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<h2>Nokia microwave radios</h2>

<p>The Nokia microwave radios are so called split-mount equipment
which always consist of a microwave part and antenna mounted outdoors, and
a baseband functionality mounted indoors. The indoor solution can be either
integrated or standalone. The outdoor and indoor parts are interconnected
with a single coaxial Nokia Flexbus cable.</p>


<p>The indoor units of Nokia PDH microwave radios, Nokia FlexiHopper
microwave radio and Nokia MetroHopper radio are integrated into Nokia UltraSite
GSM/EDGE Base Station, Nokia MetroSite GSM/EDGE Base Station and Nokia Talk-family
base stations as plug-in units that fit directly to the base station cabinet.</p>


<p>The Nokia MetroHub standalone TDM cross-connect node also
provides housing for the plug-in indoor units with Nokia Flexbus interfaces
for Nokia FlexiHopper and Nokia MetroHopper microwave radios.</p>


<p>A 19 in. rack-mountable standalone indoor unit (FIU 19)
provides a separate E1 access to MetroHopper and FlexiHopper microwave radios
if a standalone transmission solution is required.</p>


<p>PowerHopper, the Nokia SDH radio indoor unit, needs a separate
19 in. installation space as well as the external third party SDH multiplexer
which provides the E1 access to the STM-1 input of the radio.</p>


<p>The Nokia microwave radios can be centrally managed by
Nokia NetAct.</p>


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<h3>Nokia
FlexiHopper microwave radio</h3>
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<p>The Nokia FlexiHopper PDH microwave radio family includes
models for 7, 8, 13, 15, 18, 23, 26 and 38 GHz frequency bands. The radio
transport capacity of all Nokia FlexiHopper frequency variants is 2x2, 4x2,
8x2 or 16x2 Mbit/s. This can be selected by using the node manager or the
network management system (Nokia NetAct) without any hardware changes. The
Nokia FlexiHopper radios use forward error correction (FEC) and interleaving
to improve signal quality which make them an ideal media for transporting
E1 traffic carrying the Abis interface.</p>


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<h3>Nokia
MetroHopper radio</h3>
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<p>The capacity of the Nokia MetroHopper PDH radio is 4x2
Mbit/s. It uses a 58 GHz frequency band, which does not require co-ordinated
frequency planning and thus minimises the approval and planning procedure.
The 58 GHz band has the unique natural characteristic of additional oxygen
absorption. This attenuation limits feasible hop lengths to less than 800
m (depending on climate conditions). Nokia MetroHopper is an optimal solution
for the GSM/WCDMA microcellular access.</p>


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<h3>Nokia
PowerHopper</h3>
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<p>Nokia PowerHopper is an SDH radio that provides STM-1 (155
Mbit/s) transmission capacity. It consists of an outdoor unit and a 19 in.
rack-mountable standalone indoor unit. The interconnection between these two
units is made by using a single coaxial cable that also feeds power to the
outdoor unit. The STM-1 interface of the indoor unit can be connected directly
to the STM-1 interface of an external SDH add-drop multiplexer which can provide
various smaller capacity interfaces to be transported over STM-1. The Nokia
PowerHopper SDH microwave radio is available for 7, 8, 15, 18, 23, 26 and
38 GHz frequency bands. The protection method against equipment faults is
1+1 HSB.</p>
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