High Frequency Internet Protocol (HFIP or HF-IP) is usually associated with

Automatic Link Establishment Automatic Link Establishment, commonly known as ALE, is the worldwide de facto standard for digitally initiating and sustaining HF radio communications. ALE is a feature in an HF communications radio transceiver system that enables the radio statio ...

and HF radio data communications. HFIP provides protocol layers enabling internet file transfer, chat,

web Web most often refers to: * Spider web, a silken structure created by the animal * World Wide Web or the Web, an Internet-based hypertext system Web, WEB, or the Web may also refer to: Computing * WEB, a literate programming system created by ...

and

email Electronic mail (email or e-mail) is a method of exchanging messages ("mail") between people using electronic devices. Email was thus conceived as the electronic ( digital) version of, or counterpart to, mail, at a time when "mail" meant ...

. HFIP commonly uses

ionospheric propagation In radio communication, skywave or skip refers to the Radio propagation, propagation of radio waves Reflection (physics), reflected or refraction, refracted back toward Earth from the ionosphere, an Ionization, electrically charged layer of the ...

of radio waves to form a wide area network that can span thousands of kilometers. HF transceivers in HFIP service typically run 20 to 150 watts for portable or mobile units, up to approximately 2000 watts transmitter output for high power base stations with HFIP servers. STANAG 5066 is a common HFIP standard. An

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 communic ...

HFIP network called HFLINK uses Automatic Link Establishment for initiating data communications, with ARQ 8FSK

frequency-shift keying Frequency-shift keying (FSK) is a frequency modulation scheme in which digital information is transmitted through discrete frequency changes of a carrier signal. The technology is used for communication systems such as telemetry, weather ball ...

and PSK

phase-shift keying Phase-shift keying (PSK) is a digital modulation process which conveys data by changing (modulating) the phase of a constant frequency reference signal (the carrier wave). The modulation is accomplished by varying the sine and cosine inputs at a ...

signals.

References

Internet protocols Amateur radio {{radio-comm-stub