Hi Joel, Other than the three Magic T's, what other specific mods have you made to your 8-circles?
Adding a T50-2 toroidal inductor and a BNC connector at the 50 ohm tap makes a quick job of adjusting resonance to exactly 1840 kHz. Much more work is planned later this year, building switchable 8-circles for 160 and 80 meters. Using one inch rebar for the base makes that job a snap, especially in my case where I must completely remove the antenna from my borrowed field every year and reinstall it in October. The rebar can be easily removed with a sledge hammer. I discovered that I couldn't unzip my 16 AWG speaker wire when its cold, I was breaking wires! No problem at all unzipping it at room temperature. Tks for all of your help! 73 Frank W3LPL ---- Original message ---- >Date: Sun, 3 Feb 2013 06:29:18 -0600 >From: Joel Harrison <w...@w5zn.org> >Subject: Re: Topband: New 160M high performance receiving antenna at W3LPL >To: donov...@starpower.net >Cc: topband@contesting.com > > Frank - Good stuff and very glad you made public your work on > the array. > It is good to see the array is working very well at W3LPL. I > continue to have excellent performance from both of my BSEF > arrays (160 & 80 meter versions). > Robye (W1MK) and I had several conversations following > publication of my work on BSEF's which resulted in use of > Magic Tee's and a few other feed point mods. > 73 Joel W5ZN > > On Fri, Feb 1, 2013 at 11:00 AM, <donov...@starpower.net> > wrote: > > My new 160 meter Broad Side - End Fire (BSEF) receiving > array is now in use and performing extremely well, > significantly better than my 900 foot Beverages and full > size 4-square transmitting antenna. > > Like most of us who live in developed areas, my RFI > environment has significantly degraded with the lack of > effective RFI regulation in recent years. Plasma TVs, > ubiquitous poorly filtered switching power supplies and > increasly popular high efficiency motors are steadily > raising our noise floor. With this new antenna 160 meters > is delightfully quiet again at W3LPL! > > Thanks to W8JI, W5ZN, N4HY and W1MK for their efforts in > designing, optimizing and publishing the details of this > wonderful high performance receiving antenna. The BSEF > array is now connected to the 160 meter input to my CW > Skimmer, it now has significantly better sensitivity than > when it was connected to my 900 foot NE Beverage. > > The description and photos of my new BSEF array are here: > > http://pvrc.org/bsef/bsef.html > > 73 > Frank > W3LPL > _________________ > Topband Reflector > > -- > 73 Joel W5ZN > > www.w5zn.org _________________ Topband Reflector