DATV-Express Project - October update report

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KenW6HHC
Posts: 309
Joined: Mon Jun 01, 2009 4:20 pm

DATV-Express Project - October update report

Post by KenW6HHC » Wed Nov 01, 2017 5:48 pm

As Art WA8RMC explained in the September Report, the DATV-Express boards have sold out and are no longer available until the project team decides IF we want to make another production run. If you want a board, send a message to support@datv-express.com and we will put your name on the list of those hams wanting boards. But no requests for boards were received during October. The PayPal BUY button has been REMOVED from the PURCHASE NOW page on the DATV-Express.com web site. Two new DATV products are getting ready to appear on the market. The Analog Devices ADALM-PLUTO SDR Tx/Rx may become available again in first week in January at a price of US$100 or US$150. The Lime-Micro mini-LimeSDR Tx/Rx is rumored to ship in mid-January at a price of US$140. Both of these new SDR boards will be lower priced than the DATV-Express Tx-only board (US$300).

Charles G4GUO is working on RECEIVING DVB-S2 protocol with the PLUTO-ADALM unit in Linux software. The most difficult portion of the effort is to implement a fast version of the LDPC decoder for Forward Error Correction functions. So far, Charles can currently decode 500 KSymb/sec using an expensive CUDA graphics card from NVIDIA to provide hardware acceleration of the LDPC algorithm. He still has a lot of work to now optimize the speed of LDPC by rewriting the algorithm to use the GPU’s memory in the most efficient way. Charles explained that he can foresee some cheaper GPU’s than the CUDA board doing a reasonable job with this FEC task. Note that this need for a GPU does not exist if receiving DVB-S protocol.

Image
first PLUTO Rx Screen Capture of DVB-S2 at 500KSymb/s by G4GUO

Finally, Art WA8RMC reports that the first draft PCB layout files for the MiniTiouner-Express version of the MiniTiouneV2 board design have completed by Tom WB6P and have been reviewed with just a few simple changes. An PCB update will be started by WB6P when he returns from a short vacation. The intent is to produce a smaller and assembled and tested version of the Serit NIM PCBA design at an affordable price.


“Project speed set to slow” …. de Ken W6HHC
Last edited by KenW6HHC on Thu Nov 02, 2017 1:06 pm, edited 1 time in total.

hp197
Posts: 5
Joined: Tue Oct 31, 2017 8:26 am

Re: DATV-Express Project - October update report

Post by hp197 » Thu Nov 02, 2017 8:25 am

KenW6HHC wrote:If you want a board, send a message to support@datv-express.com and we will put your name on the list of those hams wanting boards. But no requests for boards were received during October.
What?! I was quite sure I sent in a request...
Image

KenW6HHC
Posts: 309
Joined: Mon Jun 01, 2009 4:20 pm

Re: DATV-Express Project - October update report

Post by KenW6HHC » Wed Nov 08, 2017 4:03 pm

Thank you Henry PDØOM,

You alerted the DATV-Express project team to a problem on our server that we were unaware of.
The SUPPORT e-mail problem has been now corrected. It appears that all e-mails during October and early November were lost.

Anyone who may have sent an e-mail during that time frame, please resend.

Our apologies for the confusion and inconvenience.

73....de the entire DATV-Express project team
Last edited by KenW6HHC on Wed Nov 08, 2017 6:40 pm, edited 1 time in total.

hp197
Posts: 5
Joined: Tue Oct 31, 2017 8:26 am

Re: DATV-Express Project - October update report

Post by hp197 » Wed Nov 08, 2017 6:16 pm

KenW6HHC wrote:If you sent an e-mail during that time frame, please resend.
:D Good to see you found it.
I have send you a new one at 19:15 CEST

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