For high wind environments, add the R8GK Guy kit-three point non-conductive guy system. Most of the handbooks have designs in them, so you don't have far to look. Phasing Pairs of Rhombics. How about a very simple wire antenna used by a lot of the top contesters? They usually use a switch box in the shack that also lets them feed both antennas. Tri-band, 4 element beam, 21 ft. Like the TAs, the PROs are the best performing, reliable and cost effective multi frequency antennas on the market.
Mosley Antenna, poloostrov.info
Have a PRO and want to upgrade? You must log in or sign up to reply here. The vertical tube is the mast and horizontal is the boom section. From what I can see in the photos, your mast is built from telescoping steel square section, can you share with me the dimensions and general design. Rugged construction and designed for the amateur with a limited space and a tight budget.
Using open wire feed, minimum 4 ft longer is Ok, but remember it is a part of the antenna at frequencies under 21 MHz , will give an easy match from 14 MHz and up. It can be installed and you can be on the air in about 90 seconds! Used aluminium tubing works just as well as brand new tubing. The two sizes are generally not compatible for sections to slide into each other. The second pointed off with a 30 or 40 degree rise should provide longer distance. In addition, the LBM series of antenna design has been optimized to provide excellent performance at only 30 feet above the ground. Another is placed through the boom and plate.