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Re: NBTV Software

PostPosted: Mon Jul 03, 2023 5:36 pm
by Steve Anderson
The last link is interesting. (no audio), any further information?

Steve A.

Re: NBTV Software

PostPosted: Sat Jul 08, 2023 7:59 pm
by Harry Dalek
Steve Anderson wrote:The last link is interesting. (no audio), any further information?

Steve A.


More here Steve as i recall he explains the system in one of the earlier videos you might understand how he has done this

https://www.youtube.com/@kargaroc386/se ... %20line%20

Re: NBTV Software

PostPosted: Thu Sep 26, 2024 5:29 am
by GrantXTV
Hi All,

I have setup a Get-hub account, both the NBTV_TX and the NBTV_RX files are there for version 2.9. Here is the Link: https://github.com/GrantXTV/NBTV-Project

There are bugs in the software, let me know if there is any issues getting the files and installing them?

In the last few day I have experimented with different ideas for the configurations for the modulator and the demodulator, I tested out the new design with sending to file and receiving back from file. As I still running my CPU full out at 100%, giving me a frame rate of about two video frames per second. Once I get some feedback from the encoder / decoder software that up on on GitHub, I will make the GNU Radio files available to limited number users to tryout. As it is not that easy do a full testing with my current hardware, until I can get a newer computer to work with.

Here are a few images showing the upper level of the GNU Radio modulator and the demodulator, with the other one showing testcard F, of the video coming back to the decoder. I was testing with mode 4 the uncompressed video mode at 120 x 96 x 8, 1/3, as I get a number of errors with modes 1 to 3, which is still been worked on. This new type of NBTV system designed for HF radio sky wave propagation, still very much a work in progress. Software was tested with Ubuntu Linux, using Gambas3 modules as the base layer, that will need to be install as well as the NBTV application.

Grant