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Dish Size Guide

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Find the minimum dish diameter needed to receive a satellite signal at your location.

How dish size is calculated

Dish size depends on:

  • EIRP — satellite's effective power at your location (dBW)
  • Elevation — lower angles need larger dishes
  • Longitude offset — being far from satellite center reduces EIRP

Formula: dish_cm = 10^((C/N_required - EIRP_effective + losses) / 20) * k

We use simplified EIRP contour estimates. For exact sizing, consult your satellite operator's coverage maps.