Author Topic: PDW and VAC Issue  (Read 9564 times)


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PDW and VAC Issue
« on: 30 Jan 2021, 07:54:15 »

Thanks for letting me join this group.

I am using Windows 8.1, an RSPdx receiver (scanning in the 931 MHz band), and a Virtual Audio Cable (VAC not VB cable).

The issue I am having is after 12 hours or so of decoding, the percentage shown in PDW drops from a solid 100% to the 70s through lower 90s (rising and falling).  The only fix I have come up with is to run the VAC control panel as an admin and then Reset Audio Engine, while my SDR software is off and PDW is off.  Restarting the SDR and PDW, has me back at 100% (for perhaps 12 hours).

I am suspicious of my VAC may be causing this problem.  It sounds like a buffers issue.  I am attaching a screen capture of my VAC control panel.  Perhaps there is a parameter that needs to be tweaked.  I understand from something I read that the SR for PDW is 44,100.  Should I use that value exactly for the VAC?  I am using VAC Line 3 for this exercise.

Has anyone in this group experienced such an issue?  If so, how have you addressed it?

Any help will be greatly appreciated.

George, NJ3H
Redmond, Oregon USA