"Wond" wrote in message ...

On Mon, 02 Jan 2012 08:47:29 -0800, Wayne wrote:

"Wond" wrote in message ...

On Mon, 02 Jan 2012 01:39:48 -0800, Wayne wrote:


Have you ever compared the field strengths above and below the steel
cover?
-
No I haven't. What would be the practical tests? Example, measuring FS
at x feet from the antenna at y height above the cover, vs below the
cover at what point?

I was thinking, it would be a rough indication what proportion of
power is radiated from the feedline.
-
Good point, and I'm not sure that the feedline is currently in optimal
configuration.

The feedline lies on the metal roof to the edge, where there is a small 8
turn loop. Then it goes another 6-8 feet to the tuner.