Penetrator 500 new

[Steelman55]

Wonder what the proper length for 11 meter use and how to set swr on same

[BOOTY MONSTER]

https://www.dxengineering.com/search...rder=Ascending

" SPT-500 antennas measure 22 ft., 9.5 in. high"
you can adjust the length some for fine tuning or if you have channels added .

[mjd420nova]

When the Penetrator first came out, decades ago, it wasn't a legal antenna as the rules set the limit at 20 feet. Used single or even paired were the best around. Sigma 5/8 followed and it has a 27 foot vertical element. Those designs .with the gamma match elements near the bottom have excellent take-off angles for working skip.

[BOOTY MONSTER]

it became illegal again because it is a aluminum antenna and if it makes contact with power lines it can easily kill . a fiberglass antenna (imax 2000 , antron 99) has the antenna wire running inside the fiberglass insulation allowing a better chance of survival .....well ..... it was illegal for a cb antenna , but legal for hams , because supposedly hams were too smart to electrocute themselves .....

[mjd420nova]

I haven't and never will mount an antenna anywhere near any power lines. Subject to high winds here, I insure that there are no power lines close enough for the antenna to contact, either during install or in the event of failure, will not fall on any lines.