SOUSY = Sounding System is a radar operated by the Max-Planck-Institut für Aeronomie located in the Harz mountains in Germany:

• Coherent MST (mesosphere/stratosphere/troposphere) radar
• Frequency 53.5 MHz
• Peak transmitting power 600 kW
• Phased array antenna, 196 Yagi antennas,  effective dia. 64 m - see the Figure.
• Main beam width 5°
• Estimated limiting magnitude 12 mag
• Sends 8-bit complementary-coded pulse
• Upon receiving, decode signal, record phase and amplitude
• Store on removable hard disk - up to 30 h can be stored
• Possible data to be obtained: range, time, phase, amplitude
• Location: 10.49 °E, 51.66 °N (Harz mountains)
• More info can be found at the Max-Planck SOUSY site

Overview of the radar parameters for this experiment

• Beam direction: 4 (NE, NW, SE, SW), zenith angle 15º
• Pulse length: 2 µs
• Height resolution: 600 m
• Height range: 76 to 102 km
• Half-power half-width 2.5 °
• Average power 24 kW