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Terrestrial Broadcasting
Terrestrial Television, Digital and Analogue
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<blockquote data-quote="Terryl" data-source="post: 1084547" data-attributes="member: 369937"><p>I was wondering about the overall wind loading, if the antenna(s) is/are pointing 45 degrees diagonal to the wind, how much wind would it take to make the break on the antenna rotor to let loose to move them off the original heading?</p><p></p><p>My ham antenna rotor has a 1 square meter (M<span style="font-size: 9px">2</span>) wind load, this means that the total antenna wind-loading can be up to 1 M<span style="font-size: 9px">2</span> for a 60 knot wind, this is where the break on the rotor would let go.</p><p></p><p>For most 450 MHz 12 element antennas the wind loading would be around .06 M<span style="font-size: 9px">2,, </span><span style="font-size: 15px">so you should be well within any loading on that rotor.</span><span style="font-size: 9px"></span></p><p><span style="font-size: 9px"></span></p><p> <span style="font-size: 9px"></span><span style="font-size: 15px">I found this spec for your new antenna, <em>Windload at 120Km/h (720N/m2) Kg (N)</em> - 3.0(29.43) This force is measured in Newtons, my old brain could not remember the conversion formula.</span></p></blockquote><p></p>
[QUOTE="Terryl, post: 1084547, member: 369937"] I was wondering about the overall wind loading, if the antenna(s) is/are pointing 45 degrees diagonal to the wind, how much wind would it take to make the break on the antenna rotor to let loose to move them off the original heading? My ham antenna rotor has a 1 square meter (M[SIZE=1]2[/SIZE]) wind load, this means that the total antenna wind-loading can be up to 1 M[SIZE=1]2[/SIZE] for a 60 knot wind, this is where the break on the rotor would let go. For most 450 MHz 12 element antennas the wind loading would be around .06 M[SIZE=1]2,, [/SIZE][SIZE=4]so you should be well within any loading on that rotor.[/SIZE][SIZE=1] [/SIZE][SIZE=4]I found this spec for your new antenna, [I]Windload at 120Km/h (720N/m2) Kg (N)[/I] - 3.0(29.43) This force is measured in Newtons, my old brain could not remember the conversion formula.[/SIZE] [/QUOTE]
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