Jose (et al), I respectfully and strongly disagree that this QST article applies to 160m to the degree described in that PDF (which does not even mention 160 meters!). I DO agree with the findings in that PDF *for those higher bands*.
However, I do agree that it's probably a bad idea to have the vertical portion of an inverted-L stapled to a tree trunk. :-) The effects of nearby trees or woods and their attenuation at 160m have been discussed to a great length here in the past by many Topbanders far more experienced than I am. Before anyone takes exception to what I am saying, please do a search in the Topband Reflector Archive for "trees", "woods", etc. My inverted-L (http://www.w0btu.com/160_meters.html) was in a dense woods of oak trees, and anecdotally I can say that it worked very well indeed, thank you very much! And it'll be back up before winter. :-) 73, Mike www.w0btu.com On Sun, Sep 23, 2018 at 11:19 AM JC <[email protected]> wrote: > Hi Ed > > One of most impressive study about Tree and antenna performance was > presented few month ago by Dr. Kay Siwiak, KE4PT during the South Florida > DX > association. The study was based on years or resources at Motorola about RF > on living body. > > Live tree does affect RF performance. There are more information on QST Feb > 2018 pg 35 to 39 , Kai Siwiak, E4PT,and Richard Quick, W4RQ > > Here you can download the presentation > > > https://qsl.net/k4fk/presentations/2018-May-02-KE4PT-LiveTrees-SFDXA.pdf > > Very interesting stuff. I love the last comments on page 18 > > "In Practice, everything works, but we don't know why" > > " In Theory, we know everything, but nothing works" > > We combine Theory and Practice: > NOTHING WORKS, AND WE DON'T KNOW WHY! > > > 73's > JC > > -----Original Message----- > From: Topband [mailto:[email protected]] On Behalf Of Edward > via Topband > Sent: Sunday, September 23, 2018 1:40 AM > To: [email protected] > Subject: Topband: Inv L in Tree > > Has anybody snaked a wire up a tall tree trunk to make an Inv L? > > Any interaction? Success?? Has to be stealthy because the tree os my > neighbor's :-) > > Thanks, > Ed NI6S > _________________ > Topband Reflector Archives - http://www.contesting.com/_topband > > _________________ > Topband Reflector Archives - http://www.contesting.com/_topband > _________________ Topband Reflector Archives - http://www.contesting.com/_topband
