This is an L.C., sweep aligned 16 or 20kc at -3db points, 455kc filter designed to be installed in place of the 16kc mechanical filter in the R-390A. The resultant approximately Gausian passband will eliminate the harshness of the mechanical filter.

• $245.00 - Filter (you install)
  

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Design Notes: Superimposing Low-Phase-Noise, Low-Drift Instrumentation techniques on RF Design
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