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| Ten Feet of Ten Element Directional VHF "Big Metal" for clean, top VHF gain combined in a UHF/VHF Mixer with the precision triple beam, high-performance Televes DAT 75. For channels 7 thru 13 in roughly one direction, and channels 14+ in roughly the same direction or a different one, this component antenna array out-performs combo antennas in less space when installed correctly. This "Special Cut" Upper VHF Ten Element 120" Beam Length American Made antenna delivers high gain with low weight and windage. When combined with the DAT 75 by way of a UHF/VHF Mixer into a single downlead, this antenna kit will outperform combination antennas in GAIN and DIRECTIONALITY. The DAT75 should be mounted on the top of the mast. The mast should extend only slightly beyond the clamp on the center beam. The 75 ohm F-connector coaxial cable should extend from the rear of the active dipole element between the Yagi Uda reflectors, and down the outside of the lower reflector and secured with a UV rated cable tie. The RG6 cable should gently loop to the UHF/VHF Mixer with no tight bends. Because of exposure to the sun, whenever possible , simply align cabling to the North on masting and exterior stand-offs for maximum wire life. Apply Stuf to all outdoor connections. Ready to mount on tall masts, towers, tripods, and array bars. Trouble and worry-free for at least 5 years in the harshest conditions. Check back with your customer in 5 years anyway. You will want to evaluate guy wires, wire ties, exterior seals and fittings. VHF gain is not hard to achieve - just hang enough metal up there and you'll be alright. The Special Cut VHF is standard quality construction - nothing fancy - because it doesn't need to be. Heck, that thing could have a fat-assed eagle come and sit on that special cut Upper VHF antenna and even if the darn thing broke off an element or two the reception wouldn't change detectably. Now when it comes to the DAT 75, wellllllll now we're talking about the business end of the deal. The higher the frequency of the Radio Frequency (RF), the more likely that the signal will experience distortion. This distortion can take the form of echoes (multipath, formerly known as ghosts) or reduction in strength of the signal (attenuation, caused by old shake roofs, wet and/or moving trees, wet hills, and obstacles), refraction and defraction, the splaying and comb-filtering of the signal's frequencies like light through a prism. Buildings and the crests of hills and buttes can send signals around corners and obstacles. If placed correctly, an antenna can capture a refracted or defracted signal. The "prismatic distortion" makes it harder to get several stations in one spot, but there have been phenomenal individual results. Some DXers like to "flip the stick", which means to turn an antenna on it's side. The 3012 makes that easy, for attaching an array bar, or a tower side-mount. |
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