@OpenRtx

Free and Open Source Firmware for Digital Ham Radios Reach out on Matrix: https://xitter.cf/t.co/Q9bro1nJRa

openrtx.org
Joined March 2021
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  • Following64
  • Followers2.3K
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You can receive and transmit M17 from your MD-380 or MD-UV380. Mod your radio following this guide: openrtx.org/#/M17/m17 And install the latest OpenRTX nightly as explained here: openrtx.org/#/user_guide Let us know how it goes! 😁 @m17_project
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If you want to meet us in person and have your radio modded for M17 come find us at Ham Radio Friedichshafen. Find us at hall/stand A1-690!
Ham Radio Friedrichshafen poster with dates (June 26-28 2026).

ALT Ham Radio Friedrichshafen poster with dates (June 26-28 2026).

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For those of you who are at 39C3, tomorrow there will be an OpenRTX meetup! Come chat with Silvano IU2KWO and other OpenRTX devs and users. events.ccc.de/congress/2025/…

[39c3] OpenRTX Meetup

OpenRTX community meetup

events.ccc.de
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For those wanting to participate, OpenRTX is among the projects registered for the Hacktoberfest! finder.usmans.me/repos/c?q=O… #hamradio #foss #Hacktoberfest

Hacktoberfest Project Finder has been discontinued

Hacktoberfest no longer counts pull requests, so the Hacktoberfest Project Finder has been retired. Visit hacktoberfest.com to learn how to take part.

finder.usmans.me
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We will hold an OpenRTX hackathon at Brussels Hackerspace on Friday, January 31 just before FOSDEM. If you’re interested, let us know at: [email protected] openrtx.org/#/hackathon #FOSDEM #ham #hamradio #hacking #opensource #foss
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mastodon.radio/@k8tun/113219…
Picture of a keyboard with an OLED display showing the OpenRTX logo.

ALT Picture of a keyboard with an OLED display showing the OpenRTX logo.

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OpenRTX now supports combined spectrum + waterfall on Talkpod A36Plus thanks to @k8tun! This feature will also be ported to our other targets.
 #hamradio #foss #hacking #openrtx
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M17/@OpenRtx team leaders - Wojciech SP5WWP and Silvano IU2KWO with our Japanese friends at JARL Ham Fair 2024, Tokyo, Japan 🇯🇵 Special thanks for Yamamoto-san @JA3QWG - M17 Ambassador @IARU_R1 @IARU_R2 @IARU_R3_APAC @sylvain_azarian - see you in Paris in a few days! @ARDC_73
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OpenRTX now officially supports the Talkpod A36plus MAX, thanks to the contribution of @[email protected]! talkpod.com/blogs/blog/openr…
Picture of a Talkpod A36plus MAX handy talky, with the OpenRTX logo on the screen.

ALT Picture of a Talkpod A36plus MAX handy talky, with the OpenRTX logo on the screen.

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Ladies and gents - the Micro17, ICOM version. UT-126H replacement running @OpenRtx with M17 support. Designed by Mutlu TA1MD, @Manoel_ON6RF, Wojciech SP5WWP et al. GH: github.com/M17-Project/Micro… ^SP5WWP
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OpenRTX retweeted
LILYGO
@lilygo91 Feb 2024
T-TWR V2.1 version has been updated.
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Thanks to our community, OpenRTX is coming to the Radtel RT-890! This is an incredibly affordable radio that is ready to be modded. mastodon.radio/@k8tun #hamradio #foss ALT: Video clip showing a Radtel RT-890 handheld radio that displays OpenRTX boot screen.
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Replying to @m17_project @OpenRtx @goodgame_K5ATA @RF2Space @ailunce
Thanks for tagging us. Our engineering team is aware of the project and they are evaluating.
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Almost one year after the latest release, we just tagged OpenRTX v0.3.6 🎉, including full support for @m17_project, Module17 and @lilygo9 TTWR Plus! Check it out here: github.com/OpenRTX/OpenRTX/r…
Screenshot of the changelog from GitHub for the v0.3.6, below the content: M17: implemented transmission of the EOT frame before closing a transmission. M17: showing stream info on screen during reception. M17: implemented check for CAN match in RX. Set up a dedicated UI for Module17. Added support for Module17 hardware revision 0.1e. Reorganized the audio path and audio stream subsystem. Corrected the conversion law for volume level in MDx devices. Added transmission of 1750Hz squelch tone to MDx and GDx. Added icons to UI. Added screen lock to radio UI. Support for a new target: Lilygo TTWR-plus. Bugfix and improvements.

ALT Screenshot of the changelog from GitHub for the v0.3.6, below the content: M17: implemented transmission of the EOT frame before closing a transmission. M17: showing stream info on screen during reception. M17: implemented check for CAN match in RX. Set up a dedicated UI for Module17. Added support for Module17 hardware revision 0.1e. Reorganized the audio path and audio stream subsystem. Corrected the conversion law for volume level in MDx devices. Added transmission of 1750Hz squelch tone to MDx and GDx. Added icons to UI. Added screen lock to radio UI. Support for a new target: Lilygo TTWR-plus. Bugfix and improvements.

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Our fellow contributor tarxvf is the creator and maintainer of dmr.tools/ and would like some feedback on it. Please fill in this 6-question survey if you've used it! forms.gle/5Paw6M6Mn1iEUcYh6 And don't forget to star his repo: github.com/tarxvftech/progra…
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Support for T-TWR Plus is now merged in our main branch! The radio can Tx and Rx in FM, even the GPS is working! Future updates will bring Bluetooth LE KISS TNC capabilities to enable sending APRS packets! @lilygo9 @aprsfi @APRSdroid #hamradio #amateurfunk #foss
Picture of a LILYGO T-TWR Plus radio standing on a bookshelf showing the OpenRTX about screen with the main authors’ names.

ALT Picture of a LILYGO T-TWR Plus radio standing on a bookshelf showing the OpenRTX about screen with the main authors’ names.

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Pietro designed a beautiful and functional 3D printable case for the T-TWR Plus. Firmware development is going fast, so pretty soon we'll have a complete M17-enabled radio! @lilygo9 @m17_project
Pietro Tordini@PietroTordini28 Jul 2023
New body for the T-TWR Plus and the M17 and OpenRTX Project. It’s printable without supports It’s tool less to instal It takes no time to open up to tinker with the board, and even less to close it back! Repository with the files here tomorrow :)
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T-TWR Plus Open Edition running OpenRTX. This platform will be able to modulate arbitrary digital protocols, including M17 without hardware mods! ESP32 has Bluetooth and Wi-Fi, so there is great potential for experimentation 🚀 @lilygo9 @m17_project
Picture of a LILYGO T-TWR Plus Open Edition on a dark background, lit by an RGB rainbow light, showing OpenRTX splash screen.

ALT Picture of a LILYGO T-TWR Plus Open Edition on a dark background, lit by an RGB rainbow light, showing OpenRTX splash screen.

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First Hello World by OpenRTX built with Zephyr RTOS! 🎉🎉🎉 This will enable T-TWR and Quansheng UV-K5 ports!
Screenshot of Zephyr serial console saying "ciao da OpenRTX su Zephyr!", from italian "hello from OpenRTX on Zephyr!".

ALT Screenshot of Zephyr serial console saying "ciao da OpenRTX su Zephyr!", from italian "hello from OpenRTX on Zephyr!".

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From today, G-NiceRF is producing SA868 “open edition”, this variant is blank and can be reprogrammed freely to enable M17 and other digital modes! UHF: a.aliexpress.com/_mP5z5EG VHF: a.aliexpress.com/_mNLKxyC All our gratitude goes to Amo BD4VOW! 🙏
Picture of two SA868 modules, they have a metal RF cage on top and a blue pcb on the bottom with castellated pads.

ALT Picture of two SA868 modules, they have a metal RF cage on top and a blue pcb on the bottom with castellated pads.

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New week, new hardware! IU3POA has created BB Hat, a hat for the STM32 BlackBoard that runs OpenRTX and can (de)modulate M17 when combined with an analog radio! Bonus: all the components are through-hole so this one is easy to source, solder and hack! @M17project #hamradio #foss
Picture of BB Hat, an add-on for the STM32 Black Board that includes a display and keys, that show the OpenRTX about screen, as well as all the passives needed to interface with an analog radio. A red LED is lit on the board.

ALT Picture of BB Hat, an add-on for the STM32 Black Board that includes a display and keys, that show the OpenRTX about screen, as well as all the passives needed to interface with an analog radio. A red LED is lit on the board.

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