i came across a posting on Facebook where someone had made a 15ft square loop on ground antenna and was having good results... i have a flat space on my roof... and wondered if a similar loop laying flat but at a 10ft elevation would have the same potential as the loop on the ground, or if it needs to be on the ground to function... or if it may actually work better because it's elevated?
thanks for any input,
Richard
N0TZC
A LoG works well since the unit isn’t really a tuned antenna (hence the odd length), being linearly loaded along the conductor length by the lossy ground immediately adjacent to it. Elevating the loop will dramatically change the radiation characteristics but just how will depend largely on the construction of the roof underneath it.
That said, there’s no reason not to give it a try but I think I would start with a loop with dimensions that would ordinarily make it a resonant one on the lowest band you want to try to use it on and see how it goes from there.
This sort of situation is why I like amateur radio so much in that it allows you to experiment and perhaps come up with a workable solution for others in your situation. You’ll learn a bunch of stuff along the way too and becoming an expert in something odd is never a bad thing!
Some years back I was in a situation which enable me to experiment with buried antennas, both loop and straight wires and now I guess I’m the local expert on such things so that’s kind of nice.
In short, give it a go and see what you can come up with!
