On Wed, July 19, 2017 1:57 pm, John R Pierce wrote:
On 7/19/2017 11:41 AM, Chris Olson wrote:
Software Defined Radio
I wouldn't want to use SDR as a simple time source.... SDR uses a /lot/ of CPU to make up for the lack of radio hardware. It would make far more sense to get a dedicated WWV or GPS reciever to use as a time reference, unless you're going to dedicate a server just to be a software radio.
I would second that and also would add that SDR adds latency to what gets on its output, the last grossly depends on system load, and is affected by system scheduler etc, hence, IMHO SDR is poor device to time synchronization in general.
Valeri
-- john r pierce, recycling bits in santa cruz
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++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++