Steve G3TXQ wrote:
>>> Here are the resonant frequencies I measured of a 10m half-wave dipole on a
>>> telescopic push-up mast at various heights above ground in my back yard:
Using a dipole model with a 1" diameter aluminum wire over "Very Good" EZNEC
ground, I adjusted the length to match the G3TXQ measured resonant frequency at
the 15 ft height. That made the length 15.28 ft or ~0.47 WL. Then I
calculated the theoretical resonant frequency at other heights from 5 to 25 ft.
http://s33.postimg.org/oqqqmprhr/resonate7.png
Note that I did *not* force the almost perfect correlation at the 25 ft height.
Dan, AC6LA
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|
