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Terrestrial Broadcasting
Terrestrial Television, Digital and Analogue
My own construction, 23dB gain, motorized aerial
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<blockquote data-quote="Channel Hopper" data-source="post: 861158" data-attributes="member: 175144"><p>The dipole is simply a receiving device which becomes efficient at the VHF and UHF frequencies when the prongs are of the correct length. A parabolic antenna is nothing more than a focusing device. Combining the two will give you something that can be used in much the same way as a yagi, though buying new will cost more than an off the shelf aerial.</p><p></p><p>If you can source a decent sized dish for pennies then you have the beginnings of a good directional receiving system. The downsides are the cost of changing polarity, susceptibility to winds and with that the potential cost of safe motorising, which is why the military have usually gone down the phased array yagi designs for most frequencies up to L and S band, or 2-4 GHz </p><p></p><p><a href="http://www.ausairpower.net/APA-Rus-Low-Band-Radars.html" target="_blank">http://www.ausairpower.net/APA-Rus-Low-Band-Radars.html</a></p></blockquote><p></p>
[QUOTE="Channel Hopper, post: 861158, member: 175144"] The dipole is simply a receiving device which becomes efficient at the VHF and UHF frequencies when the prongs are of the correct length. A parabolic antenna is nothing more than a focusing device. Combining the two will give you something that can be used in much the same way as a yagi, though buying new will cost more than an off the shelf aerial. If you can source a decent sized dish for pennies then you have the beginnings of a good directional receiving system. The downsides are the cost of changing polarity, susceptibility to winds and with that the potential cost of safe motorising, which is why the military have usually gone down the phased array yagi designs for most frequencies up to L and S band, or 2-4 GHz [url]http://www.ausairpower.net/APA-Rus-Low-Band-Radars.html[/url] [/QUOTE]
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Terrestrial Broadcasting
Terrestrial Television, Digital and Analogue
My own construction, 23dB gain, motorized aerial
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