What should be the first step to resolve non-fiber optic cable TV interference caused by your amateur radio transmission?
Add a low-pass filter to the TV antenna input
Add a high-pass filter to the TV antenna input
Add a preamplifier to the TV antenna input
Be sure all TV feed line coaxial connectors are installed properly✓Bonne réponse
Explication
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.