Units for 17 and 24 GHz does not have any HW difference between L and U units, because transmitting
and receiving channels are freely defined by software and technically separated from each other by
cross polarization.
Cross polarization
means that one side of the link uses one polarization for transmission (e.g. hori-
zontal) and the opposite polarization for receiving (e.g. vertical). The other side of the link is turned by
90°. Therefore it transmits and receives using opposite polarization with respect to the second unit.
Practical result for users is that units for 17 and 24 GHz must be mounted with reverse polarity on both
ends of the link.
Note
All units for 17 or 24 GHz band are hardware identical. Default factory settings in the pair use
different channels for L and U unit, so the link could be established by using default radio
parameters.
1.1.2. Supported bands
Note
Polarization
Sub-bands
Frequency
range [GHz]
Band
Type
Sub-band A is
free-band in Czech
Republic (CZ); Sub-
Single polarization
(Vertical or
Horizontal)
A (for CZ only),
B (global)
10.12–10.68
10 GHz
RAy3-10
band B is worldwide
licensed band
Worldwide licensed
band
Single polarization
(Vertical or
Horizontal)
A (lower part),
B (higher part)
10.70–11.70
11 GHz
RAy3-11
Free-band in sever-
al countries
(Vertical or
Horizontal)
-
17.10–17.30
17 GHz
RAy3-17
Worldwide licensed
band
Single polarization
(Vertical or
Horizontal)
A (ETSI-lower
part),
B (ETSI-higher
part),
C (FCC)
17.70–19.70
18 GHz
RAy3-18
Free-band in EU,
US, Canada and
(Vertical or
Horizontal)
-
24.00–24.25
24 GHz
RAy3-24
several other coun-
tries
Worldwide free-
band or light-li-
censed band
Single polarization
(Vertical or
Horizontal)
-
71–76 & 81–86
GHz
80 GHz
(E-band)
RAy3-80
RAy3 Microwave Link – © RACOM s.r.o.
12
Product
Summary of Contents for RAy3-11
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