Crystal Set & NO. 4200 2A Detector

Reproduction Crystal Set - Image Courtesy of by Brian Weber

Reproduction Crystal Set - Images Courtesy of by Brian Weber

Original Type 2A (No. 4200) Detector Image(s) Courtesy of Grant Kornberg, Technogallerie

A photo of the reportedly only known surviving factory-constructed Atwater Kent crystal set—a non-commercial receiver originally provided only to hospitals—and a close-up of its unique Type 2A crystal detector, sourced from an examination of a 1930s traveling exhibit. For more information on the exhibit and the crystal set history, see the August 1989 issue of Antique Radio Classified (ARC), specifically the article titled 'Atwater Kent Crystal Sets - Part 1: Did Atwater Kent Manufacture a Crystal Set?' by Ralph Williams.

Photos courtesy of Jimmy Edington, Atwaterkentsrus

AK Crystal Set - Image Courtesy of John Jenkins | Visit the SparkMuseum!