VE6FI got one, may be has some suggestions. Scroll down on his page: http://www3.telus.net/ve6fi/New%20Antennas.htm Perhaps Dons, VE6JY is the same model: http://alfaradio.ca/ve6jy/images/Log1.jpg 73
Although a good resource, the W8JI material doesn't directly apply here. The LPDA that W6DSR describes is in a league of its own with alternating element phasing that occurs inside a lattice truss. T
I e-mailed with VE6FI some time ago after searching to see who else may have one of these antenna systems. He mentioned that they had to add a friction break at the twin tower base to keep the antenn
Its part of the military AS-3515/GRC system which comes with 2 side-by-side towers, with the mast going up from the ground between the towers. The rotor which sits in a saddle between the towers supp
Its very unlikely that it free-wheels with that R3503 rotator which is made with a worm drive gear and chain. But I am not sure what rotator Dennis is using. Too bad that California is that far away
I usually pull my antennas straight up the tower. It is easy for me climb up with a MFJ analyzer and make an accurate assessment before bolting the antenna in place. If I wish to make an adjustment i
Have the crane pick it up a ways and check it with your meter. This is done all of the time. Hopefully since it is a commercial antenna no adjustments will be needed. GL John Well, okay, I'm convince
I agree with John. On a smaller scale that is what I do. I grew weary of hoisting the antenna up and down to adjust the matching so I strung a rope from the tower at 50 feet high and going out at 45
Author: Dan Maguire via TowerTalk <towertalk@contesting.com>
Date: Mon, 28 Sep 2015 19:37:12 -0700
Perhaps not applicable to Doug's monster, but for AutoEZ users wishing to experiment with LPDA models see the third bullet here: http://ac6la.com/aecollection4.html Two general-purpose models are ava