Homepage Crypto Spy sets Burst encoders Intercept Covert Radio PC Telex Agencies Manufacturers Donate Kits Shop News Events Wanted Contact Links Mason A1 This page is a stub - Wanted item The A1 was a semi-portable surveillance receiver developed by F.G. Mason Engineering Inc. in Connecticut (USA) in the early 1960s. It was intended for bug-finding applications and was sold exclusively to the US Army. The A1 was followed in 1964, by the A2 receiver of which 1800 units were sold to the US Government and civilian users.   Wanted item At present, we have no image or any further background information of this receiver. If you know more about the A1, please contact us. Your help is much appreciated. Furthermore, if you have a surplus A1 unit available, we'd like to hear from you.   Further information Mason A2, the successor to the A1 reciever Other Mason receivers Other bug finders Any links shown in red are currently unavailable. If you like this website, why not make a donation? © Copyright 2009-2013, Paul Reuvers & Marc Simons. Last changed: Friday, 03 June 2011 - 10:39 CET