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On Mon, 08 Nov 2004 20:24:56 GMT, sideband wrote:
Dave: I noted increased signal strength with it on, on both transmit and receive.. The star didn't touch the "active" side at all.. it was on the shield side of the equation.. Perhaps the star, being so close to the sheetmetal of the roof (on the magmount), increased the capacitance, thus increasing the capacitive grounding, providing a better RF ground. Who knows. I didn't have the equipment to test for that 10 years ago when I had one I don't now, either.. All I know is, it did more than look cool. But you do understand how it would be difficult to understand how a series of small radials could do a better job at being a counterpoise than the large amount of metal in the car body? A good counterpoise is all about surface area. For a counterpose to be effective at CB frequencies, the radial length has to be at least a 1/8th wave which is about 4.5 feet. The numbers just don't add up. But this isn't the first time I've heard people swear that some "product" they bought improved their performance, and it made no logical sense from an engineering standpoint, so who knows...... Dave "Sandbagger" |
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