Designed For
Licensed amateur radio operators, antenna builders, portable operators, and electronics hobbyists.
Included Calculators
- Antenna length
- SWR and return loss
- Coax loss
- Decibel conversions
- Grid square tools
SkyCalc
SkyCalc: Ham Radio Calc
Radio calculators for antenna length, SWR, coax loss, decibels, Ohm's law, Maidenhead grid squares, and reference cards.
Calculation Workflow
Enter valuesUse field units and project conditions.
Review resultCheck the calculated output and assumptions.
Verify externallyConfirm against official sources where the work is regulated or safety critical.