Yes very nice article and design by Don. Flags/loops do not exhibit gain but rather directivity. The larger the loop the greater the capture area and the less of a need for a preamp. I routinely use my full size flag without any preamp external to the rig.
A correctly designed and built full size flag will exhibit front/back of 25-30 db. If smaller loops (and I've tried many) have "essentially the same RDF as other larger flag or pennant antennas" I could have saved myself a lot of work by never having put up a full size flag. Size matters. For the purpose of direction finding of relatively close noise sources, Don's implementation looks excellent. 73 - Steve WB6RSE > On Feb 23, 2021, at 10:25 AM, John Kaufmann via Topband > <[email protected]> wrote: > > This antenna could also be used as directional receiving antenna on its own. > Although it is not hugely directive, it can be rotated easily to peak or > null signals or noise, and it is better than a conventional unterminated > loop. It has essentially the same RDF as other larger flag or pennant > antennas but is obviously far more compact. > > > > This is a nice contribution by WD8DSB. Now I have to go off with the > mini-flag and chase some local noise sources that have been plaguing me this > winter on the low bands. _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
