[Elecraft] P3 question

[Fred Jensen]

I run my P3 in fixed-tune mode [span edges stay fixed, cursor moves as I 
tune].  Every now and then, the span edges will jump in frequency.  For 
example, with span=20KHz and edges=21.020/21.040, at some point the 
edges will be 21.025/21.045  I've never caught it in the act and I can't 
make it happen, it just does it when I'm not watching.  Anyone know 
what's going on?

For the record, Elecraft cables: KUSB [laptop]-->P3-->K3.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org