I am planning to install a large loop antenna for 160/80/40 meters on my
155? Rohn 45G tower. I have been reading all the articles and information
that I have seen. I plan on using ½ inch vinyl coated hardline rather than
wire. I have read all I could find on electrostatically shielded loops. I
seem to think that the hardline would work with its outer aluminum conductor
being the shield and the inter-conductor copper wire as the loop. The
shield would be open at the top of the tower. The loop would be close to a
diamond shape in a vertical plane perpendicular to the earth. I would
assume that the velocity factor of the hardline .81 would change the formula
from 1005/f to 814/f. The hardline from the loop will intersect the tower
at approximately 10 to 15 feet and would go straight down through a PVC tube
into the basement of my Orchard Storage Building. At that point the coax
shields would be bonded together to a bus bar that connects to the tower?s
grounding system and the inter conductors would connect to a Ten Tec 253
antenna tuner.
I would like to hear from anyone that has had any experience with the
Electrostatically Shielded Loop Antenna. What do you think? Fred Mott,
AB8AH
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