Hi there and a warm welcome to the Forum.
Hack RF seems to be a customisable SDR transmitter, so does that mean the one box can be a video source and RF modulator?
Is it just for still images or will it accept a movie file input?
Will it output in Band I?
If it’s an SDR I bet it could do vestigial sideband, it sounds interesting.
Building upon a decade old idea called FOTH-TV A couple of us have been using a PC graphics card under Windows to generate 405 (and Baird 240) line material, you just need to add your own modulator to complete the project
https://www.vintage-radio.net/forum/...d.php?t=130716
www.nostalgiatech.co.uk/Baird%20240%20lines.htm
https://www.youtube.com/user/pmscott6135?hl=en-GB&gl=GB