Question
What does an S meter measure?
Answer Options
- A) Carrier suppression
- B) Impedance
- C) Received signal strength
- D) Transmitter power output
Correct Answer: C
Explanation
The ‘S’ in the RST (Readability, Signal Strength, Tone) reporting system stands for Signal Strength. Therefore, the S meter (Signal Strength Meter) on a transceiver is designed to measure the received signal strength of an incoming radio wave.
While the readings are somewhat relative and often not perfectly calibrated between different radios, the S meter provides the receiving operator with a standardized, numerical indication of how strong the distant station’s signal is arriving at their antenna, typically measured in units from S1 (weakest) to S9 (strongest) and decibels (dB) above S9.
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