The detail from the schematic above has the initial date 7th January. Inbusiness magazine Inc. Retrieved December 26, Some of the pots are replacements, but the one indicated is original and bears the code "GL". May 4,
Later AC50s did away with the rectifier. In AprilVox Media and NBCUniversal launched Concert as a "premium, brand-friendly ad network" to reach more than million people across their digital properties.