On 4/11/2012 5:57 PM, [email protected] wrote: > A stations? I've worked with a couple of loops based on
N6RK's designs, and while they have deep nulls and work as expectred they also don't seem to produce any usable RF from DX stations. I can hear stateside signals with > > 73 Steve K0SR In this discussion of loops, we have conflated the issue of loops vs non-loop antennas with the question of the performance of a particular design like mine or Wellbrook, etc. IMHO, a loop is a loop. My NCJ article merely describes an improved feed network for a loop. The loop is a standard "shielded" loop. Any decent loop design, shielded or not, is basically going to do the same thing in terms of receiving DX or not. This discussion began with rumors of rave reviews of the Wellbrook loop. There is simply no way that loop has any magic over other good loop designs, and so any such reviews have no merit IMHO. Some loops may have advantages over others in terms of bandwidth, cost, noise added by any active devices, overload by BCB stations, etc. However, in terms of pulling in DX, again, one loop is generally as good as another. Using the loop design I wrote up in the National Contest Journal, I've heard DX such as CE/K7CA on my loop, but other people have built the same loop design and not gotten such good results. Assuming they properly duplicated the design, it is just one of those Your Results May Vary situations. It would be very unlikely that the Wellbrook or some other loop would produce significantly different results. Rick N6RK _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK
