Thread: Dish reflector
View Single Post
  #74   Report Post  
Old April 14th 09, 08:58 PM posted to rec.radio.amateur.antenna
Cecil Moore[_2_] Cecil Moore[_2_] is offline
external usenet poster
 
First recorded activity by RadioBanter: Mar 2007
Posts: 3,521
Default Dish reflector

JIMMIE wrote:
What would be the difference in the amount of time it takes a pulse to
travel from feedpoint and be reflected back to the feed point
comparing a 1/4 wl 40 meter antenna to a 15ft loaded antenna center
loaded to resonate at 40 meters?


Please don't confuse delay (amount of time) with the
total phase shift. There is a point in a loading coil
antenna where the phase shift is instantaneous.

The total phase shift is *exactly* the same assuming
both antennas are resonant on 40m. How could it possibly
be otherwise?
--
73, Cecil, IEEE, OOTC, http://www.w5dxp.com