Page 10 Micro Rain Radar MRR-2 METEK
2012-02-29 Valid for MRR Service Version 6.0.0.3 / Firmware 6.00
4.2 Description of the Components
4.2.1 Parabolic Dish
The antenna is used for the transmission of the RADAR signals and the
receiving of backscattered signals. It is designed as an offset parabolic dish
(see Figure 1). Its largest diameter is 70 cm, the beam width is 2°. Due to the
offset-design of the parabolic dish rainwater can drain off.
For antenna mounting the tube socket (see Figure 1) (inner Ø = 49.4 mm) is to
be plugged onto a pole with an outer diameter of max. 49 mm. The socket is
fastened with an M10 screw.
Connect a ground wire to this screw which serves as a surge protector.
Check the vertical alignment of the antenna with the built in bubble level.
The transmitting and receiving properties of the antenna affect the radar
calibration. Therefore the reflector surface should be clean (e.g. free from
leaves or wet snow). For the same reason any mechanical deformation of the
parabolic dish must be avoided. If nevertheless obvious deformation occurred,
the reflector must be replaced.
4.2.2 Antenna Heating (Option)
Figure 2: Antenna Heating
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