View Single Post
  #1   Report Post  
Old July 3rd 08, 05:08 PM posted to rec.radio.amateur.antenna
Art Unwin Art Unwin is offline
external usenet poster
 
First recorded activity by RadioBanter: Mar 2008
Posts: 1,339
Default Radiation and dummy loads

I am trying to understand why a low swr repetitive over a band of
frequencies is considered by hams to be a dummy load.! This
consistently shows up in statements by the itelligensia of this
newsgroup. Following up on the logic of that idea it would suggest
that if swr was totally constant ( not sure how that could be) then
all radiation must be zero or self cancelling.?
This thus suggests that if a log periodic antenna was unlimitted in
the number of elements used would in the limit drop down to zero
radiation!. So following the thinking of this group the oscillations
that I show on my page

unwinantennas.com/

as a progression towards zero radiation since Q eventually is going to
equal zero.
Is this why the decreasing oscillation is defined as a dummy load on
this newsgroup?
The term comes up so often that I am compelled to look for what I am
missing, especially since carbon
is conductive and thus in the minds of many must therefore be
radiative!
Ofcourse the statement bandied around that if a material is
condunctive then it must radiatiate
could become fact instead of an old wives tales if stated enough
times.
Art