WINMOR is a

radio Radio is the technology of signaling and communicating using radio waves. Radio waves are electromagnetic waves of frequency between 30 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transm ...

transmission protocol intended to be used in the

Winlink Winlink, or formally, Winlink Global Radio Email (registered US Service Mark), also known as the Winlink 2000 Network, is a worldwide radio messaging system that uses amateur-band radio frequencies and government frequencies to provide radio int ...

2000 Global Radio E-mail System by

amateur radio Amateur radio, also known as ham radio, is the use of the radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emergency communi ...

operators, marine radio stations, and radio stations in isolated areas. WINMOR complemented the

PACTOR PACTOR is a radio modulation mode used by amateur radio operators, marine radio stations, military or government users such as the US Department of Homeland Security, and radio stations in isolated areas to send and receive digital information vi ...

modes in the high frequency portion of the

system, but since July 2020 has been deprecated by Winlink.org in favour of other, now more modern and capable protocols, such as ARDOP. WINMOR debuted at the 2008

ARRL The American Radio Relay League (ARRL) is the largest membership association of amateur radio enthusiasts in the United States. ARRL is a non-profit organization, and was co-founded on April 6, 1914, by Hiram Percy Maxim and Clarence D. Tuska ...

/ TAPR Digital Communications Conference. Unlike PACTOR II & III, only a simple computer soundcard-to-radio interface is required, as compared to PACTOR's relatively expensive external

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.25 networks, with the addition of a modem to ...

. It has two modes, either 500 or 1600

Hertz The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), equivalent to one event (or cycle) per second. The hertz is an SI derived unit whose expression in terms of SI base units is s−1, meaning that one her ...

bandwidth Bandwidth commonly refers to: * Bandwidth (signal processing) or ''analog bandwidth'', ''frequency bandwidth'', or ''radio bandwidth'', a measure of the width of a frequency range * Bandwidth (computing), the rate of data transfer, bit rate or thr ...

, and provides ARQ speeds ranging from 67 to at least 1300 bits per second, similar to PACTOR's various modes. It is fully documented and without restrictions or license issues preventing anyone from using the protocol in other software. WINMOR supports both connected ( ARQ) and FEC (broadcast) modes. Operational peer-to-peer (on-air) beta testing of WINMOR began on 17 September 2009. Deployment of RMS WINMOR servers for the Winlink system began in January 2010.

Transmission modes

500 Hz

uses 2 carriers, 1600 Hz

uses 8 carriers.{{cite web, url=http://www.arrl.org/files/file/WINMOR.pdf, title=Beta release of protocol specification Each carrier uses 46.875 Baud 4FSK or 93.75 Baud PSK using

Trellis Coded Modulation In telecommunication, trellis modulation (also known as trellis coded modulation, or simply TCM) is a modulation scheme that transmits information with high efficiency over band-limited channels such as telephone lines. Gottfried Ungerboeck invent ...

with 4, 8, or 16 phases.

References

External links

Digital Communications ConferenceWinlink WINMOR Information pageWINMOR users group
Radio technology

Transmission modes

See also

References

External links