RACOM Ray2, User Manual

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3. Product
RAy2 microwave links enable transmissions in both bands requiring license fees and those that are
free. They work as a point-to-point link in a full duplex setting with transfer speeds of up to 360 Mbps.
Bandwidth can be configured from 1.75 up to 56 MHz. Modulation can be fixed or adaptive and can
be adjusted from QPSK to 256QAM. RAy2 microwave links can also be operated as a Short Range
Device (SRD).
Fig. 3.1: RAy2 – Microwave link
The link is formed by two FOD (Full Outdoor) units. In the case of links operating in the RAy2-17 and
RAy2-24 bands, both units have identical hardware. In the case of links operating in licensed bands,
one unit (labeled L) is transmitting in the Lower and receiving in the Upper part of the band. The other
unit (labeled U) is operating vice versa.
RAy2 links require the use of external parabolic antennas. Parabolic antennas from different producers
are available.
Cross polarization - valid only for links operating in the RAy2-17 and RAy2-24 bands:
One side of the link uses one polarization for transmission (e.g. horizontal) and the opposite polarization
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 unit.
21 © RACOM s.r.o. – RAy2 Microwave Link
Product