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How to Connect a Cable Box to a TV with a Coaxial Cable

Use two coaxial connections: wall to the cable box input, then box output to the TV. Match the TV to the box’s RF output channel when applicable.
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Run one coaxial cable from the wall to the cable box’s CABLE IN or RF IN port, then a second coaxial cable from the box’s RF OUT or TO TV port to the TV’s coaxial input. If the box has an output-channel switch, set the TV to the same channel—usually 3 or 4 as marked on the box—and use the cable-box remote to change programs.

What you need and which ports to use

You need the cable service feed from the wall and a separate coaxial cable to connect the box to the TV. The exact port names vary, so follow the labels on your equipment:

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  • Wall to box: wall cable into the box’s CABLE IN, RF IN, or IN port.
  • Box to TV: a second coaxial cable from the box’s RF OUT, TO TV, or OUT port to the TV’s Cable/Antenna or coaxial input.

Philips illustrates this two-cable path in its RF coaxial connection instructions and quick-start guide. For a threaded connector, tighten it finger-tight; do not force it.

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Connect the box to the TV

  1. Turn off the TV and cable box.
  2. Connect the service cable from the wall to the box’s CABLE IN, RF IN, or IN port.
  3. Use a separate coaxial cable to connect the box’s RF OUT, TO TV, or OUT port to the TV’s coaxial input.
  4. Turn on the cable box and TV.

Set the TV to the box’s output

If the cable box has an output-channel switch, set it to the channel shown on that switch—commonly 3 or 4 in the cited Philips instructions—and tune the TV to the same channel. This channel 3/4 method applies only to boxes with that RF output configuration; follow your box’s labels and instructions rather than assuming every setup uses it.

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Some TV menus also require you to select the TV/Antenna source or complete a channel-finding setup. On TCL Roku TVs, the manufacturer describes selecting the Antenna TV tile and following the channel-finding flow, which can include a Channels 3 & 4 selection. The menu path varies by TV model; see TCL’s Roku TV setup instructions.

Change programs with the cable-box remote

Once the TV is tuned to the box’s RF output, use the cable-box remote to change programs. The TV is receiving the box’s output; it is not selecting the cable service’s channels in this arrangement.

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Picture and sound considerations

Philips recommends using a direct AV connection instead of RF when the cable box provides one, saying this produces better picture quality on the TV models covered by its support guidance. That is model-specific manufacturer advice, not a universal comparison for every box and television. Philips’ quick-start guide also notes that its RF-output connection does not supply stereo sound, so audio capabilities can be limited in some configurations.

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  • Weatherproof Design& Durable Construction: Nixsto RG6 coax cable adapted Gold-plated F-connectors with built-in O-ring seals to prevent moisture damage. And the round water-resistant black PVC jacket protects against rain, and humidity. Ideal for indoor or outdoor antennas, basement setups, satellite dish connections, or coastal areas
  • 75 Ohm Copper Core for 4K/HD Signal Integrity: The 75 Ohm copper-plated conductor of the professional RG6 coax cable wire ensures minimal signal loss for 4K/HDTV quality. Meanwhile, gold-plated contacts reduce interference and maintain stable internet/TV signalsand. And, it supports high-speed internet (5Gbps), 4K HDR video, and Dolby Digital audio
  • Flexible Length Options: Multiple sizes--1.5ft 3ft 6ft 10ft 15ft 20ft 30ft 40ft 50ft 60ft 75ft 100ft are available to optimize cable management behind TV stands or wall setups; and the round black PVC design blends discreetly with home theater systems. Besides, tangle-resistant construction for neat routing around furniture and electronics
  • Outstanding Service: There is any problem when in the use of the coax cable, please seek help from us, we will solve your question in time.

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