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TOPIC: WSJT-X and VAC noise issue

WSJT-X and VAC noise issue 25 Mar 2020 15:03 #1

  • MM0OKG
  • MM0OKG's Avatar
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  • SunSDR2 pro & ECoder
  • Posts: 4
Hi all,

I am noticing a strange random wideband noise that appears during TX or TUNE in WSJT-X. My setup is:
SunSDR2 pro, ESDR2 v 1.3.1 update 5
VAC (full version)
https://drive.google.com/open?id=1-p7HqPIBczfhqrKD6Kj2k9FuqIh664kD

WSJT-X: V 2.1.2

HP XW6600 workstation Win7 32GB ram. 4% CPU for ESDR2.

ESDR2 VAC settings are:

https://drive.google.com/open?id=1uVO455JXLZLeio11lSuLbI7RQtPACTzi

You can see how it behaves here in the video:


Sometimes during the 15 sec cycle the TX signal goes crazy and seems to glitch. See video attached. This occurs either into a resonant antenna or dummy load, and using TUNE or EnableTX in WSJT-X. Sometimes the the very start of the TX signal looks to be noisy too.

Has anyone seen this before, have a solution or suggestions what settings to check. I may have something set wrong. I have the rig in DIGU mode.
Thanks for any help.
Jonathan
MM0OKG
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