The second unit was a magnetron radar (PRIMUS 880 Digital Weather Radar System, Honeywell International Inc.) The magnetron radar emits in the 9.36–9.40 GHz frequency range. However, this unit has a lower duty cycle (0.048%) and shorter interpulse period (2 μs) than the solid state radar. The antenna of the magnetron radar has a gain of 28.5 dBi, and scans at an average rate of 58° s−1. While having a peak power of 10,000 W, the magnetron radar has a power density of approximately 0.27 mW/cm2 at a distance of 10 m, which is lower than the solid state radar (1.01 mW/cm2 at 10 m). Overall, the magnetron radar had a higher peak power but a lower power density than the solid state radar. Nevertheless, both units are used in aircraft: the magnetron radar on smaller, business-type jets and helicopters, and the solid state radar on larger commercial airplanes (Levi Bunch, pers. comm.).