[Elecraft] HI CUR on 15 meters

[Cathy James]

While experimenting with 15 meters today, I noticed that when 
transmitting a CQ at 10 watts, HI CUR would appear intermittently on the 
display.  I have never seen this on the lower bands (20 meters and down) 
where I do 99% of my operating.  Turning the power down to 8 watts on 15 
meters makes the problem go away.

Any ideas?  Do I just have the threshold set too low?

BTW, thanks to those who pointed out, in response to my earlier question 
about silence on 20 meters, that the problem was likely just propagation 
rather than the unit.  They were definitely correct, and I've worked a 
lot of 20 meter contacts since then.

Cathy
N5WVR