I
simulated the fence wire with MMANA.
On HF (80m, 40m) I got the
expected (bi)directivity and low offset angle.
But on 500kHz the horizontal
pattern is almost omnidirectional and
the offset angle is 78
degrees.
It seems that (at least in theory) even 1200 foot is too short to
be
long on 500kHz ...
Or does MMANA not work properly
?
--------------------------------
If you accept the commonly held definition that a long wire should be
at least a wavelength long at the desired frequency that implies that at 500 KHz
it should be 600 metres, which is approximately 1960 feet.
On that basis 1200 feet is going to be a bit short to be strictly
considered a "long wire" on 500 KHz, but I certainly wouldn't mind having that
much room to play with:-)
regards
Nigel
GM8PZR
