Hi Pete, You can use any impedance feedline if its *electrical* length is any multiple of a half wavelength. When you do this, the feedline will exactly reflect the feedpoint impedance of the antenn
Hi Tim; I gather from your comments that you are going to guy your tower with Phillystran. I was planning an identical arrangement for my 110' Rohn 25. My solution was to forget the equalizer plates,
I purchased NECWIN BASIC from Nittany Scientific (for around $78) a few months ago and have been very pleased overall with it. It is particularly good at modeling wire antennas that have elements cl
Greetings! I am getting ready to purchase thimbles for my tower and I want to be sure to get the right size. I am using 1/4" EHS guy cable, preformed grips, and 1/2" turnbuckles with forged eyes. The
Greetings, Can anyone relate any experience with Antenna Mart and their products? I am looking particularly at their medium-duty, 2-element, 5-band quad, the AMQ-2-5-8'-MW. I sent them an email once
Greetings from Gloucester, VA. I have a general question about the effect of guy wires interacting with beam antennas mounted at the top of the tower, above all the guys. As far as the interaction go
Hello All, After the recent discussion about FAQ's for this reflector, I decided to try posting the summary document I have been making for guyed towers and related topics, culled mostly from reading
Hello Bob! I have been researching the tower climbing gear issue and the following should be helpful. I will only post this once, since it is long, but of general interest to all. In the future see
Greetings Towertalkers; I have found another excellent on-line source for climbing products: Rock 'n' Rescue http://www.rocknrescue.com/default.htm They have a particularly complete selection of prod
Greetings; When erecting Rohn guyed towers, what is the generally accepted maximum number of freestanding sections you climb before attaching a temporary or permanent guy? I have seen people climb on
I recently put up a small beam for a friend. I used a 4' long piece of 2" PVC pipe as a trailing tiller, and had my friend tend a tag line attached to the free end of the tiller. I drilled a hole thr
I don't think anyone has yet offered the following, simpler solution to your quest: Try making yourself a fan dipole. Connect two dipoles to the same feedline, cut one for the higher, and one for the
Here's an online source for just about anything you need in the way of hardware. They have their entire catalog on the web, in Adobe Acrobat *.pdf files. If you have already downloaded the free PDF r
Hello All, I have had very good success building end-fed, 1/2-wave verticals (zepps) from wire and ladderline. They are, essentially, j-pole antennas. The radiator is cut for 1/2 wave from a piece of
Greetings, I recently purchased the NEC-WIN Basic modeling software package from Nittany Scientific. http://www.nittany-scientific.com/ I chose this because it used NEC-2 codes that are supposed to b
Hello again, For all those who wrote asking about the vertical wire zepps, here are the dimensions for two that I have built and been very happy with. Please give them a try and post your results! HF
Mike, You didn't mention reinforcing bar. Don't forget to make a re-bar cage. A simple concrete vibrator can be made form a 4" disc of plywood screwed on to the end of a stick, such that the plane of
I can contribute a suggestion. Bill and Dave are right about a multiband doublet. They can and do work well. Make a doublet and feed it in the center with ladder line. Transition the ladder line to
Greetings from Gloucester, Virginia After perusing the load of messages in the archives about tower grounding methods and materials, I used the following scheme to build a low-impedance grounding sys
Greetings from Virginia's Middle Peninsula, At the risk of boring some, I will make an attempt to describe and quantify 'stretching' for those who are interested. Forgive me if the majority have no i