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Best Self Supporting Vertical Multi-band Antenna for Restricted Neighborhoods
On Jul 19, 5:51*pm, Jim Lux wrote:
On 7/19/2011 3:21 PM, Jay Scherberth wrote: Hi, Just getting back on the air after many years of silence and I find myself struggling over the choice of antennas. I need something that I can easily raise and lower (get out of site due to CCR rules) so we're talking about a compromise. I do have room for a couple of radials (max 30 ft) as long as they can buried in the ground 180 degrees apart (not ideal). The antenna will have to be installed within about 4 feet from the side of my house. I was hoping to find a self supporting vertical betwwen 30 and 40 ft hight that could pivit at the base (might need to purchase that separately) so it can be laid down flat on the ground next to the house when not in use. Pivoting is easy. *You can buy a nifty thing from a variety of suppliers, or you can use a couple pieces of 2x4 and a gate hinge. Or, if you're stronger.. you can use the removable tetherball pole approach: a pipe in the ground as a socket, into which you plug the antenna pole. A gate hinge with a removable pin (a standard door hinge works, too) is nice, because then you can actually disconnect the antenna and carry it away if you like. You could probably adapt a "swing away" bike rack too. * I plan on purchasing an auto tuner if necessary. The vertical can have no physical radials on the antenna itself. Autotuner and vertical is a great combination (if the tuner is at the base of the antenna, particularly) And by the way, I live in the hills above Henderson, NV so the quality of the ground isn't good; lots of rock and hard clay with poor drainage. The only problem with "long antenna on high bands" is that the pattern gets kind of wonky. *If you care about this, then something like a 6BTV trapped vertical might be a better solution. *Still with the autotuner (because it means you don't have to worry about the adjusting the antenna or it changing as the soil moisture changes, etc.) Purchase price up to $400.00 OK. Any ideas of what might work in my situation? Galvanized Fence Top Rail is a very cheap pipe available in 20 foot lengths. EMT (thin wall conduit) is another. If it's next to something (the house?).. how tall is the house? *Can you just suspend a wire? That should get you started... The antenna would be about 4 feet away from the house. The house is 20 ft high at the peak of the roof (single story). The roof is concrete tile. I've looked into suspending a wire from a telescopic pole but it seems like it would be a little cumbersome to raise and lower. I've looked at suspending a long wire between front and back yard trees but that is a little more permanent and the HOA could bust me if they saw it. This is why I'm thinking a vertical would be less visible, easier to setup and take down, and has a fairly small wind load. I do favor 20 - 10 meter bands so that might be a prob elm for the design I'm considering. I love the fact that cheap, small diameter pipe can work as well as a commercial product. Thanks for that info! |
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