I'll write more when I have a chance. Joel Hallas, W1ZR, put on a one hour forum on multi-band wire antennas.This took place at our Ham-Con flea market in South Burlington, Vermont on February 27th, 2016.
If you price out a 73CNC 100' spreader kit, it's $29.99 plus $6.85 shipping for a total of about $37.Purchase 200' #14 THHN by the foot for about $.25/ft will be $50, plus tax, depending upon your state.The total is about $87 to $90. Then you have the assembly time and the fun of spraying [...]
I get asked this question all the time, especially at ham fests that I attend. Last night I presented a talk at one of our local club meetings about ladder line and open wire doublets.Guess what? Many of the newly licensed General’s had G5RV’s and one had a Cobra Ultralight. A couple of hams bought a ready-made, [...]
The following is excerpted from an old article about Parallel Transmission Lines, by L. B. Cebik."Parallel feeders go back to the beginnings of radio. By 1930, the "two-wire un-tuned feeder system" was a standard ARRL Handbook feature. The Jones Radio Handbook of 1937 provides a table of line losses showing the advantages of open-wire feeders (a 440-Ohm line in [...]
I have been part of a few, heated discussions on various forums regarding the modeling of an open wire fed, True Ladder Line doublet. After bantering back and forth for weeks on the subject, I decided I had to quit beating a dead horse and move on. Yes, there are people that are quite analytical and NEED to go [...]
Several months ago I was approached by WX4TV and asked if I would be willing to create an antenna "kit" so his children could assemble it themselves and learn something in the process. They built it, erected it and tested it all on the same day the box arrived! This is his comment to me [...]
Check out these two videos that show how I have my balanced feedline connected to a balun on the side of my house as well as my counterweight & pulley system to suspend my 10-80m doublet between two, tall trees.
My good friend Mike sent me this information when I asked him about open wire fed dipoles. He knows a thing or two about antennas!In my opinion, there are 2 reasons to use ladder line over coax.Loss and Tunability. 1. Loss:There are three kinds of loss in RF transmission lines. Resistive losses from wire resistance, Reflective losses from mismatched [...]
Until my store host, BIG COMMERCE, figures out the shipping problem, I have to quote International Rates, one at a time.Contact me with the particular antenna or feedline that you would like and I'll respond promptly.USPS International Flat Rate Priority goes just about anywhere today.Thanks!73, Brian Duerr
Here's a couple of photos showing how I installed the 4:1 current balun on the side of my house. Since we need a coax entry anyway, it's a simple, ten minute step to include the required balun. You can see that I secure the balun to the outside of the house and use two screws [...]