
4.9 GHz Wireless Broadband Interface
Card
Public Safety Band Transceiver Family
The FCC in the United States has allocated 50 MHz of licensed bandwidth in the 4.9-GHz
frequency band for wireless broadband access for the public safety agencies to support
mobile and fixed services. This licensed band enables the public safety organizations to
create highly secure wireless IP networks between a remote workforce and headquarters.
Improving communication through Broadband/IP applications empowers the remote
workforce with information and tools that traditionally were accessible only from within the
boundaries of an office building. Non-traditional public safety entities, such as utilities and
commercial entities, and the Federal Government may enter into sharing arrangements with
eligible traditional public safety entities to use the 4.9 GHz band in support of their missions
regarding homeland security and protection of life and property. Many other countries (e.g.
Japan and Australia) also have reserved this band for the exclusive use by the Public Safety
Agencies.
Target Applications
The 4.9 GHz band supports a wide variety of wireless broadband applications. The following
types of uses have primary status:
Wireless LANs for incident scene management (ad hoc mobile networks)
Mesh networks
Back-hauling for Wi-Fi hotspots
Voice over IP (VoIP)
Temporary fixed communications
Permanent fixed point-to-point/multipoint links that deliver broadband service
Permanent fixed point-to-point video surveillance
Permanent fixed point-to-point/multipoint backhaul of broadband traffic originating from 700
MHz public safety broadband networks
Doodle Labs’ family of 4.9 GHz Wireless Broadband Interface Cards allow System
Integrators to rapidly develop the wireless routers that provide integrated, wireless WAN or
LAN capabilities in the licensed band. These routers can provide public safety, homeland
security, and transportation organizations with a mobile networking platform that extends the
edge of the IP network out to mobile workforce in vehicles, trains, or airplanes. The wireless
routers create a network in motion, enabling multiple devices in and around a vehicle to be
connected to the main network as the vehicle roams between wireless WAN networks. Fully
supports standards-based Mesh and Mobile IP applications for seamless roaming across
different types of wireless networks and technologies

Designed in the compact miniPCI-Express form factor, the 4.9 GHz Broadband transceivers
provide licensed, secure and fast communication. The 4.9 GHz transceivers are long range,
up to 29 dBm RF power, FCC Part 90, IEEE 802.11y and 802.11n compliant radio
Subsystems. They are developed specifically for applications needing very high throughput
over long range in the rugged/outdoor environments.
Key Features
4940~4990MHz operating band
Compliant with FCC Docket #00-32 on 4.9 GHz ruling, Part 90
Channel plans for USA and Japan
AP, STA and Ad-hoc modes to implement Point to Point, Infrastructure Point to multi Point,
and Mesh networks
Highly linear PA provides low EVM signals for 64 QAM
Up to 32 dBm of RF power helps to push downstream data at higher modulation rates
Integrated LNA for best-in-class Rx sensitivity
Single frequency transmit and Receive (TDD)
Supports 5/10/20 MHz channels to maximize spectrum efficiency
High selectivity band pass filters for increased noise immunity
Modular architecture allows a variety of mounting and heat management possibilities.
Loopback mode to assist FIPS AES certification
Dynamic Link adaptation to optimize throughput depending on channel conditions
Spatial Multiplexing for enhanced throughput
Space Time Block Coding for enhanced robustness
Beam forming for enhanced range and reception
Supports spatial multiplexing, cyclic-delay diversity (CDD), low-density parity check (LDPC),
maximal ratio combining (MRC)
Small packet size (96 Bytes) in AES encryption at full packet rate
Hardware NAT
Frame aggregation, block ACK
Support for IEEE 802.11 e, h, i, k, RO, v time stamp, and w standards