Total posts : 45366
Mark wrote:Well, read, specifically, through the two pdf’s that make up the presentation to the NAB. His introduction pdf, which is long, and the presentation, which is short, tell you a lot. The presentation names the individual who did the testing and describes the test conditions and the results, for AM broadcasting test.
Thanks, but I have read those PDFs already, and they don’t have any field strength measurements, or even calculations of field strength produced by an EH at any elevation above the ground.
The technical numbers shown there appear to be calculated design parameters for components of an EH antenna — not its measured radiation performance.
Its great if you want to experiment with any kind of antenna, and I don’t want to discourage/anyone you from doing that. I’m just trying to supply a little perspective from a practical engineering background for you to consider, if you wish to do so.
As to how an FCC inspector would view a Part 15 AM, EH antenna — that will depend on the inspector. I have read documents from highly placed FCC officials stating that even the length of wire in a conventional loading coil used with a linear radiator (whip) is part of the total 3-meter length of 15.219. Other Part 15 users report no problems with that.
So essentially, you are on your own as far as risk vs reward :).