H9H9 ToolboxTD-H9 PROGRAMMER
Disconnected
DIRECT TO RADIO · NO ODMASTER ACCOUNT

H9 Toolbox.
Your radio, your way.

Connect over Bluetooth, read your radio, and edit channels and settings. You can save a full backup at any time. Radio data stays in your browser; visits and site interactions on h9toolbox.com are measured with Google Analytics.

View GitHub repository ↗
01

Connect to your TD-H9

Chrome or Edge · HTTPS

Turn on the radio’s Bluetooth programming mode, then choose it from the browser’s device list.

Bluetooth options

The browser can only inspect services listed before you choose a device. If your radio uses another service, enter its UUID and reconnect.

02

Read & back up

No image

Read the radio before editing. Saving an untouched backup is recommended so you can recover your original configuration.

Copies the complete radio image into this browser. Reading does not change the radio.
Optionally downloads the untouched radio image so you can restore your original configuration later.
Open a full .img backup or an H9 Toolbox JSON file. A config JSON needs a radio read or .img loaded first; a lossless archive can open by itself.
More file options
Readable channels and settings for sharing or editing. It includes stored callsigns and relay passwords, but not the full radio image.
Downloads the image with your current edits. Keep the original .img separately for recovery.
A complete JSON archive with raw memory bytes. It can recreate the original .img without a separate backup; older memoryBlocks files still open.

No radio image loaded.

03

Channels

0 loaded

Create, edit, and remove memory channels. Changes stay in the image until you write them to the radio.

CSV includes every editable channel option. Import merges by channel number; Replace all also clears occupied slots missing from the file after confirmation. Older channel JSON exports can still be opened.

CHNameRX MHzTX MHzModeTonesPowerScan
Read from the radio or open a backup to see channels.
04

Radio settings

0 loaded

Inspect and edit documented radio, Bluetooth, GNSS, and APRS options from the full backup. Open a group to see its controls. Unknown values remain unchanged unless you select a new value.

Read from the radio or open a backup to inspect its settings.

Fixed GNSS coordinates, stored DTMF codes, FM broadcast presets, and undocumented firmware bytes remain in the backup and are not edited here. Changing APRS beacon or relay options can cause transmissions; review those values before writing.

05

Write changes

No changes

Only changed 32-byte blocks are sent. Before each write, the app checks that the radio still matches the original image, then reads the block back.