For DX we are interested in elevation angles from 3-15 degrees. How much
error is there in a NEC model of a monopole at these elevations?
Dave WX7G
The issue here is one of measurement distance and the assumed flat earth,
and how much the ground wave contributes to low angle radiation. We
obviously know radiation at zero degrees is not zero, as distant models
show.
I'm not sure anyone has actually measured wave angle of typical signals, or
actually measured how much very low angle fields contribute to the low angle
radiation.
Without measurements, we don't have solid theory. We have postulation, even
if based on science.
73 Tom
_______________________________________________
Topband reflector - topband@contesting.com
|