Before revision: Tellurometer Model M/RA-1 History The original tellurometer, known as the Micro-Distancer MRA 1, was introduced in 1957.Tellurometer MRA 1 It was invented by Trevor Wadley of the Telecommunications Research Laboratory of the South African Council for Scientific and Industrial Research (CSIR), also responsible for the Wadley Loop receiver, which allowed precision tuning over wide bands, a task that had previously required switching out multiple crystals.Wadley Loop HF receivers Methodology The tellurometer emits a microwave-frequency radio wave: the remote station reradiates the incoming wave in a similar wave of more complex modulation, and the resulting phase shift is a measure of the distance travelled.
After revision: Tellurometer modelTellurometer model MRB2 M/RA-1 History The original tellurometer, known as the Micro-Distancer MRA 1, was introduced in 1957.Tellurometer MRA 1 It was invented by Trevor Wadley of the Telecommunications Research Laboratory of the South African Council for Scientific and Industrial Research (CSIR), also responsible for the Wadley Loop receiver, which allowed precision tuning over wide bands, a task that had previously required switching out multiple crystals.Wadley Loop HF receivers Methodology The tellurometer emits a microwave-frequency radio wave: the remote station reradiates the incoming wave in a similar wave of more complex modulation, and the resulting phase shift is a measure of the distance travelled.