- VHF and UHF
- DIGITAL and ANALOG, with autosensing
- Two 512 channel repeaters/bases in one package capable
Key Features
- Built-in P25 IMBE vocoding and P25 OFB DES encryption
- Simultaneous operation and linking DIGITAL and ANALOG
- Simultaneous operation and linking VHF and UHF
- Base station/repeater operating modes
- Direct connection to existing tone remote and console systems, PSTN and microwave
links
- Multiple call types (including individual calls and group calls)
- IP-enabled providing VoIP and Webbased real-time control and user, Web-diagnostic,
monitoring and alarm information using corporate intranets and public internets
- Easy programming via Windows®
P25 Digital and Analog Interoperability, All in One Box.
The DRB-25 is a compact base station/repeater unit, fully compatible with the APCO
Project 25 (P25) standard of secure digital radio. Its high power, features and
flexibility make it an ideal building block for conventional radio networks.
The DRB-25 supports simultaneous analog and digital P25 operation. Its crossband
feature permits communication across different bands as well, making the DRB-25
a highly cost effective migration to digital radio.
Applications
The DRB-25’s modular design and software based features make it an extremely
flexible building block for a wide range of network applications.
The DRB-25 can operate in a stand-alone mode or within a conventional network using
remote repeaters.
Its compatibility with P25 means that it is ideal for use by public safety organizations
requiring a high level of security and interoperability, as well as public utilities
(such as power companies) and transport organizations (such as railways).
Available in both VHF and UHF bands the DRB-25 can easily be implemented in a wide
range of situations. Interconnection to the PSTN or a microwave bearer is available
through a standard 2-wire or 4-wire + E&M interface.
The DRB-25’s compact dual radio configuration is a very cost effective solution
for remote locations. One channel can be used as a base station or repeater for
general communications, while the second channel acts as a link to other base stations
or repeaters.
Fully Software Controlled
The DRB-25’s modular design means there’s no field tuning, adjustments,
or alignments necessary. Once the unit is set to your specifications, any future
changes are a simple hot-swap of the appropriate module.
Built-in PC Web Server
Control / monitor your system remotely via a built-in ethernet port. Watch critical
user info, analyze system activity, transmit, receive, perform diagnostics, monitor
NAC activity, change channels, view signal levels, and more, all from a PC Web browser

Linking Flexibility
The DRB-25 may be configured with one or two independent channels. Each channel
may operate as an analog and/or a P25 digital repeater or may also be programmed
to autosense the mode of a received signal and thus be shared between analog and
digital users. With built-in P25 vocoding and DES encryption the DRB-25 may be connected
directly to existing tone-based remote and console equipment using 2W and 4W E/M
circuits. Direct connection to 2W telephone lines for analog and P25 digital calls
is also supported. “IP enabled” connection to corporate intranets and
public internets and providing VoIP and control, monitoring and diagnostics through
and built-in Web server.
Link Different Modes
Applicable during a migration to digital operation or for interoperablity or to
provide interoperability between analog and digital users operating in the same
geographic area. The users may be operating in different frequency bands.

Link Wide Areas
Two DRB-25s each configured with 2 channels may be used in either analog or digital
mode to provide coverage over a wider area. The coverage and linking channels may
use different bands. The DRB-25s are transparent to CTSS/CDCSS and P25 signaling.