Voice quality on a municipal inspection tablet drops when noise rises even though RSSI still looks acceptable. Which power relationship best explains the problem?
Select an answer to reveal the explanation.
Short Explanation
RSSI can look fine while the room gets noisy — like hearing someone clearly in a quiet library then losing them when a band starts playing. SNR is signal versus that noise. Voice dies when the gap shrinks, not only when the bars disappear.
Full Explanation
Signal-to-noise ratio (SNR) expresses how the desired signal compares to the noise floor. Elevated noise can impair modulation and voice quality even if RSSI or absolute signal remains in a seemingly acceptable range. Antenna gain is not a feature that intentionally raises noise for QoS, and power units remain valid during voice sessions. Technicians should evaluate SNR alongside signal strength for latency-sensitive clients.