NO. 4660 (Model 9C)

The Atwater Kent No. 4660 Model 9C, also known as the "Compact 9," was introduced in 1924. A key technological advancement in the Model 9C was the replacement of the variometers with more stable and efficient variable condensers. The Model 9C typically employed a four-tube circuit, utilizing one UX-201A tube for the radio frequency amplifier, a UX-200 tube as the detector, and two UX-201A tubes for the two stages of audio frequency amplification, a common configuration for high-quality receivers of the era. More closely resembling the No. 4700 Model 10C, the No. 4660 had one fewer radio frequency amplifier stages. Board dimensions are 20-1/2" x 10".

Image Courtesy of Grant Kornberg, Technogallerie

Image Courtesy of Grant Kornberg, Technogallerie

Image Courtesy of Grant Kornberg, Technogallerie

Image Courtesy of Grant Kornberg, Technogallerie

Image Courtesy of John Jenkins | Visit the SparkMuseum!

Wonderful working example of AK 9C - Image Courtesy of Jeffrey Rehkopf