Key & Carrier — amateur radio calculators, reference charts, and equipment profiles
Calculators and reference for amateur radio, GMRS, antennas, and portable operations.
Calculators
Amateur Radio
Full system designer
Dipole calculator
Coax loss
SWR calculator
Link budget
Band plan
Power converter
Freq / wavelength
Resonant frequency
RF exposure / MPE
Band plan comparison
Callsign lookup
GMRS
GMRS channels
PMR446 channels
UHF CB channels (AU)
Repeater range
FRS / GMRS / MURS
Simplex range
CB
CB channels
CB antenna calculator
CB SWR tuning guide
Antennas
Wire antenna designer
J-pole calculator
Ground plane
Yagi designer
Gain converter
Feed line comparison
Radio horizon
Impedance matching
Programming
CTCSS / DCS tones
Channel plan builder
Repeater offsets
Portable
Battery runtime
Solar sizing
Go-kit weight
Duty cycle power
Equipment
18
Handheld radios
18
Base / HF rigs
8
Mobile radios
16
Antennas
10
GMRS radios
8
CB radios
8
SDR receivers