New project box! 👀

They also had some other nice things on offer. MCA prototype boards. I do wonder if there is still some in some warehouse somewhere

What is a tube but a miserable pile of glass?

Probing this: it extracts the V and H sync pulses from the composite signal.
So despite what the label says, I think the actual CRT unit is not TTL but just luma, H and V syncs. To make it TTL a different board like this would be required.

Curbside TV on the bench. I thought the PSU was bad, but it was just in standby 😂