RF exposure

EIRP safety distance checker

Average power with duty cycle and feedline loss, then compare against ICNIRP limits to obtain safe distance and power density.

Duty cycle is averaged over a six-minute window—adjust to match the operating pattern.

The near-field boundary is approximated from antenna size; the larger of it and the safety distance is used as guidance.

Ham Calculator

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

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