Lang Radio Co. BD-6 Get a print! $8.00 Add to Cart Product Information: Model:BD-6 Manufacturer:Lang Radio Co. Schematic Pages Page 1 Schematics Content Page 1: SCHEMATIC CIRCUIT BA - 5 A.C. SCHEMATIC CIRCUIT BD6 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!