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High-speed multimedia radio (HSMM), colloquially referred to as the hinternet, is the implementation of wireless data networks over amateur radio frequencies using commercial off-the-shelf (COTS) hardware such as 802.11 access points and D-Star equipment. Licensed amateur radio operators may use amplifiers and specialized antennas to increase the power and coverage of the 802.11 signal.

The name hinternet comes from a combination of the words ham and Internet and can be used to refer to any high speed data network over amateur radio, not just 802.11 networks.

Basics

The idea behind this implementation is to use the 900 MHz (33 cm), 2.4 GHz (13 cm), 3.4 GHz (9 cm), and 5.8 GHz (5 cm) amateur radio bands under the U.S. Federal Communications Commission (FCC) Part 97 rules (amateur radio service) instead of the Part 15 rules (unlicensed). This enables amateur operators to legally use higher output power for wireless devices and allows for longer-range communications. Such communications can be used to assist in emergency communications and disaster relief operations and in everyday amateur radio communications.

What can it do?

The "hinternet" can support most of the traffic that the Internet currently does, including video chat, voice, instant messaging, the Web (HTTP), file transfer (FTP), and forums. The only differences being that on the hinternet such services are community instead of commercially implemented and the "hinternet" is mostly wireless. The hinternet can even be connected to the Internet and used for "Web surfing", although because of the FCC regulations on permitted content, this is rarely done. Using high gain antennas and amplifiers, reliable long-distance wireless links over many miles are possible and only limited by the radio horizon.