Great construction notes, Dave! However, I don't see the advantage of the longer boom and fourth element required with your design. With the 3 element design I described, free space gain (as modeled with cocoaNEC) is virtually the same as your four element design, while boom length is only about 8 feet vs. your 12 feet, and your best SWR is 1.26:1, compared with 1.02:1 for the three element antenna. The only appreciable benefit I see to the longer boom is a better f/b ratio (about 27 dB vs. about 17 for the smaller antenna).
Lew K6LMP On Mar 18, 2010, at 10:55 AM, Dave, G4AON wrote: [snip] > -------------------- > Or a four element, see my web pages for the dimensions of a portable 4 > element quad http://www.astromag.co.uk/quad/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
