The Catkin valve was a domestic version of the transmitting cooled anode valves. A great idea that foundered on the difficulties of mass production.
Catkin Valves an introduction.
The Metal Valve, John Scott-Taggart, The Manual of Modern Radio, 1933.
The Remarkable Catkin, PW Research Department Popular Wireless, May 1, 1933.
The Catkin Valve, The Wireless World, May 19, 1933.
A Great New Valve Development, PW Research Department Popular Wireless, May 27, 1933.
Index of Exhibits