> The 43' vertical is recent fad and it makes no sense at all. Virtually > any trapped multiband vertical should easily outperform it.
Steve, I thought the same until I read this: http://vk1od.net/antenna/multibandunloadedvertical/ According to the author, the so-called "magic" of the 43-foot length is that radiation resistance remains quite high across the HF spectrum and thus, system losses are minimized. Compared to a 33-foot vertical, system losses are much lower across the spectrum. But to your point, a trapped multi-band vertical can offer similar performance. Personally, I think the negativity associated with trap loss in multi-band antennas is grossly overblown. Other systematic losses mask what little loss exists in most trapped antenna designs. Anyway, not sure how valid all this data really is, but the data presented is interesting Paul, W9AC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
