well, I bought a 1976 JCPenney 9 Inch color Tv with channels 2-13 VHF and 14-83 UHF. it has a knob controls for brightness, Contrast, Color level, Tint, Vertical hold and vertical Linear, Vertical Height, Vertical Sync, Hrizontal hold, Horizontal frequency, Chroma, Blue Scrn, Red Scrn, Green Scrn, Blue Drive, Green Drive, Vertical Sync 2nd stage, Focus, Screen