Kellogg SwitchBoard & Supply Co. 533 Get a print! $8.00 Add to Cart Product Information: Model:533 Manufacturer:Kellogg SwitchBoard & Supply Co. Schematic Pages Page 1 Schematics Content Page 1: RADIO CIRCUIT KELLOGG SCREEN GRID RECEIVER 3 Stage C.F. Det, and 1st A.F. Stage MODELS - 533-534 AC, Please note: we carry a wide range of products which will fulfill the specifications above. Please use our search function or browse our products to find what you need!