Yuri has hit it on the button. I have modified the original beam for direct 50 ohm feed. Anyone with EZNEC may have a copy of the file if you're interested. 73 Ed ___________________________________
-- Dave, you didn't mention the frequency of the antenna you were going to use. IF it is a single band Yagi, there is absolutely no reason you cannot use the hard line all the way to the top ( unless
-- Goodness, I think that reflector went up in smoke at least 5 years ago. 73 Ed _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
-- Well, it's been some time, but the absolute minimum altitude for any aircraft except the military is 500 feet above your location.( exception for air shows ) The military is allowed to go as low a
I've tried this and found that the screwing action also serves to cut the shield wires. Been some time, but I seem to remember at least 1/2 the shield just cut off and left inside the shell. 73 Ed As
Nope, strange as it may be, you may erect any tower to any height directly below the glide slope as long as the surrounding trees are taller. Which makes some sense....If you are about to hit the tre
I doubt Rich's estimates are off very much at all. It happens all the time. But, it is illegal, and if you can get a tail number, then call the FAA, the pilot is in for a citation. It is well defined
Nope, depending on the spacing of the parasitics, it will range from generally 20 to 30 ohms. And optimized, the figure is about 20 ohms. You have to have some pretty wide spacing between the Reflec
-- 1. Attach a good synthetic rope ( Home Depot ) to as high above the plane of the yagi as you can. ( but not over 4 or 5 feet ). BEFORE you tie it off to the mast, insert the line through the CLOSE
I throughly disagree. I can get more gain and twice the F/B with a single 5 element Yagi than any of those shown. I've used YO and think it's garbage. 73 Ed _________________________________________
-- Most simple method is to merely climb the tower for 20' feet or so, tie a line there and then tie off the other end. Then use the line to "hoist" the antenna into the air a few feet. 73 Ed ______
This is something I just don't understand. I have a 72' Heights up and it doesn't "clang" or otherwise do anything. It's old, probably 25 years plus, so perhaps the manufacturer changed something in
This thread seems to be hanging on by a thread. Having heard the comments by my fellows on Amidon, I will no longer do business with them. And plenty of other companies which do cater to hams have be
Jim, this is fairly common on old variables, especially if not in almost constant use. The noise and intermitent is in all liklihood coming from the joints on the capcitor shaft. Try a "pressure cont
Just thought that I would pass along another good method. If you have a lawn edger, then you can rotate the safety housing so that the blade will dig about a 2" slit in the ground. Of course, you hav
Fortunately, most States now bar this type of cable. Good suggestion, but the AL if you can find it is twisted in to a bundle. 73 Ed _______________________________________________ See: http://www.ms
And just what makes you think we give a damn about your opinion?. K4SB _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather S
-- He is also listed as the licensee on Buckmaster, but they append a note that he has "been reported as a silent key" Given his birth date in 1917, that may be true. 73 Ed __________________________
Bill's description is very close to the method I use, except I simply use a 5/8" drill and concrete bits from Home Depot. The largest they sell will allow you to pass a PL259 shell through the hole.
-- Good advice. Just a little addition. If you use an analyzer, use as high a multiple of the frequency you want as possible. For example, the MFJ is good to 170 mHz. For 50.1 or so, you'll get a muc