RF Calculator Pro

4.6
149 reviews
Content rating
Everyone
10K+
Downloads
Content rating
Everyone
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About this app

RF Calculator Pro is a utility application consisting of various calculations, conversions and reference tables.

Radiation:
• Electromagnetic wave (wavelength, frequency, period)
• Propagation delay (distance vs. time)
• Resonance (frequency, inductance, capacitance)
• Radiated power (vs. VSWR)
• Air core inductors (inductance, turns)

RF Link:
• Free space path loss (loss, distance)
• Link budget (RSSI, fade margin)
• Fresnel zone (1st, max, 60%, Er)

RF Base Station:
• Transmission line (Tx, Att, Pout)
• EIRP ERP (effective radiated power)
• Antenna down-tilt – angle (angle, distance)
• Antenna down-tilt – coverage (inner & outer radius)

Radar:
• Power density (W/m²)
• Maximum range (distance)

Losses:
• Attenuators (Pi, Tee)
• VSWR (voltage standing wave ratio)
• Reflection coefficient (Rho)
• Return loss (dB)
• Mismatch loss (dB)

Converters:
• Power (dBm, Watt, dBW)
• Voltage (V, dBV, dBµV)
• Current (dBµA, dBA, A, µA)
• Terminated (dBm, dBµV, dBµA, V)
• Field strength (dBµV/m, V/m, dBmW/m², dBµA/m, W/m², dBpT)
• Distance (cm, m, in., yd, km, mi.)

Reference:
• RF spectrum (ITU)
• Amateur bands
• Amateur band plan – IARU region 1
• Amateur Q codes
• Phonetic alphabet (NATO)
• Decibel suffixes
• SI unit prefixes
• Abbreviations
Updated on
Dec 22, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Ratings and reviews

4.6
140 reviews
gerald schuler
April 29, 2026
there is a big lack on information, looks not highly professional to me. Input of the antenna gain has only the unit dB. But this is confusing, the correct units are dBi or dBd. The difference makes 4.3dB. Then i also can estimate the gain roughly and dont need to measure
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Duane Matthes
January 19, 2026
Simply fantastic! If you thought the basic version was good, you're going to really like this one! Highly functional, easy to use, and laid out well. Bravo!
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Dan Szymański
December 27, 2025
app installed but locked up on me. now can not open a fav tab or anything
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