Thanks Joe for the additional info. Well Steve N1SG has been able to reproduce the motor boating pretty consistently with his setup. I am not sure, but it may be related in some way to the M-Audio DMA buffer setting on the M-Audio hardware tab, or perhaps interaction with the Console AUDIO BUFFER setting? I can not make it happen with 512 for each, but with the M-Audio at 2048 it seems to happen pretty consistently on CW.
de Ken N9VV

Joe - AB1DO wrote:
I've had it happen on the few occasions when using my foot pedal and
pressing it a little too slowly/hesitantly, making the contacts jitter a
little, so that the SDR rapidly switches between MOX/RX/MOX. Closing down
1.3.8 and restarting it resolved the issue. Using Delta-44 also.
Happens here also, sporadically. Stopping and restarting 1.3.8 also stops
mine. Delta 44 in use.

At 06:11 AM 6/18/2005, you wrote:

Every so often I have a problem where I hit MOX and when the T/R comes
back to RX the receiver is "motor boating" - it sounds like a fast flutter
at about 5 cycles per second. I haven't figured out any setting that will
directly cause whatever is wrong. I assume it is some strange hw setting
in the Delta-44 that is causing it?. The work-around that I found was to
shutdown 1.3.8 and start up 1.3.5 which seems to reset something. Has
anyone figured out what is happening?
TU de Ken N9VV

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