54 Followers
95 Following
227 Posts
Paragliding, radios, libre software. Made some contributions to md380tools, many more to M17, a few more to OpenRTX and many others. I made and run dmr.tools and a few other open source tools for radios.
Mainhttps://tarxvf.tech
Githubhttps://github.com/tarxvftech
sr.hthttps://sr.ht/~tarxvf/

I've been working on the FCS-152 again. Ported the satellite tracking code to it.
It has an ESP32 and spiffs, so it has excellent codeplug management and can download TLEs. This means on-radio doppler correction is working.
Unfortunately, the retuning for doppler interrupts audio. I've made the auto-correction interval adjustable as a result.

But my favorite part is the completely onboard web-based CPS. And I have to get at least the dynamic channel selection on every other radio.

Discovered today that firefox had reset several of its configurations - telemetry, daily usage ping, dns-over-https, were all enabled without my re-enabling them.

Fucking Mozilla. What the fuck.

Amateur Radio as Alternative to Age-Restricted Social Media

Is Amateur Radio an Alternative to Age-Restricted Social Media? Those of us at Open Research Institute think the answer is overwhelmingly yes.

Open Research Institute

Things are moving very fast for an #opulentVoice ASIC.

This is on track to be the first #opensource #hamradio chip in the world, and will have much better voice quality and user experience than any other digital voice option out there. Radio hardware to follow.

Funding and partners are now in place, despite tariff and supply chain challenges.

It's an honor and privilege to work with a fantastic international team of ORI volunteers.

Amazon used to encourage you to add links to other sites in your wish lists.

Now, years later, they've all been replaced with the string "[REDACTED]". No warning of course. No way to recover the original contents. No idea what each item used to be - though I know they are duplicated in a text file on my computer.

I'm not surprised - but I do resent Amazon just a smidge more than before.

The future is so much more cyberpunk than I ever expected.

Turned off public access to my git server.

Kept running out of disk space because bots were getting repo zip files instead of cloning the history. Not a problem at all with normal human usage patterns.

After the third time cleaning up repo-archive, I decided I've had it. No one uses it but me anyway, as far as I can tell.

Continuing to optimize sync words and quantify what optimization means and what it gets you. Here's a side by side comparison showing that correlation is better than just measuring Hamming distance, and that petter peak to sidelobe radios (better autocorrelation) helps in multi-path.

Opulent Voice has a high-performance frame synchronization word with known characteristics.

Next stop: improving frame lock signaling! ๐Ÿ”’

Hereโ€™s a figure from an upcoming article about optimizing Synchronization Words in radio signals.

Another solid contribution to open source digital radio from your friends at @OpenResearchIns ๐Ÿ™‚

Article will discuss Barker codes, concatenated Barker codes, maximum length sequences and truncations, Zadoff-Chu sequences, metrics of sync words, and how we chose the sync words for Opulent Voice. See the draft article in ORI's next newsletter.

Sign up at https://www.openresearch.institute/newsletter-subscription/

The human urge to suddenly sink six months into making custom furniture and then never do it again.