ClearNode

A pre-configured Raspberry Pi-based AllStar, EchoLink and digital modes simplex node with integrated low power  FM transceiver.

aprs.fi

Real-time, interactive APRS (Automatic Packet Reporting System) mapping and more.

AllStar

AllStarLink is a network of Amateur Radio repeaters, remote base stations and hot spots accessible to each other via Voice over Internet Protocol.

VHF Propagation Map

Interactive map of current VHF propagation conditions

Tropospheric Ducting Forecast

Six day forecast of tropospheric ducting conditions for VHF, UHF and microwave radio and television propagation

DX Maps

Real-time radio propagation lists and information

EchoLink

EchoLink connects licensed amateur radio stations over the Internet using streaming-audio technology.

Internet Radio Linking Project

IRLP is a Voice-over-IP (VoIP) network that endeavors to reliably and inexpensively link amateur radio stations without the use of RF links, leased lines or satellites.

Alaska Morning Net

The Alaska Morning Net is a friendly ragchew net that meets daily on IRLP, EchoLink and AllStar.

North Alabama Repeater Association

NARA is an organization of amateur radio operators who maintain a number of analog and digital repeaters in the Huntsville, Alabama area.

ARRL

The ARRL is the U.S. national association for amateur radio.