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Submission + - Longer video shows How Incredibly Close Falcon Stage Came to Successful Landing (

Bruce Perens writes: In the video here, the Falcon 9 first stage is shown landing with a tilt, and then a thruster keeps the rocket vertical on the barge for a few seconds before it quits, followed by Kabooom with obvious significant damage to the barge. It looks like this attempt was incredibly close to success. Given fixes, a successful first-stage recovery seems likely.

Submission + - Developers Disclose Schematics for 50-1000 MHz Software-Defined Transceiver (

Bruce Perens writes: Chris Testa KD2BMH and I have been working for years on a software-defined transceiver that would be FCC-legal and could communicate using essentially any mode and protocol up to 1 MHz wide on frequencies between 50 and 1000 MHz. It's been discussed here before, most recently when Chris taught gate-array programming in Python. We are about to submit the third generation of the design for PCB fabrication, and hope that this version will be salable as a "developer board" and later as a packaged walkie-talkie, mobile, and base station. This radio is unique in that it uses your smartphone for the GUI, uses apps to provide communication modes, contains an on-board FLASH-based gate-array and a ucLinux system. We intend to go for FSF "Respects Your Freedom" certification for the device. My slide show contains 20 pages of schematics and is full of ham jargon ("HT" means "handi-talkie", an old Motorola product name and the hams word for "walkie talkie") but many non-hams should be able to parse it with some help from search engines. Bruce Perens K6BP

Submission + - Learn Gate-Array Programming in Python and Software-Defined Radio 1

Bruce Perens writes: Chris Testa KB2BMH taught a class on gate-array programming the SmartFusion chip, a Linux system and programmable gate-array on a single chip, using MyHDL, the Python Hardware Design Language to implement a software-defined radio transceiver. Watch all 4 sessions: 1, 2, 3, 4. And get the slides and code. Chris's Whitebox hardware design implementing an FCC-legal 50-1000 MHz software-defined transceiver in Open Hardware and Open Source, will be available in a few months. Here's an Overview of Whitebox and HT of the Future. Slashdot readers funded this video and videos of the entire TAPR conference. Thanks!

Submission + - Open Hardware and Digital Communications conference on free video, if you help (

Bruce Perens writes: The TAPR Digital Communications Conference has been covered twice here and is a great meeting on leading-edge wireless technology, mostly done as Open Hardware and Open Source software. Free videos of the September 2014 presentations will be made available if you help via Kickstarter. For an idea of what's in them, see the Dayton Hamvention interviews covering Whitebox, our Open Hardware handheld software-defined radio transceiver, and Michael Ossman's HackRF, a programmable Open Hardware transceiver for wireless security exploration and other wireless research. Last year's TAPR DCC presentations are at the Ham Radio Now channel on Youtube.

Submission + - Three Videos on Codec2 and Open Hardware

Bruce Perens writes: Codec2 is the Open Source ultra-low-bandwidth speech codec capable of encoding voice in 1200 Baud. FreeDV (freedv .org) is an HF (global-range radio) implementation that uses half the bandwidth of SSB, and without the noise. Here are three speeches about where it's going:
  • David Rowe: Embedding Codec2: Open Source speech coding on a low-cost microprocessor, at 2014. YouTube, downloadable MP4.
  • Bruce Perens: FreeDV, Codec2, and HT of the Future (how we're building a software-defined walkie-talkie that's smarter than a smartphone), at the TAPR/ARRL Digital Communications Conference 2013., YouTube
  • Chris Testa on the .Whitebox handheld software-defined radio design that is the RF portion of HT of the Future, which was also shown at the TAPR conference.

Submission + - FCC Considering Proposal for Encrypted Ham Radio (

Bruce Perens writes: FCC is currently processing a request for rule-making, RM-11699, that would allow the use of Amateur frequencies in the U.S. for private, digitally-encrypted messages.

Encryption is a potential disaster for ham radio because it defeats its self-policing nature. If hams can't decode messages, they can't identify if the communication even belongs on ham radio. A potentially worse problem is that encryption destroys the harmless nature of Amateur radio.There's no reason for governments to believe that encrypted communications are harmless.

See for more information.


Submission + - Codec2 Project asks FCC to Modernize Regulations (

Bruce Perens writes: "The Codec2 project has developed FreeDV, a program to encode digital voice on two-way radio in only 1.125 KHz of bandwidth. But FCC regulations aren't up-to-speed with the challenges of software-defined radio and Open Source. A 24 page FCC filing created by Bruce Perens proposes that FCC allow all digital modulations and published digital codes on ham radio and switch to bandwidth-based regulation."

Submission + - The Ada Initiative Needs Your Help (

Bruce Perens writes: "The Ada Initiative has a vision: a world in which women are equal and welcome participants in open source software, open data, and open culture. They want women writing free software, women editing Wikipedia, women creating the Internet and women shaping the future of global society. They need your help.

At their donation site, you can become a sustaining sponsor, for $16/month or $32/month. I participated as one of 100 seed funders a while back, so I've put my money where my mouth is.

It's really clear, if you walk around any software conference or a ham radio conference, that there just aren't very many women there. I don't consider a one-gender environment to be a socially healthy one. Some of it is just what people like to do. But there is a pretty good case that there are social pressures against women's participation in the technologies, ranging from below-consciousness subtle to egregiously offensive. That's what the Ada Initiative works upon.

What I like about the Ada Initiative is that they have worked real positive change, they're not anti-male, they don't shoot themselves in the foot and they stay on message. Thus, I appreciate their leadership.

The most visible change they've wrought is that they have convinced many technical conferences to enact anti-harassment policies. And the policies they promote are fair, where earlier proposals were so obviously wrong.

It's inexpensive and just takes a minute to get going. Go over there and give them a hand."


Submission + - Open Hardware Journal (

Bruce Perens writes: "Open Hardware Journal is a new technical journal on designs for physical or electronic objects that are shared as if they were Open Source software. It's an open journal under a Creative Commons license. This issue contains articles on Producing Lenses With 3D Printers, Teaching with Open Hardware Submarines, An Open Hardware Platform for USB Firmware Updates and General USB Development, and more."

Submission + - LCD "engine" for spacecraft attitude control! (

Bruce Perens writes: "Japan's IKAROS satellite, which earlier performed the first successful demonstration of a solar sail, has broken more new territory. Liquid-crystal displays, yes — like in your video monitor — were fabricated into strips on the edges of the solar sail. By energizing some of the LCDs and changing the reflective characteristics of parts of the sail from specular to diffuse, JAXA scientists successfully generated attitude control torque in the sail, changing the spacecraft's orientation."
Linux Business

Submission + - Help Bruce Perens protect Open Source

Deepak writes: "Bruce Perens. needs us to help him protect Open Source. "The Open Source Initiative, the organization that certifies Open Source software licenses, is holding an executive board election soon. I am standing for election. The board is self-electing, and {I'm told I don't have a chance unless I can show community support for my candidacy.} Can you sign below to help me?" Bruce Perens."

Submission + - Bruce Perens Aims for OSI Executive ( 1

mutube writes: "Open Source advocate Bruce Perens began petititioning for support in election to the OSI Executive Board. As a self-electing board, demonstrable community support is needed to attain a seat. Perens is standing on a platform of reducing over-representation of vendors to help balance leadership to developers who are traditionally elsewhere. He argues that this will help reassert the importance of developers in the Open Source world and ensure their ongoing rights to the direction of both their code and the concept itself.

In his petition notice, Bruce suggests that recent Open Source involvement by Microsoft could lead to them being offered a place on the board. With a background fighting SCO and Novell-Microsoft patent agreements, is Bruce the best man to take them on? Who else would you want on your side?"

"Love your country but never trust its government." -- from a hand-painted road sign in central Pennsylvania