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spectrum analysis
eirp calculator
Calculate Effective Isotropic Radiated Power for RF systems and wireless transmitters
calculation mode
choose what you want to calculate
transmitter power
typical: wifi router (20 dbm), mobile phone (23 dbm), base station (40-46 dbm)
antenna gain
cable loss
connector loss
typical: 0.1-0.5 db per connector
power density calculation (optional)
calculate power density at a specific distance
more antenna presets
Regulatory Limits Reference
Common EIRP limits for various regions and frequency bands
| Region | Frequency Band | Max EIRP (dBm) | Max EIRP (Watts) | Notes |
|---|---|---|---|---|
| FCC (USA) | 2.4 GHz ISM | 36 dBm | 4.000000 W | Point-to-multipoint, EIRP limit |
| FCC (USA) | 5 GHz U-NII-1 | 30 dBm | 1.000000 W | Indoor use, EIRP limit |
| ETSI (Europe) | 2.4 GHz ISM | 20 dBm | 100.000000 mW | EIRP limit for indoor |
| ETSI (Europe) | 5 GHz | 30 dBm | 1.000000 W | Indoor, TPC+DFS required |
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