1942 – Radar on a Pyramid

This poster is from a set of 39 developed for an exhibition  by MRATHS (Malvern Radar And Technology History Society) and sponsored by MHDC’s Route to the Hills initiative in Summer 2016.


LW set on pyramid 1942_resizeClick to enlarge

In 1941, to meet the need for a portable R.D.F. (Radar) warning set in the field to detect approaching aircraft, a number of ‘pack-sets’ were constructed using standard Air to Surface Vessel – ASV (aircraft to ship) radar units. The range was limited to 15-20 miles for aircraft flying at 10,000 feet.

In January 1942, TRE commenced preliminary work to produce an improved light warning set (LWS). This picture gives general  view of an LW Set installation in a vehicle.

py1 72dpi

The new set was designed to work at a frequency of 176MHz. The transmitter and aerials were developed at Metropolitan Vickers. TRE developed a nine-inch radar operator display (Plan Position Indicator – PPI).  Designs for turning gear and aerials were largely taken over by TRE. The receiver was a standard 1½ meter ASV equipment.

py3 72dpi
TRE Scientist Dennis Wormald stands in front of a LWS which he deployed in Crete before the German airborne invasion.

py4 72dpi
In August 1942 Winston Churchill visited UK troops in Egypt prior to the Battle of El-Alamein. As part of his protection a LW Set was installed on the top of the Great Pyramid.

© IWM (E 15391)

This article Copyright  © 2012  Mike S Dean , © MRATHS 2016

Exhibition Main Page