Guy Olinger wrote:
** What was the station and location? This allows us to view the location
ourselves with Goggle Earth and other tools. etc etc etc
The data I posted was sent to me as a courtesy by the consulting engineer
who measured and compiled it. He performed these measurements as a paid
service, for submission to the FCC. Revealing the requested details would
not be not appropriate or fair to the client who paid for them.
I will respond to a few of Guy's comments, although most of this could have
been learned by a more careful reading and consideration of what I posted.
As I stated in my post, the measurements were made at a distance of 2.8 km
from the radiator. That distance is 5 wavelengths from a MW broadcast
monopole on 540 kHz, and almost 16 wavelengths at 1700 kHz.
At a distance of 2.8 km, the elevation range over which the measurements
were made was zero to 3 degrees (as posted). It would be the same
regardless of the height of the monopole.
As I posted, the path length is so short that earth conductivity will have
little affect on the measurements. That is why a short path length was used
for these measurements.
This consultant has made helicopter measurements of 4-5 other MW stations,
but I would not expect them to show anything different in principle than
what I already posted.
The measured fields by the consultant show that no "notch" exists in the
elevation pattern of that monopole from 0-3 degrees. Nor would one appear
in the elevation pattern of ANY monopole up to 5/8-wave in height.
_______________________________________________
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