Michael A. Terrell wrote:
Not to be picky, Mark, but it is MHz and KHz. A mHz is .000001 Hz
(277.778 hours per cycle) and a kHz is .001 Hz (16.667 seconds per
cycle).

Now Mike ... I agree with you about capital letters for Mega and Kilo.
But I'm pretty sure that mHz is milli-Hz, not micro-Hz.

Bill