AVIONICS
Low-noise Tube May Boost Radar Range
Chicago—Remarkably low-noise, highgain vacuum tube for amplifying VHF, UHF and microwave frequencies, which employs a fundamentally new principle, has been developed here by Zenith Radio Corp. scientists. The new device, called a Fast-wave Transverse-field Parametric Amplifier, or Quadrupole Amplifier, holds promise of a major boost in sensitivity of radarradio receivers.
By Philip J. Klass5 min