Low Noise Amplifiers (LNAs) Advantech’s Low Noise Amplifiers are the low noise, high dynamic range amplifiers suitable for use in satellite earth station receiver applications where ultra low noise and high reliability are critical, as well as in other systems operating in C- or Ka-bands. The LNA combines low noise with high linearity and wide band. FEATURES: Low Noise Temperature Single or Redundant Operation Pressurable W/G Input Weatherproof Housing Two Year Warranty Technical Specifications Model number Frequency range Noise temperature @ 23 ºC Dimensions L x W x H, Inches   C-Band LNA 3.7-4.2 GHz 3.4-4.2 GHz 40ºK 5.6 x 3.8 x 2 .7   Ka-Band LNA 19.7 - 20.2 GHz 18.3 - 20.2 GHz 20.0 - 21.0 GHz 140ºK 5.9 x 3.0 x 2.2