Ham Radio Tower Installation
Ham Radio Tower project. Includes planning, construction and installation of a 70 ft self-supporting ham radio tower. Amateur radio towers and accessories, aluminum tubing, coax & cable, wifi towers and more. My ham radio antenna system and ham radio tower including KT34A, Clark Scam 12 and 80m / top band magnetic loop. 38 rows - eHam.net is a Web site dedicated to ham radio (amateur radio).
Erecting An Antenna Tower My Tower Project (Last updated 31 April 2010) Click on photos to see larger images. Some Thumbnails link to rather large pictures.On the order of 350K each so they may be slow to load on dial-up connections. A few of the images need retouching to get rid of dust marks.All in due time. Images Copyright Roger Halstead 2000 In the early Fall of 1999, I was sitting astride the tri-band beam at 90 plus feet, while working on the TV antenna over my head.
I started thinking that I was sitting atop a 30 year old TV tower. One that had never been meant to support near that much weight at that height and it really wasn't all that straight any more. I've taken a number of these things down and the weight of 90 feet of tower plus the antenna(s) has always swaged at least the bottom two, if not three sections together. Swaged tight enough to require a jack to get them apart. The sections actually bell out inside the joint. Not something to build confidence in supporting your butt at 90 feet! This is what gave me the incentive to install the new tower! Swf To Screensaver Scout Keygen Music more.
I decided on a guyed, 100 foot ROHN 45G (found that the top section is 7 feet, so ended up with 97) and figured that I could do the required digging Now, I started this project with the notion that I could probably finish the project in three, or four months. That is, finish it in three, or four months working mostly on my own. It sounds so simple. I was also starting the construction of a 28 X 40 foot work shop, but that was being done by a contractor. Turns out that both projects ended up well behind schedule. Local zoning which is based on safety and requires any tower over 80 feet to be engineered.
So.I requested a building permit, which was issued immediately. At any rate, after spending some time measuring, I settled on installing the tower centered in the lot from north to south. That put it about 30 feet north and 10 feet west of the old tower's location. I used the ROHN handbook for the engineering details, with a little deviation due to having to cross a driveway with the guy lines. The Tower sets in a little over 1 1/2 yards of concrete, while each guy anchor sets in 2 yards of concrete. Each guy anchor is a 16-foot long 5-inch diameter steel pipe which weighs about 300#.
Those pipes set down into the crushed rock base on top of which is poured the two yards of concrete. The top of the concrete form is roughly two feet below the surface.
Pinned in place on top of the concrete and welded to the 5 inch pipe is a brace made of heavy 4 inch I-beam and 5 inch channel, three feet high and with a three foot base. Here, I managed to get a lot of practice welding. In particular my vertical welding improved drastically. Do I look a bit hot, sunburned, and tired? Here is the hole for the base of the tower. 5 1/2 feet deep and 3 feet in diameter It will take about 1 1/2 yards of concrete. The three guy anchors will take a bit over two yards each.