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Pregunta 279

What should be the first step to resolve non-fiber optic cable TV interference caused by your amateur radio transmission?

  1. Add a low-pass filter to the TV antenna input
  2. Add a high-pass filter to the TV antenna input
  3. Add a preamplifier to the TV antenna input
  4. Be sure all TV feed line coaxial connectors are installed properlyRespuesta correcta

Explicación

Cable television is a shielded closed system, so an outside signal can only get in where the shield is broken, and loose or improperly installed connectors are the usual leak. Checking the connectors first addresses the actual entry path, whereas adding filters treats a symptom of an over-the-air problem the cable system does not have.

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Pregunta 279: What should be the first step to resolve non-fiber optic… · FCC Technician Class (Element 2) · Questena