Packet radio
Packet radio is a form of packet switching technology used to transmit digital data via radio or wireless communications links. It uses the same concepts of data transmission via Datagram that are fu...
Packet radio - Wikipedia
High-speed multimedia radio
High-speed multimedia radio (HSMM) 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...
High-speed multimedia radio - Wikipedia
Q15X25
Q15X25 is a communications protocol for sending data over a radio link. It was designed by amateur radio operator Pawel Jalocha, SP9VRC, to be an open communications standard. Like all amateur radio c...
History of amateur radio
Throughout the history of amateur radio, amateur radio enthusiasts have made significant contributions to science, engineering, industry, and social services. Research by amateur radio operators has f...
History of amateur radio - Wikipedia
List of HSMM nodes
This page is intended to be a complete list of all HSMM or hinternet nodes worldwide.
List of HSMM nodes - Wikipedia
Very minimum shift keying
VMSK, for very minimum shift keying modulation, is one of several "ultra narrow-band modulation" (UNBM) methods claimed to send high-speed digital data through very low bandwidth (or narrowband) chann...
Amateur radio frequency allocations
Amateur radio frequency allocation is done by national telecommunications authorities. Globally, the International Telecommunication Union (ITU) oversees how much radio spectrum is set aside for amat...
Spartan Packet Radio Experiment
The Spartan Packet Radio Experiment (SPRE) was an Amateur Radio communications experiment that flew on the Space Shuttle Endeavor's STS-72 mission as part of NASA's Spartan/OAST-Flyer spacecraft in Ja...
Pulse-position modulation
Pulse-position modulation (PPM) is a form of signal modulation in which M message bits are encoded by transmitting a single pulse in one of possible time-shifts. This is repeated every T seconds, su...
FX.25 Forward Error Correction
FX.25 is a protocol extension to the AX.25 Link Layer Protocol. FX.25 provides a Forward Error Correction (FEC) capability while maintaining legacy compatibility with non-FEC equipment. FX.25 was cr...
CLOVER2000
CLOVER is the name of a series or class of modem modulation techniques (“waveforms”) specifically designed for use over high frequency (HF) radio systems.
In ARQ mode, all CCB’s (CLOVER Control Bl...
SITOR
SITOR (SImplex Teletype Over Radio) is a system for transmitting text messages. Although it uses the same frequency-shift keying (FSK) modulation used by regular radioteletype (RTTY), SITOR uses erro...
Winlink
Winlink, also known as the Winlink 2000 Network, is a worldwide radio messaging system that mixes internet technology and appropriate amateur radio radio frequency (RF) technologies. The system provid...
Amateur radio international operation
Amateur radio international reciprocal operating agreements permit Amateur Radio Operators (Hams) from one country to operate a station whilst traveling in another without the need to obtain additi...
Amateur radio international operation - Wikipedia
KA9Q
KA9Q, also called KA9Q NOS or simply NOS, was a popular early implementation of TCP/IP and associated protocols for amateur packet radio systems and smaller personal computers connected via serial lin...
Radioteletype
Radioteletype (RTTY) is a telecommunications system consisting originally of two or more electromechanical teleprinters in different locations connected by radio rather than a wired link. These machi...
Radioteletype - Wikipedia
TC-PAM
Trellis-Coded Pulse-Amplitude Modulation (TC-PAM) is the modulation format that is used in HDSL2 and G.SHDSL. It is a variant of trellis coded modulation (TCM) which uses a one-dimensional pulse-ampli...
Automatic Packet Reporting System
Automatic Packet Reporting System (APRS) is an amateur radio-based system for real time tactical digital communications of information of immediate value in the local area. In addition, all such data ...
XMax
xMax developed by xG Technology, Inc. is a cognitive radio based mobile VoIP and computer networking system operating in the license-free ISM 900 MHz band (902-928 MHz). xMax is built upon a...
ALOHAnet
ALOHAnet, also known as the ALOHA System, or simply ALOHA, was a pioneering computer networking system developed at the University of Hawaii. ALOHAnet became operational in June, 1971, providing the...
ALOHAnet - Wikipedia
KISS (TNC)
KISS is a protocol for communicating with a serial terminal node controller (TNC) device used for amateur radio. This allows the TNC to combine more features into a single device and standardizes comm...
Terminal node controller
A terminal node controller (TNC) is a device used by amateur radio operators to participate in AX.25 packet radio networks. It is similar in function to the Packet Assembler/Disassemblers used on X.2...
Terminal node controller - Wikipedia
PSK31
PSK31 or "Phase Shift Keying, 31 Baud" is a popular computer-soundcard-generated radioteletype mode, used primarily by amateur radio operators to conduct real-time keyboard-to-keyboard chat, most ofte...
PSK31 - Wikipedia
PACTOR
PACTOR is a radio modulation mode used by amateur radio operators, marine radio stations, and radio stations in isolated areas to send and receive digital information via radio. A robust network of P...
List of amateur radio modes
The following is a list of the modes of radio communication used in the amateur radio hobby.
Amateurs use a variety of voice, text, image, and data communications modes over radio. Generally new m...
List of amateur radio modes - Wikipedia
PSK63
PSK63 (meaning Phase Shift Keying at a rate of 63 baud) is a digital radio modulation mode used primarily in the amateur radio field to conduct real-time keyboard-to-keyboard informal text chat betwee...
PSK63 - Wikipedia