[BC] 540 kHz vs 1600 kHz

[Richard Fry]

DANA PUOPOLO
> An old friend (Chris Hood) from Pittsburgh once showed me
> a curve that estimated ND power vs Frequency to the
> 1.0 mV/m contour. 250 watts at 540 and 25 kW on 1600
> were roughly the same.
____________

True -- for a conductivity of 8 mS/m and 1/4 wave radiators, its 45 miles
for the 540 and 43.5 miles for the 1600.

Looking at it against a max 50 kW non-D on 1600 kHz, for 8 mS/m paths and
1/4-wave towers, it takes only 380 watts on 540 for exactly* equal distance
to the 1 mV/m contour (50.9 miles).

  *to one decimal place

RF, and sorry for the crosspost to RT