Note:
"I use it with a tuner on 40 thru 10 with very good results. I highly
recommend it."

This is no indication of performance. As Cebik says: " Swr does not
indicate what the antenna is doing, only what the feedline is doing".

High losses will show up as low SWR!. This gimmik antenna is not
worth putting up.

Pat W0OPW