Assertion: radar detector | /r/CapableOf | use a superheterodyne receiver
Facets:
value: to detect these electromagnetic emissions
type: PURPOSE
Source sentences:
text: Radar detectors use a superheterodyne receiver to detect these electromagnetic emissions from the gun, and raise an alarm to notify the motorist when a transmission is detected.
text: Using a superheterodyne receiver, radar detectors can pick up the radio frequencies radars use when they bounce waves off an object to determine the speed (known as the Doppler effect).