Paul, you can use an 80 meter dipole on 40 as you describe. Many have done it with success. However, you may have to fool with it to get it to work, since the antenna is being fed at a very high impedance point.
I assume the balun you're talking about is 4:1. To start, I'd suggest grounding the cold side of the balun to a counterpoise consisting of at least 3 wires 33 feet long strung out in various directions, out the window and lying on the ground if possible. Another helpful measure is to insert an RF isolator (like those available from Radioworks.com). It goes between the balun and the tuner. This is just a 1:1 choke balun which kills off any RF current flowing on the outside of your coax. I'd bet that these two modifications will bring things under control. If not, you may have to try different lengths of feedline, but save that for a last resort. good luck, Tony KT0NY On Wed, May 4, 2011 at 6:49 PM, Paul Agoglia <pagog...@stny.rr.com> wrote: > I ran a transmit test today .... ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html