Hi Mike,
OK, let's reset here. Which mode are you seeing this with? Please use
Audacity to record a 16-bit 48,000 Hz .WAV file being generated by
WSJT-X using VAC. Also check VAC is using 48,000 16-bit as well. Make
sure you have the latest version of VAC (4.65.0). We can start by
analysing the .WAV file for problems.
73
Bill
G4WJS.
On 14/02/2021 18:45, Black Michael via wsjt-devel wrote:
Sorry to confuse....
The receive was showing the effect of the bad Tx signal that has
artifacts.
I did another test on Tx to show you it's occurring there.
It's the Tx being clipped....JTDX does something like 95% or 90% of
max value and does not have the problem.
BTW...the windows playback level does affect it on the 7300...dropping
below 0dB cleans it up.
On my system the playback level doesn't affect the behavior so perhaps
the VAC is contributing too. 0dB doesn't mean 0dB?
Mike W9MDB
On Sunday, February 14, 2021, 12:32:49 PM CST, Bill Somerville
<g4...@classdesign.com> wrote:
On 14/02/2021 18:22, Black Michael via wsjt-devel wrote:
I just confirmed this same problem on an IC-7300 via the USB audio.
You can see the hash noise on the waterfall.
Seems we need to reduce the maximum amplitude WSJT-X generates.
Adjusting the Windows playback level does not affect the behavior.
Mike W9MDB
Mike,
two messages ago you were confirming you had an issue with Rx audio,
now you are saying Tx levels need to change. Which is it?
73
Bill
G4WJS.
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