Product Sheet

D10522XXX-REF
Rev. 1.0_2022.08.12
Page 2 of 7
Superior radio performance
Both BS422 variants provide a maximum of 25W in TETRA and 50W
in DMR and Analog mode at the antenna connector providing superior
performance compared to most other available solutions.
AC power supply and built-in battery
The BS422-SP offers the same features as the standard BS422-S but is
designed with an AC power supply. It also has a built-in backup battery
as an option, which can operate the system for about one hour at 10W
TX power (TETRA).
BS422-SP LTE Modem
The BS422-SP may be ordered with an LTE module. The LTE option,
which includes a built-in antenna, provides seamless connectivity without
regular backbone connection so that users on site
stay connected with users in their home network.
Also an external antenna connector is available to improve connectivity
where necessary.
Frequency bands
Both variants are available in various frequency bands from mid-band to
high UHF. The versions offer up to a 150kHz wideband spectrum (center
frequency placement)for up to four carriers.
Band Mid-band VHF
TR RX/TX 68–87.5MHz 146–174MHz
Duplex spacing 0.5MHz 1MHz
TX carrier bandwidth 74kHz 74kHz
Carrier # 1–2 1–4
Duplex filter bandwidth 0.5MHz 1MHz
Other freq. on request
VHF
Band UHF UHF UHF 800MHz
TR RX/TX 380–400MHz 410–430MHz 450–470MHz 805–870MHz
Duplex spacing 10MHz 10MHz 10MHz 45MHz
TX carrier bandwidth 150kHz 150kHz 150kHz 150kHz
Carrier # 1–4 1–4 1–4 1–4
Duplex filter bandwidth 3.5MHz 3.5MHz 3.5MHz 10MHz
Other freq. on request
UHF
Redundancy
A fully integrated node controller eliminates the need for separate
hardware and enables very flexible installation options. Redundancy is
achieved by using a second BS422-S/BS422-SP. With such a setup
there is no single point of failure.
Frequency sharing
The ability to operate the BS422 in frequency sharing mode for TETRA,
DMR or Analog makes the BS422 an ideal solution for installations
where frequency scarcity is an issue. This option also enables easy and
improved indoor coverage, a clear advantage compared to standard
repeater systems in the market. Other advantages include full output
power, full feature operation set (when isolated from the master node),
full network management, redundancy, alarm handling and log system
integration.
Up to 10 base stations can be connected to one BS422 as a master unit.
System expansion
The BS422-S/BS422-SP setup is software controlled, and licenses
settings define the number/size of each technology as well as the number
of subscribers, profiles and organisations. The software licenses can be
changed at any time and so an upgrade of a network can be done when
the need arises. The update is done remotely and without handling of
large files over the network.
Connectivity: Power/Ethernet/synchronization
BS422-S
The BS422-S can be powered via -48VDC or via Power-over-Ethernet
(PoE).
BS422-SP
The BS422-SP can be powered via -48VDC or 100–240VAC or optionally
another DC supply. On top of that it supports charging and discharging of
the optional BAT422BS1 or an external battery (battery in/out).
Power consumption
Power consumption depends on a number of factors including
output power, the number of carriers, battery charging and ambient
temperatures.
When multiple carriers are used, a unique possibility for power savings
becomes possible. If a one-carrier setup is used it becomes equal to
single-tech units using just one carrier. However, with two carriers (either
using the same or a different technology) up to 30% power intake is
saved. With three carriers up to 45% power intake is saved and finally
with four carriers a power reduction of up to 55% is achieved. This can
be an important parameter when operating 24/7 and can be seen as
best-in-class for these product types.
Each BS422-S/BS422-SP offers an EXT and an INT connection interface.
The INT connection is used for communication between the nodes
based on a multicast IP, whereas the EXT connection is used to integrate
applications and third-party products like PABX systems or dispatchers.
Synchronization between the BS422-S/BS422-SP base stations is
possible via:
• GNSS – Global Navigation Satellite System receiver
• Precision Time Protocol (PTP, IEEE1588) synchronization
over LAN.