Hi Here at south OH-land (not Ohio) a dipole like this needs to start with 80 mm / 3 inch tubing with 3 mm walls. As tubing resistance to bending goes with 4th power of the outer radius, any extra mm
All I remember a tower work video where the comments mention that OSHA allows for free climbing if so required by the job. Naturally the video is about free climbing at the tip of a 2000 foot tower.
I have a four stack of tribanders on two different towers and one of them is with equal length lines to the bottom and the second one is with lines that have a bit of calculations behind them. Those
Hi In reality this works well on just one frequency because you would have one line be physically longer and then also the phase would "rotate" faster at the end of that line. The best rule of thumb
It may not really make too much cable since even on 20 m 1/4 wave in RG-213 type cable is 3.5 meters and you have thus 3.5, 10.5, 17.5 and 24.5 meters to use. And if desired, one can have a feed to
All We had a very rainy fall last year and I noticed a signs of water at an UHF connector. The cable runs some 150 feet up the tower and and the water must have been coming along the cable.NOW I have
Hi Interestingly I can't find any figures for the loss!I can imagine that high F this may be really bad but how about 28 MHz? Markku _______________________________________________ __________________
On "Low Performance Trap Antennas" : Is it really known what is the cause for the apparently very large difference between a correctly designed trap beam, say a TH6DXX or similar and one of the not s