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link budget rf range estimator
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Link Budget & RF Range Estimator (Tx/Rx)
Advanced RF link calculator for estimating maximum transmission range (Free Space Path Loss) including link budget analysis. Parameters cover antenna gain, receiver sensitivity, fade margin, and path loss exponents (n-factor). The module automatically converts logarithmic units (dBm) to linear (Watts, Volts).
RF Link Parameters (Link Budget)
100.00 mW
Typically 10-20 dB reserve for weather, aging, and interference.
Antenna Design (λ)
Full wave (1 λ):12.29 cm
Dipol / Monopol (1/2 λ):6.14 cm
Quarter-wave (1/4 λ):3.07 cm
Tx Voltage Amplitude (Vrms)
2.24 V
RMS voltage on a matched RF port (50 Ω). Helps select decoupling capacitors and filters with appropriate breakdown voltage.
Allowable Path Loss (Budget)
104.3 dB
Maximum signal loss in air at which the receiver can still hear the transmitter (including 10 dB error margin).
Estimated Range
Free Space (LOS, n=2)
1.61 km
Urban Area (Suburban, n=3)
137 m
Indoor (n=4)
40 m