Yeah, it was a weird 1988 NEC 32 in. RGB monitor that had an RF input, two RGB ports for PCs and 4 other inputs that looked to be the old style of DIN inputs, about eight or nine pins.
It worked really well with the 1987 stereo I had that also got fried with the brownout caused by a tree.
Also, I use a switch box that came from Radio Shack in the 90s according to my dad and a coax cable due to the Atari switch box being MIA after 2.4 decades.