Yes all sorts of problems disappear, but you won't save any money. On the contrary, you will spend a lot more money on amplifiers. A lot more than you will save on coax, etc. I thought a lot about sc
In arrays, you don't want equal power to each antenna. You want equal current, or 1:2:1 current, or whatever. Typically the rear element in an array has an impedance near zero and often negative. You
Some people just like to have the state of the art. Solar panels come to mind. My experience has been that a lot of "innovative" technology comes with a long list of "features", but the one that is
I know you asked about the electrical issue, but at my QTH this setup is guaranteed to fall over as soon as the ground gets wet and a good wind storm happens. At least with the 4x4 sunk 4 feet into t
3) Use a rebar cutting Don't get the Harbor Freight rebar bender/cutter. It is a total piece of junk using HF's famous casting metal that breaks the first time you use it; plus the tool appeared to
The 104 ft boom seems rather short for 4 elements. This would be like 26 ft on 20 meters. I have heard of 3 element 20 meter beams on 26 ft booms. Also, if you were going to insist on 4 physical elem
That's news to me. I always thought wide spaced Yagi's have greater bandwidth. Rick N6RK _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers",
A city might try to call your tower trailer a "recreational vehicle" (RV) or a "trailer" (which it is). In many places, these are not allowed at all, or must be parked only on pavement (and you can't
I have an MA550 with 2 element Steppir 6 inches above the top of the tower. According to the UBC calcs that came with the tower, this is OK up to winds of 50 or 60 MPH. You should plan to crank it do
AFAIK, there is no "manual". You can purchase UBC calcs for $25. Rick N6RK _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weath
I think someone posted on TT that UST said it could hold an extra 500 lbs. On my TRX100/HDX5106 setup, I raised it up an inch and then sat down on the end of the tower (almost 200 lbs). That didn't e
A couple of comments on this topic: 1.The raising fixture is used in two modes: A. Raise tower from horizontal to a modest angle (perhaps 10 or 20 degrees), without antennas installed. B. Then, insta
W6BH has/had a bunch of UST crank ups with stacked Yagis. He may still have photos up on his web site (w6bh.com). I bought his HDX5106 (106 ft) which had a 6 element 20 meter monobander at the top of
You can buy "bird control spikes" that are plastic strips with metal spikes sticking out of them. These can be glued to the tops of the elements and boom and will prevent birds from landing on them.
In my area, 80% of the houses sell for more than the asking price, so that might not be saying much. Of course, YMMV. Rick N6RK _______________________________________________ See: http://www.mscomp
It seems to me that the strength of the concrete limits the safe load you can put on anchor bolts to a low enough value that ordinary steel is good enough for the bolts. Rick N6RK __________________
A lot of these easements are a scam to buy the land on the cheap. The seller thinks he is going to be able to continue to farm or whatever, but the easement holder keeps taking him to court for viola
You have room for a 300 ft beverage. At my QTH, the maximum effective length of a beverage is only 400 ft (I have room for 1500 ft). You should be able to put up useful beverages in the directions o
Well, I have contributed articles to the ARRL to publish and have no plans to ever do that again. When a magazine publishes weak articles like this one, an author has to consider whether he wants to
Of course, F. W. Grover figured this out a century ago. Grover, "Formulas and tables for the calculation of mutual and self inductance", NBS Paper 169, 1912. (NBS is now NIST) Grover, "Tables for the