John, There is not much you can do about the antenna efficiency short of changing the physical characteristics of the antenna itself - if it works, it works and the voltage/current relationship at the feedpoint will determine its impedance and how easily it can be matched.
A balun does not make sense to me with a long wire antenna fed directly out of the tuner, but an efficient and effective RF ground does make a lot of sense. If you suspect any problems with RF feedback, try adding a 1/4 wave wire for each band at the shack (tuner output) location. The wires should be separated at the ends and since they may have a high RF voltage on them, be certain that they are well insulated and cannot be contacted by persons unaware of the danger. 73, Don W3FPR ----- Original Message ----- > I put up a 125' long wire antenna at 35' this weekend. It tunes up well > 10m-80m running directly to the KAT2. I am wondering if I should ad an > unbalaced feedline and a 4:1 current balun between the tuner and antenna. > Would this reduce potential RF in the shack or change the antenna's > efficiency? _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
