Hi Guys, I have just updated my antenna comparison chart with some enlightening plots that show antenna comparison in 3D. Interestingly enough my experience is as you get to the higher RDF antennas each dB seems to be very important. Frank is quite right , One can never have enough receiving antennas. Plots at http://www.hizantennas.com/receiving_antennacomparison_char.htm
Lee K7TJR OR -----Original Message----- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of donov...@starpower.net Sent: Wednesday, January 13, 2016 10:47 AM To: topband <topband@contesting.com> Cc: Bill Hider <n...@erols.com>; Mike Waters <mikew...@gmail.com> Subject: Re: Topband: 4SQ vs. 8 circle rcv Hi Mike, Beverages, four squares and 8-circle arrays are all excellent receiving antennas. Based on much on the air experience, my W8JI passive 8-circle BSEF arrays have much narrower beam width than my 580 foot Beverages and especially compared to the broad beam width my full size transmitting 4-square. M y 8-circle arrays also have very low side lobe levels. The 8-circle has a high RDF value because of its narrow beam width and low side lobe levels. Every year we make many QSOs using the 8-circle array that could not have been made with any of my other receiving antennas; however probably 99% of my QSOs could have been easily made with either a Beverage or the 4-square. It just depends on how important that one percent is to you. You can never have too many antennas... 73 Frank W3LPL ----- Original Message ----- From: "Mike Waters" <mikew...@gmail.com> To: "Bill Hider" <n...@erols.com> Cc: "topband" <topband@contesting.com> Sent: Wednesday, January 13, 2016 2:56:07 PM Subject: Re: Topband: 4SQ vs. 8 circle rcv According to what I read there, there is little difference between the two. That seems odd. Was some information left out, or did I read the wrong .pptx file? 73, Mike www.w0btu.com On Wed, Jan 13, 2016 at 1:23 AM, Bill Hider <n...@erols.com> wrote: > This presentation is titled: "Receiving Antennas" ... : > > http://www.contestuniversity.com/main/page_files.html > > This presentation answers all of your stated questions and more. > _________________ Topband Reflector Archives - http://www.contesting.com/_topband _________________ Topband Reflector Archives - http://www.contesting.com/_topband _________________ Topband Reflector Archives - http://www.contesting.com/_topband
