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First determine how the current coax cable wiring is configured.
You will likely find a cable box connected to the outside of your home. Inside of this box should be either a ground block or a signal splitter. If you find a ground block you simply unscrew the cable TV feed and replace it with the antenna feed. Next determine if there is a signal splitter down line maybe in the basement etc.
If there is a signal splitter in use within the system the antenna signal will likely require signal amplification for best results. The amplifier will counteract the effects of dividing the signal. The amplifier must be located on the antenna side of the signal splitter.
Choosing the best TV antenna for your location.
Choosing the antenna is where it all starts. The antenna must receive a sufficient signal 24/7. No amount of signal amplification can compensate for an antenna that's not receiving adequate signal. Those who choose the wrong antenna will either buy a second antenna or go back to cable TV. Some people try 3 or 4 antennas before they contact us. If you're new to this and know little about free over the air TV reception be aware of this. There are plenty of Internet antenna dealers waiting to take your money and in return send you junk.
In strong signal areas a signal amplifier may not be needed. In strong signal areas if the antenna will supply a single TV (no signal splitter in line) and the antenna is adequate a signal amplifier will not needed. In weaker signal areas or if the antenna will supply multiple TVs a signal will likely be needed.
There are two types of signal amplifiers. Both types amplify the signal the difference is where they are installed within the system.
Preamplifier two part unit with one part located near the antenna output called the preamplifier and the other part is located indoors and is called a power supply/injector. The power supply requires an electrical outlet and utilizes the coax cable to send low voltage electricity to the preamplifier located near the antenna. Preamplifiers are recommended for moderated and weak signal area and are not recommend for strong signal areas.
Distribution amplifier is a single unit that is usually mounted indoors. Distribution amplifiers are used in strong signal areas when the signal will will be divided by a signal splitter and sent to multiple TV's. The distribution amplifier is installed on the antenna side of the signal splitter. The antenna down lead feeds into the distribution amplifier input and the signal is amplified and is fed from the amplifier output to the signal splitter. The signal splitter divides the signal and the signal is sent via the coax cable to all connected locations in your home.
Can I use my existing cable to tie in an outdoor antenna while still using the cable for internet?
No, the two signals do not mix well. You likely have a wireless internet modem. Determine the cable that leads to the modem and connect it to the internet feed. The remaining cables can now be used for over the air TV signal.
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