Tools
All calculators, helpers and small applications.
APRS Passcode Generator
Calculates the APRS-IS passcode from an amateur radio callsign.
Hex ↔ Dec Converter
Converts hexadecimal and decimal numbers quickly in both directions.
Frequency Calculator
Calculates wavelength, lambda/2 and lambda/4 values from a frequency.
Locator Finder
Determines your Maidenhead locator from your current location.
BOS Channel Calculator
Calculates lower-band and upper-band frequencies from an analog BOS channel number.
Spelling Helper
Converts text into the German or NATO spelling alphabet.
DL Band Plan
Shows German amateur radio bands by license class and operating mode.
Cable Loss
Calculates attenuation, output power and loss for coaxial cables.
Power Converter
Converts RF power between dBm and watts.