At what altitude does radar work

At what altitude does radar work? There are (at least) three reasons that flying at a low altitude will allow the pilot to evade radar detection. Most air traffic operates at 5,000-40,000 feet when in transit from one airport to another, dipping below these altitudes to take off and land. For this reason, most radar antennas are aimed relatively high. Reference: How does flying at low altitude allow an aircraft to avoid radar ... https://www.quora.com/How-does-flying-at-low-altitude-allow-an-aircraft-to-avoid-radar-detection-What-altitude-range-is-one-able-to-avoid-detection-If-flying-at-low-altitude-allows-an-aircraft-to-avoid-detection-how-does-flying-at-high-altitudes-achieve-the-same Jun 3, 2019

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