Keith Dysart wrote:
But for this sub-thread, which started with 90 "electical degrees",
a single frequency seems to me to be strongly implied.

Of course, but handicapping oneself to a steady-state
single sinusoidal frequency is like target shooting
while blindfolded and spinning on a Lazy Susan. Why
enforce a silly arbitrary handicap?
--
73, Cecil http://www.w5dxp.com