Technician exam question T7B02
Subelement T7, PRACTICAL CIRCUITS· Group T7B
What would cause a broadcast AM or FM radio to receive an amateur radio transmission unintentionally?
- A.The receiver is unable to reject strong signals outside the AM or FM band (correct answer)
- B.The microphone gain of the transmitter is turned up too high
- C.The audio amplifier of the transmitter is overloaded
- D.The deviation of an FM transmitter is set too low
WhyA broadcast AM or FM radio can unintentionally receive an amateur radio transmission when the receiver is unable to reject strong signals outside the AM or FM band. A broadcast AM or FM receiver picking up an amateur transmission unintentionally is usually a sign of receiver overload, its front end can't reject a strong nearby signal outside its intended band, letting that signal leak through, answer A. Microphone gain (B), audio amplifier overload (C), and low FM deviation (D) are all properties of the amateur transmitter, but the underlying problem is on the receiving end, not caused by any transmitter setting alone.
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.
Related questions
- T7B01What can you do if you are told your FM handheld or mobile transceiver is over-deviating?
- T7B03Which of the following can cause radio frequency interference?
- T7B04Which of the following might be the cause of low RF power output from a solid-state transceiver?
- T7B05Which of the following might reduce interference by an amateur station to a non-amateur over-the-air radio receiver?
- T7B06Which of the following actions should you take if a neighbor tells you that your station’s transmissions are interfering with their radio or TV reception?