Any yagi antenna tilters non electronic?

Quote:

Originally Posted by Arcade

Well, at least that is an idea. Thanks.
Though with that solution I would lose my VHF digital channel 8-1.

All I need to do is raise the front end of my antenna about 1 or 2 inches.
I am not trying to aim it at the sky or anything.
I have already done this with my hands and got a 10 point improvement in my reception.
so I know it will work if I can find a cheap permanent solution.

So buy an aluminum, 1" x 1" angle, drill a hole in your boom two or three feet in front of the U-bolt and pin it there, loosen the U bolt a little, and pin the other end of the angle iron to the mast.

Don't be surprised if the benefit is fleeting. In fact, if you were there,holding it while the readings were better, your physical interdiction of the electromagnetic filed might had accounted for the improvement. I once installed a vertically stacked second yagi antenna to eliminate some interference of unknown origin, and at one point, I accidentally connected one of the antennas to the wrong side of the combiner/splitter, so one antenna contributed about 20dB less signal strength that the other one, and while I was doing that, the guy in the building (we were using walkie talkies) said, "That's it", but when I came inside the picture sucked. It turned out that the interference was being phase canceled by the array, but the relative signal strength to optimize the phase cancellation was attained with me standing between the director elements of one of the antennas, since my body was acting as an attenuator pad does.

I think the most common legitimate use is for ham radio reception. I once was called to submit a proposal for a company that wanted me to install some military-grade antenna tilters for yagi-style antennas to track some low eliptical orbit satellites.

If you look at the verticle polar response pattern of any Yagi antenna, you will see that the tilt of a few degrees is of no discernible benefit, but If you are right behind a steep hill, you might pick up a dB or two by matching the downward refraction angle.

If someone behind a hill is using a 4 bay or 8 bay bowtie, he is more likely to benefit from a tilter than is someone with a single dipole antenna, since, with vertically-stacked, multi-bay bowties, the diffracted wavefront will be tilted forward from vertical, and if the mast is not tilted to match it, it will hit the dipoles out of perfect phase and will not be added to one another as efficiently.