Figure 7-2 Horizon Compact - DragonWave Horizon COMPACT Plus Product Manual

7.1 Polarization
Point-to-point Horizon Compact Plus units that operate on licensed radio bands use a diplexer system to
simultaneously handle transmitted and received signals to/from the dish/reflector. In this case, both
transmit and receive radios must have the same signal polarization.
Horizon Compact Plus units that operate in the licensed Local Multi-point Distribution Service (LMDS)
radio band (31 GHz) and Horizon Compact Plus units that operate in the 24 GHz unlicensed radio band,
use an orthogonal mode transducer (OMT) to allow the radios to simultaneously transmit on one
polarization and receive on the opposite polarization.
7.1.1 Point-to-point Licensed Radio Bands
Both Horizon Compact Plus units must be mounted on the pole/tower oriented for the same polarization.
i.e. both vertical polarization, or both horizontal polarization.
Caution
Cross-polarized radios or antennas result in the signal strength being 20-
30 dB below expected RSL levels! Ensure both radios have the same
orientation (vertical or horizontal).
The radio frequency polarization is indicated by an arrow molded into the Horizon Compact Plus housing.
Attach the Horizon Compact Plus to the dish/reflector so that the arrow points either vertically or
horizontally, as required, when the assembly is attached to the mounting post or tower. With the arrow
horizontal (pointing to the left) – horizontal polarization; with the arrow vertical (pointing upwards) –
vertical polarization. For licensed frequencies, the required radio polarization is defined in your licensing
documentation.
Polarization Marker
This Horizon
Compact Plus unit is
shown positioned for
vertical polarization
(arrow vertical)
Figure 7-2 Horizon Compact Plus polarization marker
Horizon Compact Plus Release 1.0.1
Antenna Mounting and Tower Specifications
Wireless Ethernet Product User Manual – Volume 1
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