[hpsdr] about latency growth with HPSDR

[Riho B., ES7AAZ]

Hi,

I have a program called Faros which is a beacon monitor.
Faros gets his time sync from ntp GPS time servers.
NCDXF network beacons have GPS dicsiplined controller
which allows path delay calculation and Faros does it.

After 2h running I see 120ms latency growth (linear graph)
and it's growing on. Which means that radio waves are traveling
about one  more circle around the world. It can't be so. Restarting
PowerSDR brings the latency back to its initial state. Exactly the same
effect with CWSkimmer console. It's almost same vith VAC and with
analog audio cable.

The question is not even about latency itself or how much it is.
The question is why's latency growing and how much it does?
  Is it somewhere in USB connection ?  I'm Ozy user.



73,
Riho, ES7AAZ
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