OK, I built my own 4:1 Guanella current balun using two FT240-61 cores and #14 solid copper insulated wire, got the wires attached - 44' and 89' with some extra folded back on the ends for fine tuning, and getting good results so far on the air. The swr on 80 meters is only down to 2.3:1 at 3.5 MHz, but I will be tweaking the feed point position to tray and get that lower. On the other bands, 40, 20, 17, 12, and 10 meters its 2:1 or less except for the upper end of 10 where it steadily climbs upwards to about 3:1 which is normal. Anyway, been working some DX with it on 40 meters and having a lot of fun experimenting with it.
Looking at the inside of the balun I can tell you do nice work.
6 Bands and no tuner, plus not very visible to the neighbors. That's a nice antenna you've got there.
Quote from: cockpitbob on January 28, 2015, 01:47:59 PM
Looking at the inside of the balun I can tell you do nice work.
6 Bands and no tuner, plus not very visible to the neighbors. That's a nice antenna you've got there.
I don't worry about the neighbors noticing my antenna, cows don't care how much wire you hang up ! 8)
Nice work.