This was one of the most notorious of all the trasceivers used by the partisan clandestine radio operators during WWII.  The Paraset (Paratrooper radio set) was dropped in with their operators behind enemy lines and were some of the  most compact and portable communications devices in the world at the time.  They HAD to be.  Often transported  in food baskets, suitcases, and other obscure places, the Paraset MK-VII could be employed for very brief transmission, and then packed up and carried away until the next mission.  A fascinating piece of history.

paraset-clandestine-spy-radio_new

I plan on building one of these over the next year.  Today’s equivalent would be something along the lines of a LNR Precision Mountain Topper radio, which is about the size of a pack of cigarettes. I hope you enjoy this, and perhaps one day we may see a nostalgic Spy Radio group form among AmRRON, and we can enjoy the thrill of holding nets using only portable clandestine replicas of the spy radios of a bygone era.
-JJS

From Wikipedia:
The Paraset was a small, low-power, thermionic valve CW morse code-only radio transmitter-receiver supplied to the resistance groups in France, Belgium and the Netherlands during World War II.  The Paraset was one of the first successful miniaturized radio sets for Britain’s Special Operations Executive which conducted espionage and other activities behind German lines during World War II.  The set, known as the Whaddon Mark VII, was used for clandestine radio communication primarily in Norway and Europe, developed at the Royal Signals Special Communications Unit workshops at Little Horwood and the workshops of Whaddon Hall, Buckinghamshire in the early stages of World War II. The equipment is known as the “Paraset” because it was dropped by parachute for field agents.

 

Excellent articles and web resources about the MK-7  Paraset transceiver.
Paraset serial #2357
The Whaddon Mk VII – Paraset Clandestine Radio
Whaddon Radio Set Mk VII “Paraset”

Youtube Videos:
EMPLOYMENT OF WW2 CLANDENSTINE RADIO TYPE 3. MK. II
PARASET- MK7 de F6BYS

Building your own replica Paraset MK VII:
http://www.paraset.nl/
http://www.paraset.nl/hut12_warehouse/index.htm