You can buy the MARC program from Champion Radio for $10 and it will calculate this for you even suggesting the type of mast material. They will email the program to you. It would be $10 will spent.
Can't help with the modeling question but I have a Mosley tribander mounted about 18 feet above a metal roof. On 20 meters, the roof has "some" effect but not a lot. My lowest SWR is a little bit hig
Lee Suggest you try a different approach. Load the thing at the top center. The top center fed L needs no radials and is one heck of an antenna. Check out Cebik's articles - he has two that explain i
Jerry Feed the L at the top center and forget about radials. See Cebik's article about top fed Ls at http://www.cebik.com/ltv.html Run as much wire as you can and then bend it back -- linear loading.
The problem with the article is: here we go again . . . The author acts like Hams (a bunch of weird geeks with a strange hobby who screw up your TV set and have ugly antennas on their homes and cars)
Here's a great site about knots and how to tie them http://131.230.57.1/knots.htm Radio k4ia "Buck" Fredericksburg, Virginia USA _______________________________________________ See: http://www.mscomp
Here's mine for those who need a place to start: "Even minimal signals (less than 100mw) in the HF bands can travel hundreds or thousands of miles. This raises several issues with BPL. The radio spec
In a message dated 4/27/2004 9:31:31 AM Eastern Daylight Time, wd3q@starpower.net writes: Having conducted 10 million measurements of BPL systems, the Department of Commerce will be able to chart the