Mechanical Television
Jenkins JD-30
In American Sales. Co. 1932 catalog
(click on picture for high resolution image)
The JD-30 is a broadcast/shortwave receiver designed to connect to a scanning disk set with either a flat plate neon or a crater lamp. It was made in 1932, and was sold with the Jenkins R-400 lens disk scanner. Here is more information.
The same receiver in a different cabinet