Homepage Crypto Spy sets Index USA USSR UK Gladio Other Burst encoders Intercept Covert Radio PC Donate Kits Shop News Events Wanted Contact Links Type A Mk. III (A3) Suitcase spy radio set This wonderfull suitcase radio set was developed and manufactured by the Marconi Company in the UK in 1944, close towards the end of WWII. It was intended as a sucessor to the famous Type 3 Mk.II (B2) which was heavy and bulky.   The Type A Mk.III is in fact a much smaller radio set that could easily be fitted inside a child's suitcase. It was supplied either in a fiberboard case, together with a 'spares' box, or in two water-tight containers. Unfortunately, the case and the spares box are missing from the one shown here. It was clearly developed by the same team that developed the Type A Mk.I and Mk.II sets, but technically the Mk.III is very different from these radios.    The unit has a built-in transformer and vibrator, so that it can be powered from either the AC mains (100-130V or 200-250V, 40-60Hz) or an external 6V battery. The set roughly covers all frequencies between 5 and 9 MHz, divided over two ranges (blue and red) and has an intermediate frequency (IF) of 1.2 MHz. The transmitter has a maximum power output of 5W.   References Louis Meulstee, Wireless for the Warrior, volume 4 ISBN 0952063-36-0, September 2004 Further information Other UK spy sets Other spy sets Any links shown in red are currently unavailable. If you like this website, why not make a donation? © Copyright 2009-2011, Paul Reuvers & Marc Simons. Last changed: Tue,12 Apr 2011.22:37:27