RACOM RAy11, Руководство пользователя

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3. Product
The RAy microwave links are designed for data transmissions in both licensed and unlicensed ISM
bands. They work as a point-to-point link in full duplex regime with transfer speed up to 360 Mbps.
Bandwidth is selectable from 1.75 up to 56 MHz. Modulation can be fixed or adaptive and can be ad-
justed from QPSK to 256QAM.
Fig. 3.1: RAy – Microwave link
The link is formed by two FOD (Full Outdoor) stations. In the case of links operating in the ISM bands
(RAy17, RAy24), both stations have identical hardware. In the case of links operating in the licensed
bands, one unit is transmitting in the Lower and receiving in the Upper part of the band. The other unit
is operating vice versa.
RAy links are used with external parabolic antennas. Parabolic antennas from different producers are
available.
Cross polarization - valid only for links operating in the ISM bands (RAy17, RAy24):
One side of the link uses one polarization for transmission (e.g. horizontal) and the opposite polarity
for receiving (e.g. vertical). The other side of the link is turned by 90°. It therefore transmits and receives
using opposite polarizations with respect to the other side.
19 © RACOM s.r.o. – RAy Microwave Link
Product