Technician exam question T7B09
Subelement T7, PRACTICAL CIRCUITS· Group T7B
What should be the first step to resolve non-fiber optic cable TV interference caused by your amateur radio transmission?
- A.Add a low-pass filter to the TV antenna input
- B.Add a high-pass filter to the TV antenna input
- C.Add a preamplifier to the TV antenna input
- D.Be sure all TV feed line coaxial connectors are installed properly (correct answer)
WhyThe first step to resolve non-fiber optic cable TV interference caused by your amateur radio transmission should be making sure all TV feed line coaxial connectors are installed properly. Coaxial cable connectors that aren't properly installed or tightened can let stray RF leak into a TV's feed line, so checking every connector on the TV feed line is the sensible first step before assuming a filter is needed, answer D. Adding a low-pass filter (A), high-pass filter (B), or preamplifier (C) at the TV jumps to a fix before confirming the interference isn't simply coming in through a loose or poorly shielded connection.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2026-2030 NCVEC Element 2 pool (public domain); the explanation above is original writing, see our methodology.
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