开云体育

ctrl + shift + ? for shortcuts
© 2025 Groups.io

Re: loop material question


 

Well I finally got around to putting something together to test some receiving. I ended up getting the improved LZ1AQ from N4CY. For the loop I took a 4” x 10’ strip of 16oz copper approx 22mils or .0216” thick. I hemmed both long sides, also called a blind edge. The hem is .6 inches bent back onto itself and smashed flat in the brake, this helps give it some rigidity. After that I used the 3 pin roller to make a 3.18’ diameter loop. I drilled 2 opposing holes in a 10’ piece of 3” PVC and notched top with a uni bit. I took a 10” section of 3/4” pex tubing and cut 6” off of it. I placed one end in one of the pre drilled holes then bent it around top and put the other end in the opposite hole to form a circle slightly smaller than my copper loop. Attached the amplifier box and bolted on my loop. Not too crazy about the loop to amp connections, the #6 bolt and wingnut doesn’t seem sufficient to me, id like to try something that is in contact with more of the copper surface. My bias tee power supply was noisy so i had to track down a better one.?
I live in a typical suburban neighborhood north of Philadelphia. Lots of noise but I am receiving 160-10meter clearly -110 -120 noise floor.?
still some things to try, may put the loop through the bead roller to stiffen it up some. Have a good day?
thanks.?
John.?

?

Join loopantennas@groups.io to automatically receive all group messages.