This is my 6m. 4el yagi design by Popa,YU7EF.
Boom is 20x20mm square tube, and elements are12 & 10 mm Al. tube.
All elements and dipol are isolated from the boom.The elements are bonded with plastic brackets, and they are mounted on Al. plates with screws and clamped to the boom.
RF Choke is made of 12 turns of RG-58 cable to the 55mm plastic pipe, and can "survive" 300 watts PEP.
Construction of this antenna is the same as for 70MHz. Yagi.
One way of assembling an isolated Dipole
Boom is a 20X20 square tube, 4m. long and elements are 12mm Al. tubing.New home made PVC brackets will make Antenna lighter.RC Choke is is the same as the previous model of yagi.
Antenna is finally completed and placed on the roof of my building. First impressions are great!. After a month of work on 6m. band with this yagi , I can say that I am very satisfied!
This Yagi is made of 25x25mm square Al. tube 4.5m long, and all elements are 14mm tubes.As in any design YU7EF all elements and dipole are insulated from the boom.The idea is to use these antennas in contests. Therefore, RF CHOKE is made of teflon coax cable RG-142B/U and can handle 1000 Watts PEP.
If you want to build this Yagis-s and have any questions, please feel free to send me an e-mail. . .