I agree with Bill, I have installed many large yagis by dropping the guys, one set at a time and pulling the antenns straight up with very little assistance. It's easier if you install the antennas f
I fabricated my plates. For the top I used a triangular plate with a large radius in each corner and I drilled holes to line up with the tower bolt holes. For the lower plate I used a rectangular pla
I'm not sure that linear loading is as efficient as some manufactures claim and some models require a lot of adjusting of the linear loading wires for the antenna to perform properly. I personally pr
There are different configurations of linear loading. Some antennas split the element and the loading wire runs toward the center of the element acting as a truss and some split the element further t
The amount of countries worked has little to do with antenna performance. HOT DAWG !!! I got 288 Countries confirmed on a Dummy Load !!! 73, Dick, W1KSZ/7 -- into ____________________________________
I seem to recall K9AY recommending four short radials, maybe 8 feet long. Perhaps someone with a manual handy can confirm this. If you have a poor ground, you may want to use a receive antenna that i
TIC has changed their designs many times, so make sure if you find a motor that it's compatible. Some of the motors used were made in Germany and I wonder if they are used in any German autos. John K
There are plans for a 3 element 32 foot boom and a 3 element 48 foot boom 40m yagi with full sized elements in the ARRL Antenna Book. I have never use their plans, however I have used their taper sch
Professional tower installers use capstan winches. Where did you find a hand crank type with enough travel? John KK9A All I saw there were capstans, which is not what I'd want to be using "up there",
For some reason this subject comes up all the time on towertalk. I fully agree with K5UJ, if you do not wish to use guy wires, buy a free standing tower, they are designed with a larger base to prope
The RoHS stands for "the restriction of the use of certain hazardous substances in electrical and electronic equipment" It is marked on many things I buy lately, including some cable that I used for
I had a 160 foot Rohn 65G tower with a number of large (up to 60 foot boom) antennas at various heights and the tower did twist. The tower had a pier pin base and was guyed on three levels. I changed
I think this is a bad idea if you are in a corrosive environment as aluminum corrodes very rapidly when in contact with stainless steel. 73, John P40A The key here is to throw away those ratty bolts
While this is a very interesting and useful antenna, it does not defy physics. It only rivals a three element beam with a similar boom length. A 28' boom is pretty short for a 3 element 40m beam. Joh
You can feed an inverted L directly, however if having a lower SWR makes you happier a hair pin coil will work very well. They are simple and inexpensive and also bleed any static from your antenna.
I agree with K9YC, this data makes no sense. Perhaps your analyzer is effected by a nearby broadcast station. What SWR do you get by transmitting into it? John KK9A I don't trust this data -- it does
I was not aware that Texas Towers sells 5/16 EHS. I recently needed a small quantity and I purchased it from http://www.antennasystems.com . Also try http://www.tessco.com . John KK9A Looking for 150
Your post is missing a lot of information. What tower are you using, how tall is it, what is the antenna load and at what heights do you have the guy wires. Many times I have removed a guy wire with
That is a huge hole for a 40 foot guyed Rohn 25G tower. I thought Rohn required it to be 4 feet deep. I personally see nothing wrong with making a box, filling it with concrete and then removing the
W3TX http://www.superbertha.com is the only source that I am aware of. You probably need at least a few extra $10k bills to buy one. John KK9A There are at least 2 sources for them... as for price, i