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Of course Mr. Clark, as usual, is "right on the money" in saying that 1db is
nothing. To get a 1 unit s-meter difference on the average receiver, it actually takes 6 decibels more signal, or 4 times the power, from the transmitter, to produce that signal increase. Double the transmitter power (3 db) , and you get a half an s-unit increase. In many cases, it is more advantageous to raise the antenna 10 feet or more, than it is to increase transmitter power, and it will often result in much more signal in the receiver, since it gets the transmitter antenna "up in the clear", where losses to the ground and surrounding obstructions drop off.. "Richard Clark" wrote in message ... On Tue, 11 Jan 2005 03:30:07 GMT, ml wrote: what would happen if i build say i'd have to stay physically small , so say a 1/4wave verticle on 10m and then made that antenna supercondutive? Hi OM, As far as performance? Absolutely no difference to it even if it were elevated 1000°F above that to compare. - Well maybe someone with enough sophisticated equipment might notice a dB difference - then they would whack the side of the gear to clear that up - nope, no difference.... You need to come to terms with just how imperceptible 1 dB is (zilch, in technical terms), and how much power it takes (about 12%, just more $ to burn) to make that imperceptible difference. The dollar has lost 30% of its value in the world market in the last few years - have you noticed? This may not be one way to appreciate 1dB, but it does reveal how relative changes go unfelt. 73's Richard Clark, KB7QHC |
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