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LinHT – an interview with the development team
LabCat (Tobias DL3MHT) uploaded his interview with the LinHT development team: Wojciech SP5WWP, Vlastimil OK5VAS, and Andreas OE3ANC. Check it out 🙂
Friedrichshafen ham radio fair 2026
Our team spent three amazing days at the HAM Radio Friedrichshafen event. We had a real lot of traffic. Thank you for stopping by and for all the questions that you had! Big shout out to DARC guys, especially Jann Traschewski DG8NGN, for providing space for our booth. M17 Foundation attendees: OpenRTX booth:
LinHT Rev B status: what works, what broke, and why Rev C is next
Before Friedrichshafen, we want to put the current LinHT development status in one place. We have published many short updates over the last months, and the project moved through several phases: Rev A proof-of-concept testing, Rev B design, manufacturing, first boot, RF tests, audio bring-up, GNSS debugging, and now Rev C planning. This post summarizes […]
LinHT Rev B – GNSS antenna issues
Vlastimil OK5VAS recently tested the GNSS module. Unfortunately, the module used (Quectel LG77L) does not obtain a fix, even when enabled for 30 minutes, outdoors. The most suspicious part, and likely culprit, is the path between the antenna and the module: When measured, S11 (from the GNSS module’s perspective) looks like this: Many thanks to […]
mvoice 1.4.2 now available
News from Tom, N7TAE: Version 1.4.2 of mvoice is now available. It pulls the https://m17-project.github.io/hostfiles/M17Hosts.json file to initialize the reflector selection drop-down menu. A GIANT Thank You to Jim N1ADJ for setting this up! More details: https://github.com/n7tae/mvoice
Getting on the air with the MSEVEN iOS app
Video by Jeff Scoville, AE5ME.
LinHT Rev B – hardware testing status
It took us some time, but here’s a quick update on where we’re at with the LinHT Rev B hardware tests: What‘s working? Still requires testing Known problems Test setups RX path (RF switch, attenuators) For testing, I used a simple GNU Radio flowgraph, based on the M17 flowgraph used in LinHT, to check the […]
OpenRTX v0.4.4 release
New, M17-related functions include: More info: https://github.com/OpenRTX/OpenRTX/releases/tag/v0.4.4
LinHT rev B – first boot
Sharing great news from Andreas OE3ANC. Good work, team!
m17-gateway now supports three hardware platforms including SX1255 HAT
I’m happy to announce release 0.5.0 of my M17 Go tools project at github.com/jancona/m17 with some significant updates! Three hardware platforms, full M17 feature support m17-gateway now supports three different modem/hardware platforms: All three give you the full M17 feature set, including voice, SMS messaging, and GNSS-based station position mapping — features that many other […]
LinHT Rev B update
We finally have the first fully assembled LinHT Rev B PCB. The board powers up correctly, the ATTiny power-management firmware is working, and the PMU logic now controls the startup/shutdown sequence as intended. USB-C charging is also working as expected, and the whole device can be powered on with the rotary ON/OFF switch. We also […]
LinHT boards have arrived!
Today, we have received a set of three Rev B boards. They will be tested in the coming days. Stay tuned! What’s new in Rev B:– redesigned power supply– internal RF power amplifier (~5W at 435MHz, CW)– improved RF receiver path (added variable attenuation)– GNSS receiver– battery charging through USB-C– cleaner layout and grounding Photo […]