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ATLAS Series 4.9 GHz_0606 

ATLAS Series 4.9 GHz

Wireless Ethernet Bridge for Licensed Public Safety Entities

  • 4.9 GHz Public Safety Band   
  • 45 Mbps of sustained throughput   
  • Point-to-point, OFDM   
  • Up to 30-mile range, 26 dB fade margin   
  • Adaptable Rate Modulation 

The Atlas P4900M is a rugged, outdoor, point-to-point solution that delivers sustained throughput up to 45 Mbps in the 4.9 GHz licensed band (4940-4990 MHz). This high-performance OFDM radio system is an ideal backhaul solution for long-range data connectivity and IP-video applications for public safety agencies and other 4.9 GHz license holders to build secure, interference-free wireless communications infrastructure with best-in-class features and performance.

Download the ATLAS Series 4.9 GHz data sheet - PDF Version 

4.9 GHz License Guidelines

State and local government entities that provide public safety services are eligible to apply for a 4.9-GHz license. Private entities that provide support services for public safety (such as private service providers), may be eligible for sharing agreements with license holders. The 4.9 GHz band is shared by all licensees, who must coordinate usage of the band with other licensees within their areas of authority.


Performance & Flexibility

The Atlas P4900M is a carrier grade, point-to-point backhaul solution that delivers up to 45 Mbps using the 4.9 GHz licensed band. The P4900M uses a contention-free point-to-point protocol and user-selectable data rates of 6, 12, 18, 24, 36, 48 and 54 Mbps. Outstanding features include electronically switchable dual-polarized antennas, adaptable rate modulation, and automatic retransmit request (ARQ). Packet aggregation allows superior FTP performance over long transmission ranges.

Antenna Options

The P4900M is available in three versions including two with integrated dual polarized antennas (18 or 22 dBi) as well as a connectorized version for external antennas.

Compact/Rugged Design

The P4900M is designed to withstand the harshest environments, encased in a heavy-duty aluminum housing. These durable fully weatherized outdoor units offer a small footprint and operate from -40° to 140° F. Radios are powered using Power-over-Ethernet (PoE) ensuring ease of installation and quick deployment.

Security and Authentication

The Atlas Series features MAC level address authentication, 128-bit proprietary encryption, over-the-air data scrambling, and two-level password control via SSL for secure operation.

Management Features

The Atlas Series enables remote and local management via Telnet, SNMP and HTTP via browser. Powerful tools such as site survey, asymmetrical bandwidth control, and remote temperature and input voltage measurements allow operators total control/flexibility to monitor and manage their network. The radios also feature a built-in LED alignment tool and a universal mounting bracket to minimize deployment costs.

Compatibility / Range Chart

Part NumberModel TypeAntennaRange / Fade Margin
5 Mbps 45 Mbps
ATLAS P4900M-INT-18Radio w/ integrated antenna
(Layer-2 Bridge)
Integrated, 18 dBi15 miles
15 dB
2 miles
10 dB
ATLAS P4900M-INT-22Radio w/ integrated antenna
(Layer-2 Bridge)
Integrated, 22 dBi20 miles
20 dB
5 miles
10 dB
ATLAS P4900M-EXTConnectorized radio
(Layer-2 Bridge)
External, 27 dBi30 miles
26 dB
15 miles
10 dB



In 2003, the U.S. Federal Communications Commission (FCC) allocated 50 MHz of spectrum in the 4.9 GHz band to public safety services. Public safety agencies can use this 4.9 GHz band to implement wireless networks with advanced services for the transmission of mission-critical information such as streaming video, data access, maps, and missing person images. The FCC intended to accommodate a variety of new broadband applications such as high-speed digital technologies and wireless LANs for incident scene management, dispatch operations, and vehicular operations.

All state and local government entities that provide public safety services (defined as being focused on the protection of the safety of life, health, or property) are eligible to apply for a 4.9-GHz license. Entities that do not meet these eligibility requirements, but that provide services in support of public safety (for example, private infrastructure companies), can negotiate sharing agreements with license holders.


A 4.9 GHz band license gives the licensee authority to operate on any authorized channel in this band within the applicant's legal jurisdiction (city, county, state, etc.). The 4.9 GHz band is shared by all licensees, who must coordinate usage of the band with other licensees within their areas of authority. Licenses are granted for a term of 10 years.

The license gives authority to construct and operate:

  • Any number of wireless links or base stations anywhere within the area authorized by the license   
  • Base and mobile units, including portable and handheld units