I found this really interesting ....seems simple even for me ,apart from needing a graphics card in your PC that has 2 VGA sockets ,i wonder if a laptop the monitor screen counts as one and the vga socket the other would be the same idea ? checking testing the the program it detects my graphics chip .
http://www.nostalgiatech.co.uk/Baird%20240%20lines.htm
Another forum chatting about this
https://www.vintage-radio.net/forum/sho ... p?t=144356
youtu.be/ahzdx4KgWBg