----- Original Message ----- From: "Bruce" <k...@myfairpoint.net> To: <topband@contesting.com> Sent: Monday, July 23, 2012 3:56 PM Subject: Topband: Beverage antennas
> > > > Re Tom: > An impedance error of 20 ohms on a 100 ohm line is as meaningful as an 80 > ohm error on 400 ohm line > > Thanks Tom for clearing that up. I tried early Saturday morning, while > very sleepy, to get this info out. A 680 ohm line Beverage with fence > wire, the error ratio is even higher. > (Wide spacing is more RF forgiving, in terms of inches, than close spaced > lines). But we do need to be accurate. ** Wide spacing is also more prone to unbalance wheras close spacing and twisting promotes good balance. > A few years ago I had customer reports, stating they had run their two > wire, fence wire Beverages, fastened vertical with good results. At that > time I switched a 300 foot horizontal run to vertical, and could not see > any difference. Granted this was not an instant change A to B test, but > it sure is an easier installation. I haven't seen anyone frequently > transpose their two fence wire Beverages in my area, but may be a good > idea. > > 73 > Bruce ** That barely qualifies as a subjective test and 300' for Topband isnt that directive/effective to start with.Try it at 1 wavelength or more in a controlled test. Carl KM1H > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1424 / Virus Database: 2437/5149 - Release Date: 07/23/12 > _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK