SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/ham-cable-tv-connectors-first-step

What is the first step for cable TV (not fiber optic) interference from your ham transmissions?

Make sure all TV coax connectors are installed properly.

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  1. Add a low-pass filter to the TV antenna input
  2. Make sure all TV coax connectors are installed properly ✔
  3. Add a preamplifier to the TV antenna input

Why: Loose or poorly installed connectors let your signal leak into the cable system. Fixing them is simple and often solves the problem.

Huh, didn't know that: Fiber optic cable carries light, so radio signals can't leak into the fiber itself.

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Why did the cable TV pick up the ham? Its connector was loose and it was open to new ideas.
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References

Answer: Make sure all TV coax connectors are installed properly. Loose or poorly installed connectors let your signal leak into the cable system. Fixing them is simple and often solves the problem.

  1. NCVEC 2026-2030 Technician Question Pool (February 19, 2026 errata) ncvec.org/downloads/2026-2030%20Technician%20Pool%20and%20Syllabus%20Public%20Release%20Feb%2019%202026.pdf
    D. Be sure all TV feed line coaxial connectors are installed properly
    Checked 2026-10-09.

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Ham RadioWhich of these is prohibited for amateur radio operators?Ham RadioWhat must U.S. amateurs do in a secondary band segment?Ham RadioTwo stations on the same frequency interfere with each other. What should happen?

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