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
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