High performance radar antenna systems and microwave sensors
CHL radar antenna systems
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Antenna Turning Unit type ST2

Type Gearbox
Applicable antenna types Radar Antenna families 18 - 31 ft
Maximum Antenna weight 500 kg
Rotational speed antenna shaft (fixed) Available in the range from 10 to 60 rpm
Motor type 3-phase, 2,4,6 or 8-pole, squirrel cage
Power supply 230/400 VAC or 400/690 VAC
Motor power 1.1 up to 5.5 kw (optional)
Lubrication Mineral oil and grease
Environmental temperature range -25 to +50°C
Sound pressure level < 60 dBA (at 20 rpm)
Weight including oil Approx. 315 kg
(430 kg including support)
Dimensions Ø 1050 x 1083 mm (including support)

Standard features

  • One channel rotary joint for X-band with through going shaft
  • Single channel rotary shaft encoder with 4096 azimuth count pulses
  • Time Between Overhaul 10 years
  • Thermostat for gearbox heating
  • Gearbox heating

Available options

  • Cylindrical support for platform mounting of the Antenna Turning Unit
  • Spark subassembly for integrated lightning protection
  • Cold weather package for operation at temperatures down to -40°C
  • Oil level sensor
  • Slip ring unit (up to five rings), e.g. for antenna polarization control
  • Anti-vibration and noise suppressing mounting ring
  • Antenna tilt ring fixed or adjustable up to 10 degrees
  • Frequency inverter with integrated soft starter for speed control and smooth starting and stopping
  • Single channel rotary encoder with 8192 azimuth count pulses
  • Dual rotary encoder assembly (tandem encoder)
Datasheets available upon request.


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