On 2/14/17 10:41 AM, Ed Sawyer wrote:
There is no one perfect height for the "South facing yagi" for DX
Contesting.
Is it a Carib antenna, a zone 7 antenna, a PY/LU/CE antenna? Those are
different heights for optimum angle for each band. One beam at one height
for 3 bands - whether a tribander or an LPDA - is always going to be a
compromise. Pick which thing is the most important on the most important
band and place it there, the rest will be what they are.
Pretty soon you're at the W6AM rhombic farm approach, with a big
selector switch to distinguish between Haiti and Dominican Republic, and
so forth
At work today, we were discussing automating the height changes of an
array of telescoping towers (with LPDAs) for this kind of reason.
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|