Assertion: radio's receiver | /r/CapableOf | represent major step
Facets:
value: forwards in performance
type: OTHER
Source sentences:
text: The superhet radio, or to give it is full name, the supersonic heterodyne wireless receiver represented a major step forwards in performance, but initially it was not widely used, partly because it was invented at the end of the First World War, and secondly because it used a lot of valves / tubes and these were very expensive at this time.