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Volume slowly decreases with two slices open and not listening to a station

Member ✭✭
edited February 2019 in SmartSDR for Windows
I rarely listen with two slices open however this time I was focusing on getting my Mic configured using the FDX mode.

After about 10 minutes I started to hear the volume levels slowly decrease till I heard almost nothing then it increased.  Both the S meter and spectrum showed no difference thus why it seemed to me to be a volume issue.

When I changed to where a station was transmitting the volume quickly jumped back up to normal.  But if I left both in the white noise it would happen.  It was reproducible during the same session almost all the time.  When I closed one slice I have not seen this issue.

I will keep on the look out for this phenomenon but has anyone else seen this?

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Comments

  • Member ✭✭
    edited June 2016
    Hmmm.  I'm wondering if you aren't seeing AGC action with one or both slices.  Check the volume and AGC sliders: image
  • Member ✭✭✭
    edited February 2019
    If both slices are on the same frequency, you could be seeing phase cancellation, with he cycling rate equal to the (very small) difference in tuning.
  • Member ✭✭
    edited February 2017
    George,  I suspected this...

    Jim,  I did.. In fact moving the AGC made no difference.
  • Member ✭✭
    edited February 2017
    I don't notice volume slowly decreasing but I have noticed volume seems to favor my left or right channel slightly when I switch side bands.  Is this normal?  
  • Member ✭✭
    edited November 2016
    In the case of split operations, for instance, should the tx slice have its volume muted the rx slice volume is louder. There was a question on this a year or so back. Similarly, if you were monitoring beacons on 2 or more pans each unmuted slice reduces the volume of other unmuted slices. I've never noticed a 'over elapsed time' decreasing volume.

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