I currently lack any decent antenna for 30 meters and was thinking of putting up a delta loop. I can easily hang it from my tower. My plan was to have the apex at the top and to feed the loop from one of the sides at the bottom in order to get vertical polarization. My primary use will be DX. Using the formula 1005/(freq in Mhz) the total length comes to about 99.26 feet using 10.125 as the center frequency. Therefore each side will be about 33 feet. If I can remember my trigonometry right, the height if the delta was a perfect triangle would be about 28.6 feet from the apex to the bottom horizontal wire. OK, no problem. I don't plan to use the delta on any band other than 30, so I was also planning to make a 1/4 wave matching section of 75 ohm coax then run the distance to the shack with 50 ohm coax. My question is, how high should I position this beast? I've read different things and wonder if anyone has any experience with a similar antenna?? The top of my tower is 89 feet, but I was thinking of hanging it from about 45 to 50 feet or so, so the bottom horizontal leg would be 20 something feet off the ground depending. From what I've read, when vertically polarized the antenna acts somewhat like two verticals in phase. If this is true, then maybe I don't want to place the antenna too high as that might disrupt the pattern?? My goal is to maintain a low angle of radiation for DX purposes. Any ideas of the best height above ground for the lower horizontal portion??