D-MBR 3707-3708 PS NFPA Class A Signal Booster
PRODUCT DESCRIPTION AND USER’S MANUAL
Cobham Wireless – Coverage
Date: 17-Jan-16
www.cobham.com/wireless
Doc. No.00060CDUM Rev. 1.1 Page | 1
1 INTRODUCTION
D-MBR 3707-3708 PS NFPA (Digital Multi Band Repeater for Public Safety) is a Class A Digital Multi-
Channel Signal Booster (DCSB). It features an array of up to 12 DSP based, software-controlled,
variable bandwidth filters (up to 75Khz) per band , that are user-programmable across the 700 and
800 MHz bands.
D-MBR 3707-3708 PS NFPA supports all public safety technologies. For each filter, the user can
specify the start and stop frequencies to reduce the installation time of the signal booster and enable
a very wide range of filters selection.
Every parameter of D-MBR 3707-3708 PS NFPA, including filter tuning and selection, can be
controlled via web based management. The patented Cobham Wireless’ digital RF filter enables
simple initial setup for any channel plan and if necessary, allows some basic reconfiguration due to
re-banding.
The SALC -Smart ALC algorithm will reduce the gain to protect the signal booster from oscillation.
When the gain cannot be reduced anymore a shut-down mechanism will be triggered.
The signal booster protects against degradation of the system’s sensitivity and coverage. This is
implemented by the inbuilt AGC per-channel (filter) feature, which permits equalization of the
channel levels for uniform coverage.
This product meets the rigid requirements as defined by the NFPA and International Fire Code
developmental organizations. The amplifier is painted a Fire Life Safety Red, meets NEMA4
compliance for hose down, and provides all Alarming outputs as defined by NFPA 2010, Chapter 24
including system and antenna failures. The signal booster is a DC fed unit.
An external battery charger unit is available as well. The charger is connected to the AC and includes
a circuit to charge external batteries with all the dry contact alarms as defined in the NFPA standard:
AC failure, Charger failure and Low battery.
1.1 Main Features
• Class A - signal booster for SMR and public safety networks
• Supports APCO 25 phase 1 and 2 for public safety networks
• NFPA 72-2010, Chapter 24 and IFC 510.1 Compliant
• Support of 700MHz D block for LTE network
• Patented DSP filtering™ technology:
• Supports up to 12 independent filters per band
• User programmable bandwidth / frequency
• NEMA4 enclosure
• SALC-Smart ALC mechanism to protect the digital signal booster from oscillation and shutdown
the signal booster when required
• Web based management, SNMP traps
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