Lmds Andu; Table 7-1 Allowable Dish /R - DragonWave Horizon COMPACT Plus Product Manual

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7.1.2 LMDS and Unlicensed Radio Bands (UL24)
For 31 GHz licensed LMDS radio bands and the 24 GHz unlicensed radio bands, regulatory bodies
require that radios in a system have to be cross-polarized. This means that the polarization of the
transmitter signal at one end of the link, or distribution system, is vertical and the transmitter signal
polarization at the other end is horizontal.
The radio at one end transmits with vertical polarization and receives with horizontal polarization, while
the other end transmits with horizontal polarization and receives with vertical polarization.
The radio frequency polarization is indicated by an arrow molded into the Horizon Compact Plus housing.
Caution
For 31 GHz LMDS and 24 GHz Unlicensed Band, radios MUST be cross-
polarized. i.e. Vertical polarization at one end and horizontal polarization at
the other. For 24 GHz unlicensed band It does not matter at which end
either radio is installed.
Attach the Horizon Compact Plus to the dish/reflector mount 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 LMDS and unlicensed frequencies, one end of the link has to have vertical
polarization and the other horizontally polarization (cross-polarized). For unlicensed frequencies (24 GHz)
it does not matter which end of the link has a specific polarization.
7.1.2.1 Unlicensed (UL24) Dish/Reflector Information
The 24 GHz unlicensed Horizon Compact Plus has been designed to operate with the dish/reflector types
listed in Table 7-1, and having a maximum gain of 43.7 dBi. Dish/reflectors not included in this list or
having a gain greater than 43.7dBi are strictly prohibited for use with this device.
Table 7-1 Allowable Dish/Reflectors – Unlicensed Systems
30 cm (1 foot)
60 cm (2 foot)
75 cm (2.5 foot)
Horizon Compact Plus Release 1.0.1
24UL Dish/Reflector Data
Andrews VHLP1-26DW
Andrews VHLP2-26DW
Andrews VHLP2.5-26DW
36.2dBi
40.8dBi
43.7dBi
Wireless Ethernet Product User Manual – Volume 1