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Channel Master 3671 Deep Fringe Crossfire Series Antenna |
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CM 3671 antenna features a light weight design optimized to receive HDTV and Digital FM Radio signals. You can receive crystal clear, native, uncompressed HDTV signals up to 100 miles away from the broadcast tower...
Mast Not included
Steel hardware is zinc plated for maximum corrosion resistance.
Boom Length: 173 in.
Width: 110 in.
Height: 35.4 in.
Turning Radius: 100 in.
Estimated range 100 miles VHF, 60 miles UHF
Includes hardware for mounting to a mast; antenna has a 75 ohm coax connection
Flexible polyethylene boot covers protect connections from the weather.
Engineered for extra strength with double boom braces, high-impact ABS girder design and support insulators.
Outstanding UHF reception acheived by precise director spacing and highly efficient corner reflectors.
Shipping Dimensions: 100x7x8
Yagi- Is probably the most recognizable antenna type used in the widest variety of applications. Mostly used for VHF reception, it is elegant, simple and is a flexible platform for design modifications that would exhibit predictable patterns in reception, frequency bandwidth and gain. It can be tuned to a specific Frequency or range of Frequencies. The math of the physical construction is deeply rooted in correlation to the electrical wavelength of the Frequency desired. The size of the elements is a dead giveaway to clue one as to the frequency of use; as the frequency of use is lower, the size is greater (though some Low Frequency variants incorporate loading coils to reduce size). Most TV antennas (99.9%) that we have grown accustomed to seeing these past decades are actually a combination of Corner Reflector and Yagi, with the long nose in front leading directly to the first reflector panels that physically comprise the Corner Reflector for capture of UHF signals, and the long outward elements bringing up the rear of the antenna comprising the Yagi component of the antenna for VHF reception. Now you can understand why when examining gain and range data for antennas, the differences in the same antenna are delineated along VHF/UHF categories. Two antennas in one is what you get; with the characteristics of VHF/UHF reception with same basic antenna design being so diverse. This Antenna incorporates Bowtie shaped components into the Corner Reflectors up front as to increase UHF gain and range.
Availability:
Call to Order
Shipping:
Can ship anywhere
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There is no substitute of height, clear line-of-site and size does matter... The higher the frequency, the higher the loss... Amplifiers do not give you something that you didn't have already...
The first key to any reception is to get above obstructions that exist between you and your target, as radio frequency reception of any kind (satellite, microwave, Radio and TV) are for the most part "Line-of-Sight" dependant. The fact that some receptions occur without line of sight is due to phenomenon not applicable in this discussion. As you increase your target distance, you increase the territory you must account for in maintaining line-of-sight. What tall building and air traffic exist in this corridor, no one can account for. Aircraft are very good at messing up reception for a number of reasons, even when flying way above the path, again removed for clarity in this discussion. Height, is therefore key in optimizing your ability to capture the best line-of-sight possible to your target.
Large ;Directional Antennas are good for HD TV Reception ;up to ;100 Miles with Pre-Amplifier usage…
For ;Long Range Directional ;TV reception, there are typically ;3 major types used; Corner Reflector, Yagi and Bowtie, not in any particular order.
Some of these Antennas are of ;Large Profile and Typically have a Asthetically ;Distictive appearance which can ;be ;of Concern ;when dealing with Home-Owner and Condo Associations. Their ;Extremely Large ;size ;prohibits some of them ;from Attic installation. If You enjoy a rather Spacious Attic, some Considerations would be; to keep wiring and other metal obstructions away from the Frontal view of the Antenna as not to impede reception in that Direction, and that any Amplifier that you might be using to enhance reception and/or distribution to other TV sets in the house be colocated with the Antenna as to reduce loss of signal unnecessarily due to distance between the Antenna and Amplifier, as well as to offset any loss in Antenna Gain from Roofing Materials used in Construction.
Indoors or Out, I ;always try to Mount the Antenna in a Position and Fashion that will lend itself to a maximum Angular view of the Horizon so a sweep with the antenna can be performed through and Past the intended reception Direction(s). This will insure that you are centered on Target (finding the "Sweet-Spot" for them all), and that if there are other Broadcasts available to you that were unknown previously, you can amend/supplement your current Antenna installation to add these New Channels to your Stockpile.
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