How to Add an Inline Coax Amplifier

Written by nick davis
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How to Add an Inline Coax Amplifier
An inline coax amplifier boosts a poor television signal. (tv antennas image by JoLin from Fotolia.com)

No matter what type of television and antenna you have, a poor television signal takes the fun out of watching a program. Snowy channels and static are signs of a poor signal, but there are ways to clear up and "boost" weak signal. One way is by installing an inline coax amplifier that adds an electrical current to the television signal and makes it stronger. The amplifier works hand-in-hand with your TV's antenna and also boosts signals being transmitted through long cable runs. Once connected, the coax amplifier operates continuously.

Skill level:
Moderately Easy

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Things you need

  • 2 coaxial cables
  • Inline coax amplifier with or without a power injector
  • 300 ohm matching transformer (optional)

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Instructions

  1. 1

    Turn off and unplug the television and any devices connected to the television (cable converter box, satellite receiver or digital converter box).

  2. 2

    Turn the television and attached devices around so the back of the devices are facing you.

  3. 3

    Unplug the antenna or coaxial cable from the "Antenna" or "Cable In" port on the back of the television, cable converter box, satellite receiver or digital converter box.

  4. 4

    Plug one end of a piece of coaxial cable into the "Antenna" or "Cable In" port on the back of the television, cable converter box, satellite receiver or digital converter box.

  5. 5

    Plug the other end of the coaxial cable into one of the coaxial ports on the end of the power injector. The power injector has an AC adaptor attached to it.

    If your inline coax amplifier is a single unit that draws power from the cable or satellite coaxial cable, skip to step 7.

  6. 6

    Plug one end of a piece of coaxial cable into the other coaxial port on the end of the power injector.

  7. 7

    Plug the other end of the coaxial cable into one end of the inline coax amplifier.

  8. 8

    Plug the coaxial end of your television antenna or coaxial cable coming from the wall outlet into the other end of the inline coax amplifier.

  9. 9

    Plug in the power injector's AC adaptor. If your inline coax amplifier is a single unit that draws power from the cable or satellite coaxial cable, skip this step.

  10. 10

    Plug in and turn on the television and cable converter box, satellite receiver or digital converter box.

  11. 11

    Test the connection by changing the channels on the television or cable converter box, satellite receiver/digital converter box. You should see a boost in the television signal. Check the connections and your television antenna if you don't notice a change in the signal.

Tips and warnings

  • If connecting the inline coax amplifier to an older television, you will need a 300 ohm matching transformer if your television doesn't have a coaxial port.
  • If using a digital converter box, perform a channel "Scan" so the converter box can reprogram channels and receive any additional channels in your area.
  • If your inline coax amplifier includes a power injector, do not install the inline coax amplifier before the power injector. The amplifier receives its power from the injector.

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