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Cecil Moore wrote:
Jerry wrote: Finally, I have seen screwdrivers mounted on the ladder in the horizontal facing rearward and high enough to stay away from other vehicles. Then it was braced with another piece of non conductive material in that position OR slanted up towards vertical. This, of course, kept it out from bridges but let it operate well. Use a stiff upper whip. Another idea is to locate the antenna on top of the vehicle and install a very large top hat one foot above the coil. That would limit the height of the antenna system to about four feet above the top of the vehicle. I once tried an experiment of a 6'x14' piece of 1/4" hardware screen mounted four feet above the cab of my pickup used as a top hat for my High Sierra screwdriver. It minimized the amount of coil required and put out one heck of a signal. Field Strength measurements indicate that it would have placed at the top in a 75m mobile shootout. A 6'x14' top hat would actually be easier to implement on an RV than on a pickup. I'm not sure i understand what you mean by a top-hat? Do you thing something like this could be used with the body of the scredriver antenna mounted horizontally on top of the rv and the Top hat mounted close but seperately, making the antenna basically flush with the top of the rv ? If that makes any sense. -- Registered Linux User #346565 |
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