Many factors can effect TV reception. Most difficulties can be overcome with the proper knowledge and equipment. For an example, if a medium sized antenna is recommended for your location and you live in a wooded area surrounded by miles of dense woods you may want to choose a larger TV antenna to compensate for the reduced signal strength created by the trees. The same goes for low or high elevation at the location of the antenna installation. If you live on a hill surrounded by miles of open land a smaller than recommended antenna may be used, and just the opposite for low elevation.
Buildings, hills, trees can all block signal, examine your terrain carefully before you select your TV antenna. One more thing, antennas installed outside work better than those installed inside. TV antennas installed above the highest roof line of your house and your neighbors if possible, work better than those installed below the roof line.
When you're finished with this page you may want to try out the
"TV Antenna Selector" back on the main page.
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#2 Selecting the TV Antenna Amplifier
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A TV antenna amplifier referred to as a preamplifier usually necessary to achieve high quality TV reception. Preamplifier's don’t actually improve the antenna performance even though it appears that way. What they really do is provide amplification of the TV signal at the TV antenna, boosting the signal to a level that is greater than the signal loss that occurs as the signal travels through the down lead cable from the TV antenna to the TV(s).
There are two parts to a preamplifier. The outdoor portion that is installed near the TV antenna is the amplifier. The indoor portion installed along the down lead cable run is called the power supply or power injector. The down lead cable feeds in and out of each unit.
Things to consider before you buy the antenna amplifier. Do not purchase an amplifier larger than really needed. This page selecting a TV antenna amplifier is an excellent source, providing information to help you determine what size amplifier is right for you. If you do purchase an amplifier that has considerably more amplification than required for your TV antenna system, signal overload may occur.
Also consider the noise figure rating for each particular amplifier. Noise is measured in decibels or dB. The lower the noise dB number is the better. Generally anything under 3 dB is acceptable. If the antenna preamplifier manufacturer does not readily offer the dB noise rating for a particular amplifier, it usually means the noise figure is poor for that amplifier, and not acceptable.
To learn more about preamplifier's click on Preamplifier Installation near the top of the main page.
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#3 Selecting A TV Antenna Rotator (Rotor)>
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The TV antenna rotator often referred to as a rotor has one purpose. To turn your TV antenna to obtain optimum reception when the TV transmitters are in different directions from your location. If your area TV broadcast towers are all located in the same direction a rotor will not be necessary.
Rotors consist of two parts. The outdoor motor unit and the indoor control unit. The outdoor motor unit is located below the TV antenna and turns your antenna to the desired direction. The indoor control unit indicates the direction the antenna is pointing and allows the user to control the direction of the TV antenna. Generally a wire must run from the motor unit to the control unit. This wire is called the rotor wire.
When choosing your rotor quality is the most important consideration. Beware there are inferior rotors on the market. Most of these inferior rotors are manufactured by the same company and sold under many different names.
A link to Rotor Installation Tips is available near the top of the main page.
#4 Selecting the proper antenna mount
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One of my favorite mounts and our most popular is the antenna eave mount. The eave mount is installed to the eave facing at the peak of the roof and is a non roof-penetrating mount.
Another popular mount is the tripod. It has three legs and can be installed, straddling the roof peak or on a flat roof. When properly installed the tripod is a sturdy trouble free mount.
The chimney mount uses straps around the chimney to hold two corner antenna - mounting brackets securely to the chimney. This mount should only be used on brick or block chimneys.
Wall brackets may be used to install a standing pole along side of the house, burying the pole several feet into the ground. If the distance from the ground to the bracket is more than fifteen feet I recommend the use of two brackets. Locate the second bracket halfway between the top bracket and the ground.
Antenna tower is rarely used today mainly do to the high cost and difficult installation. If you decide to install a tower, I recommend that you hire a professional to do the job.
#5 Selecting and Installing TV Antenna Coax Down Lead
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When installing coax cable, fasten the wire securely. Failure to do so will result in eventual reception failure. Unfasten wire will rub against objects wearing through the rubber coating of the wire and allowing water to enter the cable. Select only good quality wire, I recommend nothing less than solid copper RG 6 coax cable.
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©2006 TV Antenna Source
"Helping America Watch Free TV"
TV Antennas, amplifiers, rotors and mounts.
Detailed information for the do it yourself TV antenna installer
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