Yes, I should of been more clear, similar idea running nearly the same hardware. In the video he is using a RPI1. I was just pointing out a video with the same basic concept but with D-star instead of DMR. N1XBM Apparare Scientor Paratus Communicare Allstar Node # 27086, 41540, 41812, 42086, 42658 On Feb 10, 2016 11:30 AM, "Mike Zingman" <mike.zingman@gmail.com> wrote:
Robert,
The video you reference is showing how the ThumbDV/DV3000 can be used for DStar. This has been done by several developers before, but it is not for DMR.
Mike
On Wed, Feb 10, 2016 at 10:56 AM, Robert Newberry <N1XBM@amsat.org> wrote:
Real cool, I do not know how to write code or software, but it seems that it's not hard to imagine an iPhone or Android app connected to dmrlink as a peer...or something similar along those lines such as iaxrpt app.
If I understand things right, there is a guy on YouTube by the name of Budd Churchward who did something similar.
N1XBM Apparare Scientor Paratus Communicare Allstar Node # 27086, 41540, 41812, 42086, 42658
On Feb 10, 2016 10:43 AM, "Mike Zingman" <mike.zingman@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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