[Elecraft] P3 clicking sound

[Dave Perry N4QS]

To all,

Received my P3 last week and love it.  Just one small issue.  There is a very soft but noticeable clicking sound when I am using the P3/K3 on the low bands -- 80 and 160M.  The click repeats itself about every 7 or 8 seconds.  Sounds like a relay within the P3.  I only hear it on those two bands.  Does anyone know what this is and/or how to stop it.

Thanks,

Dave, N4QS