I have no experience with an inverted L. I was able to find some information by using Google to search QRZ by entering this query: inverted l antenna site:qrz.com I have a more general thread going on here: http://forums.qrz.com/showthread.php?292278-Using-a-QTH-diagram-help-me-evaluate-antenna-feasibility... In that thread, I ask a few questions about the inverted L antenna, which may have been more appropriate for a specific thread about inverted L antennas: 1. If I use a metal mast with an inverted L, won't the metal mast interfere with the vertical section? 2. If one has to put down a bunch of radials under the antenna, why not just use a multiband vertical antenna instead? 3. Will a well-designed inverted L antenna outperform a well-designed multiband vertical antenna? 4. Will a well-designed inverted L antenna outperform a well-designed G5RV antenna?