Question
What is a symptom of RF feedback in a transmitter or transceiver?
Answer Options
- A) Excessive SWR at the antenna connection
- B) The transmitter will not stay on the desired frequency
- C) Reports of garbled, distorted, or unintelligible voice transmissions
- D) Frequent blowing of power supply fuses
Correct Answer: C
Explanation
When radio frequency (RF) energy flows back into the shack and couples onto cables (T7B04), this is called RF feedback. This can happen when the transmitter’s own RF output gets into its sensitive audio circuits, causing them to oscillate or become unstable.
The most common and noticeable symptom of this interference is a report from the other station of garbled, distorted, or unintelligible voice transmissions. The microphone or speech processor is being affected by the unintended RF, mixing it with the audio and creating the distortion.
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