Since actual RF ground could be almost anywhere (and could be definitive
or graded) depending upon your soil, practically speaking the difference
between 12' and 10' is a meaningless distinction.
The height above actual ground will of course moderately affect the
input impedance, but you're not going to know what that is ahead of time
and to be rigorous you would want to adjust the terminating resistance
for a more or less constant impedance as a function of frequency ... and
then set the turns ratio of the coupling transformer to match.
Personally, I think being THAT rigorous isn't all that rational. Put
your wire at 12' and use whatever input transformer and termination you
already planned.
73,
Dave AB7E
On 8/31/2021 5:56 PM, RVZ via TowerTalk wrote:
Wondering if anyone has had good success with a Beverage mounted 12' above ground?
12' is the minimum clearance I need to safely clear a drive way. Please reply
direct as I hope to install tomorrow.
Thanks in advance for your reply! 73, Dick- K9OMRLVZ@aol.com
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|