[RFI] Powerline noise humps?

[Charles Coldwell]

On Wed, May 11, 2016 at 8:40 AM, JW via RFI <rfi at contesting.com> wrote:
> ... manufacturers today are employing 'clock dithering techniques' to avoid any specific, individual, high amplitude single-frequency emissions

Also known as "spread spectrum clocking" (a nice search-engine term).
Lots of PLLs on the market advertise this feature.  USB 3.0 uses it on
the high-speed conductors to avoid the need for shielded cables.

-- 
Charles M. Coldwell, W1CMC
Belmont, Massachusetts, New England
"Turn on, log in, tune out"