicking "TH-D75_V103_e.exe" icon.
    2. Connect the transceiver's USB port to your PC's USB port using a USB (Type-C) cable, and select the COM port you will use by following the Help file.
    3. Proceed firmware updating by following the explanations in the dialog boxes.

    Uninstalling Delete the folder labeled "TH-D75_V103E" manually using the Explorer or an alternative method. Downloading Only if you agree to the following "Usage Notes", click "Agree" and download the software. (If you do not agree, you will not be able to download the software.) Usage Notes

    • Users are prohibited to assign, rent, lease, redistribute, or resell the software.
    • Users are prohibited to revise, change, translate, merge, de-compile, or reverse engineer the software.
    • The quality and performance of the software is not warranted for the applicability of any users. JVCKENWOOD Corporation shall not assume liability for any defects, nor warrant anything other than is expressly provided in the agreement. The selec​tion and introduction of the products as well as the results there from shall be upon the liability of the users.
    • JVCKENWOOD Corporation shall own all copyrights and other intellectual properties for the software and all manuals and documents attached to the software. The user shall be allowed to use, not to resell, the software by obtaining a license from JVCKENWOOD Corporation. While the media in which the software is stored is possessed by the user, the ownership for the software itself shall be reserved for JVCKENWOOD Corporation.

    TH-D75_V103E.zip : 18.4MB download TH-D75_V103E.zip : 18.4MB download Latest update: TH-D75 Firmware Update Version 1.03 (May / 2024) Windows is a registered trademark or trademark of Microsoft Corporation in the United States and other countries. Global Site

    Release notes & download

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