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Kumpula C-band weather radar (KUM) (Vaisala Weather Radar prototype) State of the art dual-polarization Doppler weather radar. Kumpula C-Band radar was installed in December 2004 at the University of Helsinki Kumpula campus. It is located on the top of the Department of Physics building, 59 m above the sea level (30 m above ground level) . Antenna Center fed parabolic reflector Diameter = 4.20 m Beamwidth = 1.05 deg Gain ~ 44.5 dB Feed is corrugated horn with OMT polarization Horizontal or Simultaneous (SHV) ICPR < -35 dB RCP8 antenna control Transmitter Klystron air cooled 250 kw peak power Freq = 5610 MHz (5.348 cm) Duty cycle limit = .005 Pulse length = 0.5 - 20.0 us PRF = 200 - 2000 Hz Receiver Antenna Mounted Receiver (Sigmet RVP8) Horizontal and Vertical parallel receivers MDS  -110 - -130 dBm Transportable C-band Weather Radar Single polarization weather radar system. Antenna Diameter     -  4.3 m Gain             -  44.5 dB Beam width -  0.9 deg Transmitter C-band, magnetron Peak power - 250 kW Pulse width  - 0.5 - 2 us Receiver Sigmet RVP7 Dynamic range 72 - 80 dB MDS  -105 - -115 dBm Hydrometeor spectrometer