Jorge,
I have a 160m antenna asymmetrical antenna, fed against ground, that goes from one corner of my 120 ft by 120 ft lot to the opposite corner. It is held up by a single pole, about 55 ft tall. The pole is closer to the fed end. The wire going up to the pole makes about a 65 degree angle above the horizontal; the wire going down to the opposite corner makes an angle of about 25 degrees below the horizontal (the angles are estimated by eye-they definitely have not been measured). The far end is about 10 ft off the ground. In other words an inverted L where the vertical part is not vertical and the horizontal part is not horizontal. The length is the length arrived at by many trials and errors that, with a matching capacitor between the antenna and one inch hardline coax feeder, yielded an SWR of approximately 1:1 at 1825 mHz. I also use this antenna on 80 m through 10 m by using an antenna tuner in the shack. My radials are about one inch deep in the ground and restricted to one quadrant. They vary in length from 100 ft (along the north and east fence lines) down to 35 ft (house in the way). Number of radials is probably about 20 (I really don't remember). QTH is SE NM. Maximum power is 500 watts. I have 190 countries confirmed on160 m. I have no idea of the pattern of the 160 m antenna. I am guessing that it works as well as it does because the maximum radiation occurs well above ground (and the ground around its feed point is very cluttered by power lines, houses, trees) and is not straight up (like a low inverted dipole). 73 Paul W5DM _________________ Topband Reflector Archives - http://www.contesting.com/_topband
