111+ calculators
Antenna Calculators
Based on Karl Rothammel's "Antennas", 11th Edition
Popular Calculators
Half-Wave Dipole
Calculate half-wave dipole length by frequency
Groundplane (GP)
Calculate quarter-wave vertical antenna
3-Element Yagi
Three-element Yagi-Uda antenna
Delta Loop
Delta-shaped loop antenna
SWR Calculator
Calculate SWR, Return Loss, Mismatch Loss
Wavelength / Frequency
Convert between wavelength and frequency
Coax Loss
Calculate coaxial cable losses
L-Network
Calculate L-type matching network
λ/4 Transformer
Calculate quarter-wave transformer
G5RV
Multi-band G5RV antenna