hy-gain spt-500 super penetrator

[JAF0]

Thanks for the input JAFO. I went with the 45 degrees down angle for the Cap Hat Radials. Read an article a ham did after doing a good bit of tuning work with the new 500. It was something he suggested doing. I set mine up at 22' 4.5" 'cause I operate above 27.195. SWR's are 'bout 1.25:1 or less the higher I go. Great info, thanks again. 73's

Sorry for the rapid reply...

So I'd guesstimate about 27.500mhz for close to 1.0:1 swr?

The reason I dislike the downward bent top hat rods is because it's inverting the phase of the top 9.5" of the current and tends to cancel about 7" of the top of the radiator current, just below the top hat.
So instead of a full 265" of your 5/8 antenna height you'll end up with only about 249" effective, losing the top 16" which could be adding to the performance in improved receive capture area and overall height, sacrificing that little bit of top current being cancelled.