Tools
RSSI Calculator
Estimate received signal level for your PtP link.
Link parameters
Same formula as the original NetPoint site: FSPL = 20·log₁₀(km) + 20·log₁₀(GHz) + 92.45 · RSSI = EIRP + Grx − Lrx − FSPL
Results
- Free-space path loss (FSPL)
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- Link budget
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- Estimated RSSI
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Status: enter values and click Calculate
RSSI interpretation guide
Scale published in the original NetPoint calculator.
−44 to 0 dBm
Danger
You may damage the radio — reduce TX power
−45 to −55 dBm
Excellent
Perfect, stable signal
−56 to −64 dBm
Good
Reliable — still room to improve
−65 to −70 dBm
Low
On the edge — keep aligning
−71 to −80 dBm
Very low
Weak signal — improve urgently
−81 to −100 dBm
Minimum / critical
Barely connected — redesign
Pro tip: a solid link should stay between −45 and −64 dBm.
How to use it
- Enter TX power, antenna gains (site A and B), and jumper/connector losses.
- Set distance in km and frequency in GHz (e.g. 5.8, 6.2, 11).
- Press Calculate to see FSPL, link budget, and estimated RSSI.
- Use Load example (20 dBm · 24 dBi · 10 km · 5.8 GHz) to validate the flow.
Real RSSI also depends on Fresnel, alignment, noise, and interference. To size a new NetPoint link, reach us on WhatsApp or review beamwidth.
