[Allstar Digital] Off topic

[Stephen - K1LNX]

Well this is pretty darn awesome! Any plans to release the source or a
compiled binary for us to play with? I would love to have this ability as
I'm sure many others would!

Good work Mike!

73
Stephen
K1LNX

On Wed, Feb 10, 2016 at 10:43 AM, Mike Zingman <mike.zingman at gmail.com>
wrote:

> Since this is an ASL list, this is off topic, but may interest some
> members.  So here goes.
>
> Yesterday I decided to try a simple experiment and it worked better than I
> had expected.  I conducted my first QSO on DMR without any RF hardware at
> all.  Basically just like the DVDongle/ThumbDV for DStar is used (WinDV or
> DummyRepeater).  It looks like:
>
> Mic/Speaker on PC <---> DMRGateway <---> DMRlink <--- BM or SANDBOX
>
> DMRGateway talks directly with the ThumbDV to both encode and decode the
> AMBE data.  The audio and data paths look like:
>
> TX - Mic audio is pulled from the sound card as 8KHZ PCM and feeds the
> encoder.  PTT is controlled by either VOX or a keyboard toggle.  The AMBE
> is then encapsulated in IPSC frames and passed on to DMRlink to send to the
> network.
>
> RX - DMRlink sends us AMBE frames.  AMBE audio is decoded by the ThumbDV
> and the 8KHZ PCM is sent to the sound hardware.
>
> This is the same as the ASL solution with USRP except that there is no ASL
> and no USRP ;-)
>
> And it works!  The sound is clean.
>
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>
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