The effect is also present with monitor at zero. In this condition, a
rushing sound is heard. At a guess I would say it is digitally induced
noise.
Mode: cw, paddle sending string of dots or dashes any speed
power o/p: any, ie nil to max, dummy or antenna
filter: any, but more pronounced >1kHz
listening to side tone on phones or speaker
audio control: max
rf control: start low and raise until the artefact appears
or
rf: max
audio: low and raise until the artefact appears
at low speed the artefact sounds like a scraping noise riding on the string.
High speed it's like an extra edge.
Anyone confirm this, offer an explanation?
David
G3UNA
K3 #547
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