United States Television Mfg. Co. 526 Get a print! $7.20 Add to Cart Product Information: Model:526 Manufacturer:United States Television Mfg. Co. Schematic Pages Page 1 Schematics Content Page 1: INTERMEDIATE FREQUENCY 455 Kc. 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!