

The IARU Grid Locator System

- Grid squares are being used more and more by radio amateurs throughout the world to identify the location of their stations
post 17 Feb 2025
Grid Software Links →
HamCalc
HamCalc is collection of calculators for radio amateurs
HamCalc is a free collection of calculators for radio amateurs include Antenna ERP calculations, Attenuators, Audio Filter design, Coil Winding, Decibels, Great Circles map and calculator, HF Filters, HF Traps, Metric conversions OP Amps QRA Locator to Latitude/Longitude, Radio Horizon calculator
QRA Grid Locators
console application for the calculation of Maidenhead QRA Locators
LocCalc
distance and directions calculation program using
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HamCalc is collection of calculators for radio amateurs
HamCalc is a free collection of calculators for radio amateurs include Antenna ERP calculations, Attenuators, Audio Filter design, Coil Winding, Decibels, Great Circles map and calculator, HF Filters, HF Traps, Metric conversions OP Amps QRA Locator to Latitude/Longitude, Radio Horizon calculator
console application for the calculation of Maidenhead QRA Locators
distance and directions calculation program using

PSION Greyline Clock PSION Greyline Clock v. 1.0 is a UTC/Local clock showing sunlight/darkness area on the world map