Polo Engineering Lab 1A S W Converter Get a print! $8.00 Add to Cart Product Information: Model:1A S W Converter Manufacturer:Polo Engineering Lab (Radolek) Schematic Pages Page 1 Schematics Content Page 1: RAYTHON TELEVISION RECEIVER R.E.L. 231 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!