On Thu, 2008-08-07 at 17:18, Tom W8JI wrote: > Nearly the worse way to do any comparison is to know what it > is and then compare. > > For example? When I compared a G5RV on 80 meters with a > dipole and told people the G5RV was a G5RV, it lost nearly > all the time in reports. When I said the dipole was the G5RV > and the G5RV was the dipole, the actual dipole almost always > lost and the antenna that was really the G5RV almost always > was "better". When I did the test blind they were randomly > about equal, the same as a field strength reading and a > model of the antenna systems showed. > > 73 Tom
Many years ago when we installed the new 120-foot tower with stacked 20 meter monobanders at W1AW, we wanted to compare the new antenna with the old rhombic antenna that had been used for years for bulletins and code practice. For several weeks, after each transmission session we would send a series of long dashes on each antenna and ask people to send in reception reports comparing the two antennas. But we called the antennas "A" and "B" with a random assignment each session of which was which. By the way, the results were kind of interesting. The rhombic was as good or better than the stacked monobanders for stations on its boresight to the west - more or less centered on San Francisco as I recall. But the Yagis had a wider beam width so they were significantly better in places like Washington state and San Diego. I suspect if we had announced which antenna was "A" and which was "B" we probably would have got different results. Al N1AL _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
