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Re: 1976 and M17

 

Peter:

Good questions.

Codec 2 is licensed as LGPL-2.1 -?

The primary developer of Codec 2 was David Rowe?VK5DGR.

M17 Protocol specification () is copyrighted 2024 by M17 Project.

Not to be flip, and admittedly this is hard to explain to others who don¡¯t live Open Source¡­ but the primary reason to be interested in and promote M17 is¡­

That ¾±³Ù¡¯²õ open!

Secondary reasons to be interested in and promote M17:
  • As an open source specification / system, ¾±³Ù¡¯²õ extensible (and forkable, and embeddable)
  • From the beginning it data was incorporated as a ¡°peer to voice¡± - none of the other DV systems can say that. For example, you can attach to an M17 unit (that supports the data part of the spec - not all units do) as a KISS TNC. That¡¯s really big.
  • M17 has developed into an entire ecosystem of devices, including support in MMDVM hotspots and modems.
  • The first ¡°M17 works out of the box¡± radio is now shipping from Connect Systems - the CS7000 M17 - .

Really¡­ this is a hard concept to get across to folks who aren¡¯t ¡°living¡± in open source. I¡¯m trying to explain this in this week¡¯s Zero Retries.

Basically, that M17 is open is singlehandedly causing people who do live open source to pay attention to Amateur Radio because with M17 they can now do (VHF / UHF) Amateur Radio that¡¯s compatible with their open source ethos.

That is bringing a lot of new people into Amateur Radio that previously had no interest.

Yeah, that¡¯s too wordy for a proper elevator pitch, but ¡°I didn¡¯t have enough time to write a short note, so I wrote a long one¡±. (Sorry, old writer¡¯s joke.)

Thanks,

Steve N8GNJ


On Aug 14, 2024 at 10:54:23, Peter Laws via <plaws0=[email protected]> wrote:

On Wed, Aug 14, 2024 at 12:19?AM Tony Langdon via
<vk3jed=[email protected]> wrote:

On 14/8/24 2:10 pm, Jim - K6JM via wrote:

> I once took a course in Change Management, that is, selling improvement processes to people in an organization.? The leader gave us all kinds of suggestions, but also pointed out that some people will never change, but they will die at some point.? Change is inevitable.

Unless it's from a vending machine. ;)

Most of those are card-swipe/NFC these days.? Which is the point, I suppose.

Open protocol works on me and I am a D-STAR fan over the other DV
methods in the hobby. ?*I* don't like that all three (D-STAR, YSF,
DMR) *all* use DVSI's IP to encode the voice.? It's the one thing
about D-STAR I don't like.? OK, there are some other things I don't
like about it but those are out of scope. :-)

But it's not 2010, it's 2024, so onward.? We've largely ... well ...
maybe not *largely* ... solved the D-STAR<->YSF<->DMR interop issue
with reflectors that will transcode between all three (it *is* between
all three, right?).

Now we need a new scheme that doesn't depend on anyone's IP but our
own and M17 appears to be it.

A couple questions:

For those of us that do keep up (mostly): ?Source code is considered a
published work and can be copyrighted.? Who owns the copyright on
CODEC2 ??Has Dave Whose-VK-call-escapes me patented any of the methods
within it (ideas can be patented)?? If so, what license are they
released under?? Same question, really, for the copyright.

All the same questions apply to the M17 protocol.

For D-STAR, it looks like JARL owns the copyright on the protocol,
DVSI owns all the IP related to AMBE, and Icom owns the trademark on
"D-STAR".? Trying to figure out the equivalents for M17 in case
someone asks me.


On selling to the majority of amateurs that *don't* keep up what is
the elevator pitch?? DV exists and people are either using it or
shunning it. ?**Without talking about intellectual property** what is
the big deal about M17?


--
Peter Laws | VE[23]UWY / N5UWY | plaws0 gmail com | Travel by Train!







--
Steve Stroh N8GNJ (he / him / his)
Editor
Zero Retries Newsletter -
Radios are Computers - With Antennas!
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