User preferences

Personalise Ham Calculator

Save your Maidenhead grid, favourite unit system and default callsign so tools open with the right defaults.

Home grid (6 characters) Preferred units Default callsign

Current defaults

Home grid Not set

Units Metric (metres, kilometres)

Default callsign Not set

Saved preferences automatically populate tools such as Satellite passes and Grid converter.

Ham Calculator

Three practical tools for day-to-day RF work: attenuator pads, balun design, and LC resonance.

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