Thanks Walter.
I made too much of the radial issue here. All one has to do is just set the radials at 105" and install them in the hub, and they will be symmetrical, just like you describe. Forget the picture. I just didn't see that until now.
If you can, how high was the antenna when checked with the 259a, and do you remember what the reactance was at 27.205? And, did it seem to change on raising? If I can model the matcher, such info could at least give me some numbers to consider for my model's match.
From your numbers, the antenna looks to be narrow banded. Do you know what the <2.0:1 bandwidth is on your 259a? That'll help me too.
I think you'll find that at 10 meters the SP 500 will be longer than 19' overall, from very bottom to very top, when set for 10 meters. There is just not that much difference between 10 and 11 meters.
Here is the same manual from a recently purchased antenna and this length noted...has been changed to 22' feet. I think 19' was just a mistake, or a correct measurement that was identified incorrectly in the picture.
http://i43.photobucket.com/albums/e399/nordland/SP5002.jpg
Eastside posted the following in a thread at post #196, where there was a discussion on this very subject: http://www.worldwidedx.com/cb-antennas/108500-bbt-delivered-hy-gain-penetrator-500-today-20.html
