Black Radios Home Page Radio Manufacturers Index Black Radios Document Index Historical Roots in Brief
Watkins-Johnson Home Page Supporting this Research WJ & CEI Document Index Clearance
WJ-CEI Home Page My Publications Research Material Donations Bio and Contact

F. G. Mason Engineering

Mason documents






Mason Engineering was a custom shop producing specialized equipment in small quantities. Many of their products were in briefcases and suitcases.

In addition to radios, they also made equiopment for detecting taps on telephone lines and equipment.