What is AREDN?

AREDN (Amateur Radio Emergency Data Network) is a high-speed digital network that operates on amateur radio frequencies in the 2.4 GHz (13 cm), 3 GHz (9 cm), and 5 GHz (5 cm) bands. Licensed amateur radio operators have access to these frequencies and can use commercially available networking hardware that has been reprogrammed with AREDN firmware.

AREDN networks are typically built using antennas mounted on towers, buildings, or other elevated structures to create Point-to-Point (PtP) and Point-to-Multipoint (PtMP) connections. Because of the frequencies involved, reliable operation requires a clear line-of-sight path between stations.

With proper antenna height and an unobstructed path, links of 10 to 15 miles are common, with much longer distances possible under ideal conditions. Network speeds can exceed 600 Mbps on backbone links, while end-user connections typically operate in the 5 to 20 Mbps range.

AREDN  automatically discovers network nodes and determine the best path for traffic. If a node or link fails, AREDN can often reroute traffic through alternate paths. Internet-based tunnels may also be used to connect distant mesh networks when RF links are not practical.

What is FLMesh?

FLMesh is a statewide network of interconnected AREDN nodes throughout Florida. The concept was developed by Sean Haga (KD4WLE) and Gerard (WT0F) to provide a resilient digital communications infrastructure for amateur radio operators and emergency communications groups.

FLMesh includes multiple SuperNodes that connect Florida to the larger AREDN network, as well as dedicated tunnel servers that allow remote nodes to participate when RF connectivity is unavailable.

The network hosts numerous services, including:

• Voice over IP (VoIP)
• Multi-User Chat (MUC)
• Winlink gateways
• Packet radio gateways
• Mesh email servers
• Web servers
• IP cameras and webcams
• Repeater linking

These services provide valuable communications capabilities during both routine operations and emergency situations.

FLMesh and BCAT

The Brevard County ARES Team (BCAT) is actively expanding the FLMesh network throughout Brevard County. Current network infrastructure includes sites in Mims and Titusville, with additional locations planned in Melbourne and Palm Bay.

BCAT’s mesh network supports a growing range of digital communications services, including:

• Repeater interconnection and linking
• Packet BBS services
• Network backbone connectivity
• Computer-Aided Dispatch (CAD) support
• Asset tracking
• VoIP communications
• Emergency communications applications

As the network continues to grow, it will enhance communications capabilities throughout Brevard County and neighboring areas.

Current node locations and coverage information are available on the FLMesh Google Maps page.