DATV-Express Project - January update report

Digital ATV - The latest generation, cutting edge ATV - Please discuss it all here.
Forum rules
This forum is run by the BATC (British Amateur Television Club), it is service made freely available to all interested parties, please do not abuse this privilege.

Thank you
Post Reply
KenW6HHC
Posts: 309
Joined: Mon Jun 01, 2009 4:20 pm

DATV-Express Project - January update report

Post by KenW6HHC » Wed Feb 01, 2017 4:03 pm

The project’s Manufacturing/Testing manager, Art WA8RMC worked hard during January to ship out all remaining DATV-Express boards in inventory. Art reports that a new production batch of boards has been ordered. All of the discrete components have already arrived and the blank boards (PCBs) should arrive soon. We expect the assembly of the boards to begin around Feb 13 or 14. If everything proceeds as planned, then tested boards will be able to ship before the end of February.

Ken W6HHC reported that a French Translation of the DATV-Express Users Guide for Windows has been prepared by Pierre HB9IAM / F8BXA.

Image
A new French Translation by Pierre-HB9IAM of the DATV-Express User Guide for Windows (draft10) is now available for download.

The TRADUCTION FRANCAISE of the Windows Users Guide (draft10) is now available on the website at http://www.DATV-Express.com under the DOWNLOADS link.

Ken W6HHC had a chance to do DVB-S2 testing after Jean-Pierre F6DZP released the DVB-S2 code (v0.5a) for the MiniTiouner receiver-and-analyzer. The new code can currently receive H.262, H.264, and H.265 CODECs…and SymbolsRates down to 125 kSymb/sec…and QSK and 8PSK modulation signals.
Image
The MiniTiouner (v0.5a) is shown in analyzer-mode for DVB-S2 at SR=333 kSymb/s with a modulation constellation of 8PSK.

Charles G4GUO has done some programming and has been able to get his LimeSDR TX/RX board running GNUradio code. LimeSDR is currently shipping some 500 early bird units. This initial LimeSDR production batch is in the hands of Parcel Force at the moment so Charles should get three more boards in a week or so. Further study of implementing a RF Channel-simulation application for testing receivers at microwave frequencies reveals this proposed application is most likely beyond the reach of the LimeSDR FPGA size. Simulating multiple reflections of the received signals quickly doubles and even x12 the size of the code and data handling needed in the FPGA.
.
“Project speed set to Working Hard for more production”…de Ken W6HHC
Top
Post Reply

Return to “DATV - Digital ATV”