What type of equipment is commonly used to implement an amateur radio mesh network?
A 2-meter VHF transceiver with a 1,200-baud modem
A computer running EchoLink to provide interface from the radio to the internet
A wireless router running custom firmware✓Bonne réponse
A 440 MHz transceiver with a 9,600-baud modem
Explication
Amateur mesh nodes are ordinary commercial wireless routers whose firmware has been replaced with amateur mesh firmware that sets the channel, bandwidth, power and identification for amateur operation and adds the mesh routing. Packet radio TNCs on 2 meters or 440 MHz are far too slow, and EchoLink is a voice-over-internet linking system, not a mesh.