@derekkozel.com
Reposted
New blog post: Non-coherent m-FSK BER. Another short post in which I derive the following formula for the symbol error rate of non-coherent m-FSK and validate it using simulations. destevez.net/2025/10/non-...
October 25, 2025 at 9:28 AM
New blog post: Non-coherent m-FSK BER. Another short post in which I derive the following formula for the symbol error rate of non-coherent m-FSK and validate it using simulations. destevez.net/2025/10/non-...
Reposted
if i published a game on steam that consisted of a "code editor and HDL toolchain behind it (simply works)" & the objective is "implement logic in a real HDL without handrails but with debugger and tutorials" and there is a progression, leaderboard, and achievements
would you play or playtest it?
would you play or playtest it?
October 18, 2025 at 1:09 AM
if i published a game on steam that consisted of a "code editor and HDL toolchain behind it (simply works)" & the objective is "implement logic in a real HDL without handrails but with debugger and tutorials" and there is a progression, leaderboard, and achievements
would you play or playtest it?
would you play or playtest it?
Reposted
New blog post: Synthetic aperture radar autofocus and calibration.
Synthetic aperture radar autofocus and calibration
3D trajectory position error estimation autofocus, antenna pattern normalization, and polarimetric calibration for drone mounted SAR radar.
hforsten.com
October 7, 2025 at 3:44 PM
New blog post: Synthetic aperture radar autofocus and calibration.
Reposted
Have you ever wanted to see a 90 second abridged explanation of how diode lasers work? Here it is.
I took some pictures of a laser under my SEM, and it kind of just scope crept into a whole video. Not perfectly accurate, but it's hard to squeeze 100 books of info into 90 seconds.
I took some pictures of a laser under my SEM, and it kind of just scope crept into a whole video. Not perfectly accurate, but it's hard to squeeze 100 books of info into 90 seconds.
September 29, 2025 at 7:36 AM
Have you ever wanted to see a 90 second abridged explanation of how diode lasers work? Here it is.
I took some pictures of a laser under my SEM, and it kind of just scope crept into a whole video. Not perfectly accurate, but it's hard to squeeze 100 books of info into 90 seconds.
I took some pictures of a laser under my SEM, and it kind of just scope crept into a whole video. Not perfectly accurate, but it's hard to squeeze 100 books of info into 90 seconds.
Reposted
Knap mistig in Dwingeloo!
Foto: Arno Schoenmakers.
Foto: Arno Schoenmakers.
September 29, 2025 at 8:46 AM
Knap mistig in Dwingeloo!
Foto: Arno Schoenmakers.
Foto: Arno Schoenmakers.
Reposted
FOSDEM 2026 - FOSDEM 2026: 31st January and 1st February
Brussels / 31 & 1 January 2026
fosdem.org
September 19, 2025 at 9:22 AM
Reposted
💥Greater (partial) success for #amateurradio and #amsat satellite operators in dispute with AST Spacemobile over commercial use of the 430-440 MHz amateur radio band for TT&C! 💥 In its reference Attachment to the recent grant, dated August 29, 2025, the FCC imposes clear limits ⬇️
September 6, 2025 at 12:41 PM
💥Greater (partial) success for #amateurradio and #amsat satellite operators in dispute with AST Spacemobile over commercial use of the 430-440 MHz amateur radio band for TT&C! 💥 In its reference Attachment to the recent grant, dated August 29, 2025, the FCC imposes clear limits ⬇️
Reposted
Ok let me rephrase this. Games (or puzzles) that use (or misuse) pointers (or other things I don't understand ) as a mechanic.
Are there any games about accessing out of bounds memory on microcontrollers ? Like I'm imagining doing some things in C to intentionally access unallocated memory to print some specific result. Am I making sense ?
August 14, 2025 at 1:50 PM
Ok let me rephrase this. Games (or puzzles) that use (or misuse) pointers (or other things I don't understand ) as a mechanic.
Reposted
If you missed it, there's a new Murderbot short story at: reactormag.com/rapport-mart...
Rapport: Friendship, Solidarity, Communion, Empathy - Reactor
Perihelion and its crew embark on a dangerous new mission at a corporate-controlled station in the throes of a hostile takeover… Novelette | 7,540 words They were still three hours out when Perihelion...
reactormag.com
July 18, 2025 at 1:21 PM
If you missed it, there's a new Murderbot short story at: reactormag.com/rapport-mart...
The Australian GNU Radio Days event is running September 23-26 in Adelaide, hosted by Flinders University. Three days of talks and workshops followed by breakouts.
Still a little time to submit a talk or booth if you're interested!
events.gnuradio.org/event/27/
Still a little time to submit a talk or booth if you're interested!
events.gnuradio.org/event/27/
July 30, 2025 at 8:18 PM
The Australian GNU Radio Days event is running September 23-26 in Adelaide, hosted by Flinders University. Three days of talks and workshops followed by breakouts.
Still a little time to submit a talk or booth if you're interested!
events.gnuradio.org/event/27/
Still a little time to submit a talk or booth if you're interested!
events.gnuradio.org/event/27/
GNU Radio is looking for a contractor to either port the existing Qt based GNU Radio Companion application to the web (running proof of concept exists), or to develop a new frontend capable of creating flowgraphs, executing the resulting program, and displaying the UI in the web.
Could that be you?
Could that be you?
July 26, 2025 at 10:33 PM
GNU Radio is looking for a contractor to either port the existing Qt based GNU Radio Companion application to the web (running proof of concept exists), or to develop a new frontend capable of creating flowgraphs, executing the resulting program, and displaying the UI in the web.
Could that be you?
Could that be you?
Reposted
We are finally ready to announce that EMF 2026 will happen on July 16-19, 2026, at Eastnor Castle Deer Park, Herefordshire.
Expect more updates soon as we start spinning up the organisation again.
Expect more updates soon as we start spinning up the organisation again.
July 20, 2025 at 6:31 PM
We are finally ready to announce that EMF 2026 will happen on July 16-19, 2026, at Eastnor Castle Deer Park, Herefordshire.
Expect more updates soon as we start spinning up the organisation again.
Expect more updates soon as we start spinning up the organisation again.
@angadh.com I really like the formatting of your blog. The typography, suggested soundtracks, clear links, and organizations work well together. I'm enjoying the variety of topics as well. Thanks for sharing your writing!
July 3, 2025 at 11:03 PM
@angadh.com I really like the formatting of your blog. The typography, suggested soundtracks, clear links, and organizations work well together. I'm enjoying the variety of topics as well. Thanks for sharing your writing!
Reposted
Meet HackRF Pro! HackRF Pro is a Software Defined Radio peripheral capable of transmission or reception of radio signals from 100 kHz to 6 GHz.
You can read more about HackRF Pro and preorder it now from select resellers here: greatscottgadgets.com/hackrf/pro/
You can read more about HackRF Pro and preorder it now from select resellers here: greatscottgadgets.com/hackrf/pro/
June 24, 2025 at 2:22 PM
Meet HackRF Pro! HackRF Pro is a Software Defined Radio peripheral capable of transmission or reception of radio signals from 100 kHz to 6 GHz.
You can read more about HackRF Pro and preorder it now from select resellers here: greatscottgadgets.com/hackrf/pro/
You can read more about HackRF Pro and preorder it now from select resellers here: greatscottgadgets.com/hackrf/pro/
Reposted
A new image of the International Space Station from another satellite captured by heospace.com 2025-06-14 21:28:56 UTC.
The picture has a resolution of 18cm from a distance of 85.77km.
The picture has a resolution of 18cm from a distance of 85.77km.
June 17, 2025 at 10:44 PM
A new image of the International Space Station from another satellite captured by heospace.com 2025-06-14 21:28:56 UTC.
The picture has a resolution of 18cm from a distance of 85.77km.
The picture has a resolution of 18cm from a distance of 85.77km.
Reposted
Found motivation to write some SAR processing code. Fast factorized backprojection generates several small polar format images and then interpolates them to one big image. It's faster, but has slightly worse image quality due to all the interpolations.
June 1, 2025 at 5:42 PM
Found motivation to write some SAR processing code. Fast factorized backprojection generates several small polar format images and then interpolates them to one big image. It's faster, but has slightly worse image quality due to all the interpolations.
Reposted
GRCon25 Call for Participation is open! Please submit your abstracts for presentations, papers, workshops - all the information available at gnuradio.org/grcon25
March 17, 2025 at 1:44 PM
GRCon25 Call for Participation is open! Please submit your abstracts for presentations, papers, workshops - all the information available at gnuradio.org/grcon25
Reposted
I added a sideways looking GoPro camera to my radar drone. Just tested it the first time and it looks very nice.
March 8, 2025 at 10:22 AM
I added a sideways looking GoPro camera to my radar drone. Just tested it the first time and it looks very nice.
Reposted
New blog post: BGM-1 Doppler during the lunar landing. Some quick plots of the Doppler of @firefly-aerospace.bsky.social's lander as received by the @amsat-dl.org and @radiotelescoop.bsky.social groundstations.
March 5, 2025 at 11:51 AM
New blog post: BGM-1 Doppler during the lunar landing. Some quick plots of the Doppler of @firefly-aerospace.bsky.social's lander as received by the @amsat-dl.org and @radiotelescoop.bsky.social groundstations.
Reposted
KiCad Version 9.0.0 Release
The KiCad project is proud to announce the latest major version release. See the blog post on the KiCad website for more information about this release.
www.kicad.org/blog/2025/02...
The KiCad project is proud to announce the latest major version release. See the blog post on the KiCad website for more information about this release.
www.kicad.org/blog/2025/02...
Version 9.0.0 Released
The KiCad project is proud to announce the release of the next major version of
KiCad. Version 9 is packed with new features, improvements, and hundreds of bug
fixes. We hope you enjoy the new versio...
www.kicad.org
February 20, 2025 at 3:36 PM
KiCad Version 9.0.0 Release
The KiCad project is proud to announce the latest major version release. See the blog post on the KiCad website for more information about this release.
www.kicad.org/blog/2025/02...
The KiCad project is proud to announce the latest major version release. See the blog post on the KiCad website for more information about this release.
www.kicad.org/blog/2025/02...
Reposted
Hello Bluesky!
Follow for homemade radars, RF electronics, FPGAs, programming, and other electronics related things.
Follow for homemade radars, RF electronics, FPGAs, programming, and other electronics related things.
November 24, 2024 at 9:25 AM
Hello Bluesky!
Follow for homemade radars, RF electronics, FPGAs, programming, and other electronics related things.
Follow for homemade radars, RF electronics, FPGAs, programming, and other electronics related things.
Reposted
Sylvain Munaut has created a basic software-defined radio the hard way — by combining two open-silicon projects submitted for production on two Tiny Tapeout shuttle runs: an analog-to-digital converter and a radio-frequency mixer.
Sylvain Munaut Combines Two Tiny Tapeout Projects to Create an Open-Silicon Software-Defined Radio
While the resulting SDR won't be winning any awards for performance or features, it's a great example of Tiny Tapeout's flexibility.
www.hackster.io
February 10, 2025 at 9:20 PM
Sylvain Munaut has created a basic software-defined radio the hard way — by combining two open-silicon projects submitted for production on two Tiny Tapeout shuttle runs: an analog-to-digital converter and a radio-frequency mixer.
Reposted
The recording for my #FOSDEM talk "Yet another new SDR runtime?" is now up. In this talk I speak about high-performance SDR runtimes in embedded systems, and present an experimental runtime I have been writing in Rust.
February 8, 2025 at 2:52 PM
The recording for my #FOSDEM talk "Yet another new SDR runtime?" is now up. In this talk I speak about high-performance SDR runtimes in embedded systems, and present an experimental runtime I have been writing in Rust.
I'm headed to #FOSDEM this weekend! @gnuradio.bsky.social has a booth and there's a Radio devroom on Saturday.
January 30, 2025 at 5:07 PM
I'm headed to #FOSDEM this weekend! @gnuradio.bsky.social has a booth and there's a Radio devroom on Saturday.
Reposted
Hello Bluesky! 📡
We're Goonhilly and we're a space technology company offering secure and reliable communication solutions from our sites in the UK and USA!
We can't wait to keep you updated on our work across our three divisions:
- Lunar & Deep Space Comms
- Commercial Satcom
- Defence & Security
We're Goonhilly and we're a space technology company offering secure and reliable communication solutions from our sites in the UK and USA!
We can't wait to keep you updated on our work across our three divisions:
- Lunar & Deep Space Comms
- Commercial Satcom
- Defence & Security
January 27, 2025 at 9:58 AM
Hello Bluesky! 📡
We're Goonhilly and we're a space technology company offering secure and reliable communication solutions from our sites in the UK and USA!
We can't wait to keep you updated on our work across our three divisions:
- Lunar & Deep Space Comms
- Commercial Satcom
- Defence & Security
We're Goonhilly and we're a space technology company offering secure and reliable communication solutions from our sites in the UK and USA!
We can't wait to keep you updated on our work across our three divisions:
- Lunar & Deep Space Comms
- Commercial Satcom
- Defence & Security