// multi-utility computation suite · offline · instant · precise
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eng.antenna-gain Calculator
Calculates antenna gain, EIRP, and free-space path loss from transmit power, antenna gain, and frequency. EIRP (Effective Isotropic Radiated Power) combines transmitter power and antenna gain — it's the primary regulatory limit in radio frequency spectrum management.
Inputs
Pt
Rate of energy transfer (W). P = V×I (electrical). P = F×v (mechanical). 1 horsepower ≈ 746 W.
Gt
Reference formula or conversion factor shown for context.
Gr
Reference formula or conversion factor shown for context.
F Mhz
Cycles per second (Hz). Audible sound: 20 Hz – 20 kHz. Make sure units match what the formula expects.
D Km
Separation between two points or total path length. Check that units are consistent throughout the calculation.
Results
EIRP
Reference formula or conversion factor shown for context.
FSPL
Reference formula or conversion factor shown for context.
received power
Reference formula or conversion factor shown for context.