Question
What can you do if you are told your FM handheld or mobile transceiver is over-deviating?
Answer Options
- A) Talk louder into the microphone
- B) Let the transceiver cool off
- C) Change to a higher power level
- D) Talk farther away from the microphone
Correct Answer: D
Explanation
Over-deviation is a term for excessive modulation in FM transmission, which means your voice is too loud, causing the signal to be transmitted too wide and distorted (T2B05). The other station will report your audio as clipped or garbled.
Since deviation is directly proportional to the audio input level, the simplest and most immediate solution is to talk farther away from the microphone (or speak softer). By increasing the distance between your mouth and the microphone, you reduce the audio level input to the radio, reducing the deviation, and clearing up the distorted audio.
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