Avalon Radio Co. 4 Get a print! $8.00 Add to Cart Product Information: Model:4 Manufacturer:Avalon Radio Co. Description:tube AC-DC Schematic Pages Page 1 Schematics Content Page 1: AVALON RADIO CO. MODEL 4 Tube AC - DC 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!