A whole lot of those home computers got used with old vacuum tube sets. I used a B&W GE portable tube set with my VIC-20.
There are a lot of NOS television and radio tubes out there, and they are mostly less expensive than the ones used in guitar amplifiers and hi-fi equipment.
There are a lot of NOS television and radio tubes out there, and they are mostly less expensive than the ones used in guitar amplifiers and hi-fi equipment.