M17 Open Source Radio #hamradio #radio

In 2019 Wojciech Kaczmarski (SP5WWP), started working on the M17 open source radio project. Since then the project has made great progress – assembling a team of Hams involved, a project website, mailing list – and steady progress on the development of the TR9 radio, the first to be built to the M17 standard.

For the RF deck, the TR9 is using the chipset approach and a RRC filtered 4FSK waveform, similar to DMR. For my own work, I like to optimise low SNR performance by building the physical layer, but I’m a bit of a modem nerd, and it complicates the RF side. Compared to a low cost SDR/custom RF design – the RF chipset approach this will get them on the air quickly, and the filtered 4FSK will have a narrow on air bandwidth (12.5kHz channel spacing). Sensitivity will be similar to analog FM/DMR radios.

See more

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 35,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/

CircuitPython – The easiest way to program microcontrollers – CircuitPython.org

Maker Business — Moving manufacturing out of China

Wearables — Take control of your LED sequins

Electronics — Current limiting!

Python for Microcontrollers — Python on Microcontrollers Newsletter: ESP32 Web Workflow for CircuitPython, CircuitPython Day 2022 and more! #CircuitPython @micropython @ThePSF @Raspberry_Pi

Adafruit IoT Monthly — Detect Radiation, ML Baby Monitor, and more!

Microsoft MakeCode — MakeCode Thank You!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — New Products 8/11/2022 Featuring #adafruit 14-segment LED Alphanumeric Backpack – STEMMA QT!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !

1 Comment

  1. Hello from the M17 Team! Awesome to see some news about our project here, I hope we can get a lot more folks interested.
    We’ve got an IRC channel that’s pretty active if anyone has questions, and a forum for those that like forums.

    #m17 on irc.geekshed.net


    Feel free to join us! We have people from all over the world working on this project, and we’d be happy to have you!

Sorry, the comment form is closed at this time.