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Hi Gary,
That is some vivid and colorful experience you describe there. I haven't ever heard anything like that gounded copper "face" plate at the entry point to the house. What is the theory there? If it wants to arc it goes to ground? I don't know whether my system is considered right or wrong, but it has worked for 20 years with no problems at all and no TVI. I am glad to hear that, since I do have a few neighbors here. On the wall outside of my shack is a 1/16" thick copper plate that measures about 14" x 18" A #6 braided copper cable, brazed along the left edge, along with 3 bolts through it as well, connects to an 8 foot grounding rod with clamps. It is through holes in this copper plate that all wires lead into the shack. What kind of insulators did you install in that copper plate for the wires to go through? On the inside of the house, a section of drywall was removed from between the studs temporarily, in order to install 9 gas bottle lighting arresters inside the wall. I am not sure what this gas bottle arrester is. Are you talking about a homebrew made from some recycled material of some kind? "I have handled ladderline in a couple of different ways over the years. Initially, I passed my ladder line, one leg through each of the 3/4 PVC tubes and on the inside to my tuner, on the outside to the antenna it was used with, in this case a loop skywire. your use of the pvc tubes is not that different my intended use of those old ceramic tubes, It just happen to have saved a bunch here at the farm and have a bucket full of them. They were used to run the ac wires through wooden chicken house walls, you know they left those lights on so the chickens would lay more eggs....there were an awful lot of these lights running along to 100' long chicken houses. I have spent many years dismantling and remodelling these old buildings. Now we only have a half dozen chickens and that is even too many..hi hi...what were we talking about,,,,oh yes....ladder line.... As an aside, I had a similar set-up at my former house, only without the gas bottle lightning arresters. Then I would use connectors through the copper plate which grounded the braid to the copper plate. I am in K6 here, not much lightning, however, I think I will put a big old knife switch in In places where it is feasible, I prefer ladder line over coax! One of the best ladder lines I ever constructed was using some of my sons Monster Cable that he had used with his stereo speaker system. This heavy cable for some reason made a noticable difference in how my 80 meter loop skywire functioned. Bandwidth was definately greater, and many received station signals were stronger. Logical NO, but they were. Are you saying that you made your ladderline out of monster cable (braided #12 or so) by separating the two stands and keeping the insulation on it and using spacers? Or are you saying you used monster speaker cable "as is" for ladder line (those two strands would be kind of close that way, maybe that gave you a favorable impedance in that situation. I am trying to get the picture. I do have a bunch of that cable on hand as well and never even gave it a thought as applying to ham radio....it fits into my audio and speaker building hobby..... As an aside, I often used miniature plastic I-Beams from the hobby shop instead of wood for my spacers. yes, the search for good spacers.....I am thinking of using those small dia. uv/pvc tubes (4") that are used as ferrules for rain gutter spikes. The company is sending me a bad of 250 without the spikes for a nominal price....samples you know..... I don't why I am so fixed on this ladder line idea...maybe because I want to design one of those old fashioned qsl cards with a cartoon of a chicken house ham shack up on a hill with a cartoon latter line going up to a wire antenna with old fashioned glass strain insulators etc.....dah, di dah, di dah dah dah being pounded out on a log drum.......with sparks flying out to all points in the ionosphere..... 73 Bill k6taj |
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