What RSSI range is generally considered good for meaningful data rates?

• A. Around -80 dBm
• B. Around -50 dBm
• C. Around -67 dBm or better
• D. Around -90 dBm

Answer: (C)

RSSI shows how strong the received signal is, with less negative values meaning a stronger signal. For data to flow reliably and at meaningful speeds, the signal must be strong enough to overcome noise and support the chosen modulation. Around -67 dBm or better is a practical threshold many wireless systems use to indicate a solid, usable link in typical environments. It reflects a balance where the signal is strong enough to maintain decent throughput without being unrealistically optimistic.

Weaker levels, like -80 dBm or -90 dBm, tend to struggle to sustain meaningful data rates and can lead to retries and dropped packets. A very strong signal, such as -50 dBm, would certainly work well, but the general guideline most often cited aligns with -67 dBm or better, making it the best fit for the question.