More as an experiment and a thought-provoker than anything else, I've
started adding 50-60-foot, on-the-ground radials to my 135-foot inverted
L. In the latest incarnation I'm up to 4 radials. On my ancient
MFJ-259B the lowest SWR is 1.3:1 at 1825 KHz, with an R of 77. X=0 (the
259B doesn't give the sign of j) from 1808 to1894, which I assume is
roughly centered on the actual cross-over point.
With my rudimentary knowledge of such things, I'm guessing that there
remains something on the order of 50 ohms of ground resistance to be
reduced for efficiency, through addition of radials. Question is,
would I profit most by adding another 4 50-60 foot radials, or 2 radials
each 100-120 feet?
Comments appreciated.
--
73, Pete N4ZR
Check out the Reverse Beacon Network
at <http://reversebeacon.net>, now
spotting RTTY activity worldwide.
For spots, please use your favorite
"retail" DX cluster.
_________________
Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
|