Re: [Freetel-codec2] Comments on the M17 project

Cheers Walter It’s certainly an exciting project Regards David Grove david.gr...@fastmail.com.au +61-419-444-496 From: walt...@k5wh.net Sent: Monday, 26 October 2020 14:37 To: freetel-codec2@lists.sourceforge.net Subject: Re:

Re: [Freetel-codec2] Comments on the M17 project

M17 is NOT designed for HF at all. As we have FreeDV that does a great job of that already. The M17 does indeed have the ability for routing, that is still being developed for how and where to do that, according to the guys doing this. But that’s more for call routing, like Dstar does.

Re: [Freetel-codec2] Comments on the M17 project

Thanks Walter Unfortunately, as published, M17 is double the bandwidth that would be feasible on Amateur HF using commonly available equipment. However, imagine the possibilities if the M17 protocol could be also be adapted to operate on HF as well on higher RF frequencies. Perhaps with

Re: [Freetel-codec2] Comments on the M17 project

Here ya go Alan. See if this can answer some if your questions on that. https://m17-protocol-specification.readthedocs.io/en/latest/ all the best.. Walter/K5WH From: Al Beard via Freetel-codec2 Sent: Sunday, October 25, 2020 3:27 PM To: freetel-codec2@lists.sourceforge.net Cc:

[Freetel-codec2] sweet spot?

Is there an inherent RMS sweet spot for the incoming PCM to the 1600 and 3200 Codec 2 methods? Let's assume the mic is linear and the speakers are not over-powered. -- ___ 73 n7tae (at) tearly (dot) net ___ Freetel-codec2

Re: [Freetel-codec2] Comments on the M17 project

Hi all, What about the "connection" to HF? HF where we have bandwidth restrictions hence low bit-rate codecs. That's why I asked the question: In the M17 protocol, is there a "codec specifier" ? Many more questions but one is enough. Alan VK2ZIW On Sun, 25 Oct 2020 10:30:17 -0500, walterh

Re: [Freetel-codec2] Comments on the M17 project

Good to see you Gerhard.. I just heard last night that Doug should have his Dude Star application for Android devices released maybe as early as today, that supports M17. Like it does for all the other digital modes. I heard him using it last night and it sounded great. Lots of great

Re: [Freetel-codec2] Comments on the M17 project

Hello Walter and all others, Very interesting project. I think a step in between could be to connect the M17-Client to a Gnu-Radio / Adalm Pluto TRX setup and use MMDVM / M17. That would proove the audio quality best. I am goint to setup the M17-Client next days. Could also install a M17