the question you have to ask yourself about the delrin rod is, "how pissed will i be if i go to all this trouble to install the delrin rod and it doesnt make any difference at all?"
because it might or might not make a difference in your situation.
to be honest, this whole "isolate the antenna from the support structure" thing is debatable. i just find the arguments for doing it to make sense to me.
cb'ers have been mounting antennas to metal masts for many years, and doing just fine.
so, the best answer i can give you is, it might be worth a shot. LOL
i would say try it without it, and if its bugging you looking at that piece of unused delrin; clamp it up there on a day you are bored and looking for a project. also, i think it would be just fine to clamp it up there instead of turning the rod down. you know how we do it, we start with perfection and then compromise. LOL
as for the top one antenna, it has been debated for years by people much smarter than me as to what type of antenna it actually is.
i have read so much of those debates i dont know what to think anymore. LOL
i just know they work very well and are perfect for my particular situation.
if you want to use it on 10 meters you will have to do some modifications to it, as it is not tunable and is pretuned for 11 meters.
not too difficult though, it involves sleeving the vertical elements on the sides of the mast so you can vary their length.
keep your eyes out for an old style top one or astroplane on ebay and craigslist, and if you see one you can afford; buy it!!!
they are hard to come by so you know you could always sell it later.
because of their design, they also make great shortwave listening antennas.
an added bonus for sure!
hope all your efforts pay off.
have you found out if the transformer behind your house is making noise yet?
oh, i saw your new pics and i think you live near a big lake right?
could your noises be from homing beacons or some sort of beacon on a buoy that keeps boats from hitting it?
must be lots of things near a big lake that could cause noise.
just something to consider.
later,
LC
