KnowraCrystal radioLinked fromLinked fromThe 5 pages that link to Crystal radio, each with the reason it gives.All 5Broader topic 1Related 1Compared with 3Lee de ForestCompared with: Unlike the Audion, crystal receivers detected signals without electronic amplification.Crystal oscillatorCompared with: Despite its name, a crystal radio’s detector crystal is not a crystal oscillator.John Ambrose FlemingCompared with: Crystal detectors were an alternative to the Fleming valve for rectifying received radio signals.