DATV Update
Simon Brown • December 17, 2024
DATV Update, December 17th 2024
So, here's an update on my DATV project. This is a pure software solution for DATV (DVB-S2) which can be used with Pluto, Lime (later) and other SDRs. No extra hardware such as the BATC MiniTiouner is needed.
Summary
Good progress is being made:
- CPU load is low, see Task Manager screenshot below, CPU is i5-13600F at only 2.7%. Low CPU is important for this type of application it shows good design and implementation
- Can view QO-100 transmissions:
- BATC Thursday evening net hosted by Martin, G4FKK
- Sunday afternoon WWW net hosted by Gary ZS6YI
- Transmit code is all in place, tested via a loopback option where the transmit IQ data is fed back into the receive chain.
- Currently only Normal frames (64,800 bits) are supported. Short frames (16,200 bits) will be supported.
- All FEC rates work, the BCH code is been highly optimised.
Next step is some live transmissions before the end of December 2024!
And here's a video!
Major Change Scroll down to the SDR Radio information. The bandwidths available for SDR Television when using a Pluto / LibreSDR have changed.
BATC Net, May 22nd 2025 Here's a snippet from the British Amateur Television Club net on QO-100. I hope it doesn't scare you.
UI Refresh And More...
After too much grief, I've decided to stop using Wi-Fi to connect the small NUC systems in the computer room to my network: DX Cluster (Ubuntu) SDR Server (Windows) User Forums (Windows) These servers are in constant use, causing the wireless transmitter on my TP-Link AX50 to fail. By switching over to a wired network there's less demand on the wireless transmitter and the whole network has become far more reliable. In future I will only use Wi-fi when there's no alternative. I'm keeping a spare router ready just in case the AX50 fails.
Inside All this equipment is installed in my computer room, next to the office.
SDR Television video from Australia
Sounds Like... And before I start, may I apologise for the delay in finding the cause of the noise.
YouTube Many thanks to Tech Minds, aka Matt M0DQW for this very complimentary YouTube video. I hope you enjoy it as much as I did.
The first Major Update
