View Single Post
  #480   Report Post  
Old February 21st 04, 09:10 PM
Mark Keith
 
Posts: n/a
Default

"aunwin" wrote in message
If given the the gain at 90 degrees would you interpret that as having zero
over the horizon at say 15 degrees ?. Zero at 30 degrees? I would say that
if an antenna is a cloud warmer it does not necessarily discriminate against
low angle signals so it is not or should not be a statement of derisement.


It's simple to check using eznec. One advantage eznec has over some
other programs as far as the plot...
You do a far field plot, and look at the pattern plot. You will see
max gain at a certain angle. At that angle , at the top of the plot,
you will see a little green ball. You can "grab" that green ball or
marker and drag it down to whatever angle you want to look at. You
could check overhead, at 20 degrees, 10, 5, or whatever angle you want
to see.


Frankly this business of comparing antennas is pretty stupid UNLESS one
prescribes a specific object .


That ain't no joke... MK