[Elecraft] K3 audio and rf inter reaction

[David Cutter]

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