Buckmaster DX-OCF 7 Band Dipole Antenna.



DX-OCF-7:Buckmaster OCF Antennas are made from the best quality materials and are designed to give you years of trouble-free service. No tuner required!
Specifications / Features:
135 ft. models cover 80/75, 40, 20, 17, 12, 10, 6 meters. (metric measurements are 14 meters and 28 meters, totaling 42 meters)
Power rated: 300 Watts
Heavy duty stainless 1/4 inch center threaded, cemented with lock nut eyebolt supports the off center enclosure for years of trouble free service.
The off center insulator has a special drip collar to protect the SO-239 coaxial connector, yet lets moisture evaporate.

Permanently sealed white PVC weatherproof center enclosure containing the potted autotransformer acting as 6:1 voltage balun, high-quality crimps and wire stress relief
Flexible, tinned, 12 gauge, 65 strand, PVC coated copper wire
Crimped on gray end insulators, high-quality crimps, even a cap to protect end of wire!
Special drip collar around the one-piece silvered SO-239 connector with beryllium copper pin.
No trimming – fully assembled, complete and ready to go
No external hardware to loosen or corrode

Installation Info:
Hang the center from an object such as a tree limb or a non-metallic pole. If hanging from a metal tower the antenna needs to be separated from the tower by a non-metallic means such as a standoff pole or hung from the tower with 10 feet of rope and pulled away from the tower with the legs of the antenna

If you don’t have anything to hang the center from, consider using a ‘messenger line’ between two supports (trees, etc.) consisting of a run of good quality, UV protected rope with a pulley at one support. Tie the OCF balun along this line in a spot that works for you (and will allow the balun to be reached from the ground) and run the coax away at a ninety degree angle (as possible). This takes tension off of the antenna legs and the pulley at one support makes it easy to take things down for service or inspection (be sure the rope is long enough). Also be sure to make allowances for support trees swaying in the wind by using a weight such as a gallon milk jug or two and a pulley to handle the movement of the tree supports

Install in a straight line, and at least 10 feet away from any metallic objects such as poles, towers, house wiring, fences, or gutters.
Usually works best as an “inverted-V.” Erecting at least 30 feet above ground is recommended. Each end can droop up to 30 degrees from horizontal, 180-(2*30)=120 degrees total is ideal, but anything from 120 to 180 degrees (flat) should work well. Ends should be 10 feet or more from the ground for safety reasons

Higher is not always better. If the center is mounted too high it can be hard to get the ends high enough to maintain a 120 to 180 degree (flat) angle.