Re: USB cable quality and QRM in a spyserver setup with an Airspy Hf+ and Raspberry PI3. 6 microUSB cable test. #airspyhfplus #bestpractice #raspberrypi

Roberto Zinelli

Yes, a traditional stabilized power supply solved also mine noise problem

On Thu, Feb 21, 2019 at 7:13 PM <iz5dkm@...> wrote:
  Also I had usb noise problems and I solved by self-building a cable with two rg174 for I / O signals and powering the sdr with a second stabilized power supply (no switching).
Much noise has disappeared.

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