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2. Air Route Surveillance Radar - Wikipedia

   en.wikipedia.org/wiki/Air_Route_Surveillance_Radar

   L band. Range. 290 miles. The Air Route Surveillance Radar is a long-range radar system. It is used by the United States Air Force and the Federal Aviation Administration to control airspace within and around the borders of the United States. The ARSR-4 is the FAA's most recent (late 1980s, early 1990s) addition to the "Long Range" series of ...

3. Radar mile - Wikipedia

   en.wikipedia.org/wiki/Radar_mile

   Radar mile. Radar mile or radar nautical mile is an auxiliary constant for converting a (delay) time to the corresponding scale distance on the radar display. [1] Radar timing is usually expressed in microseconds. To relate radar timing to distances traveled by radar energy, you should know that radiated energy from radar set travels at ...

4. Radar horizon - Wikipedia

   en.wikipedia.org/wiki/Radar_horizon

   With this calculation, the horizon for a radar at a 1-mile (1.6 km) altitude is 89-mile (143 km). The radar horizon with an antenna height of 75 feet (23 m) over the ocean is 10-mile (16 km). However, since the pressure and water vapor content of the atmosphere varies with height, the path used by the radar beam is refracted by the change in ...

5. Radar signal characteristics - Wikipedia

   en.wikipedia.org/wiki/Radar_signal_characteristics

   A simple calculation reveals that a radar echo will take approximately 10.8 μs to return from a target 1 statute mile away (counting from the leading edge of the transmitter pulse (T 0), (sometimes known as transmitter main bang)). For convenience, these figures may also be expressed as 1 nautical mile in 12.4 μs or 1 kilometre in 6.7 μs.

6. Radar - Wikipedia

   en.wikipedia.org/wiki/Radar

   The radar mile is the time it takes for a radar pulse to travel one nautical mile, reflect off a target, and return to the radar antenna. Since a nautical mile is defined as 1,852 m, then dividing this distance by the speed of light (299,792,458 m/s), and then multiplying the result by 2 yields a result of 12.36 μs in duration.

7. Avoid Speeding Tickets: Experts Pick the Top Radar Detectors ...

   www.aol.com/avoid-speeding-tickets-7-top...

   Short-range radar detectors can only detect radar up to around 100 feet away, while more powerful (and more expensive) models like Uniden's R3 Extreme Long Range radar detector ($300 at Amazon ...