Please help improve this article by adding citations to reliable sources. It is based on characteristics of the signal , not on the transmitter used. Data transmission, telemetry or telecommand remote control. Pulse width modulation e. Single-sideband with reduced or variable carrier. Electronic telegraphy, intended to be decoded by machine radioteletype and digital modes. The 4 and 5 fields are optional.
|Date Added:||28 April 2010|
|File Size:||14.68 Mb|
|Operating Systems:||Windows NT/2000/XP/2003/2003/7/8/10 MacOS 10/X|
|Price:||Free* [*Free Regsitration Required]|
Asus F3E laptop Wi-Fi device drivers
Single-sideband with full carrier e. This page was last edited on 8 Julyat From Wikipedia, the free encyclopedia. Data transmission, telemetry or telecommand remote control. The bandwidth BBBB above is expressed as four characters: Electronic telegraphy, intended to be decoded by machine radioteletype and digital modes.
Code-division excluding spread spectrum. In such cases, there is usually f3f preferred conventional designator. An emission designation is of the form BBBB 45where BBBB is the bandwidth of the signal, 1 is a letter indicating the type of modulation used of the main carrier not including any subcarriers which is why FM stereo is F8E and not D8E2 is a digit representing the type of modulating signal again of the main carrier, 3 is a letter corresponding to the type of information transmitted, iwreless is a letter indicating the practical details of the transmitted information, and 5 is a letter that represents the method of multiplexing.
August Learn how and when to remove this template message. Telephony voice or music intended to be listened to by a human. Single-sideband with reduced or variable carrier.
Retrieved from ” https: Each type of radio emission is classified according to its bandwidthmethod of modulationnature of the modulating signal, and type of information transmitted on the carrier signal. Unsourced material may be challenged and ff3e. Types 4 and 5 were removed from use with the Radio Regulations. A similar designation system had been in use under prior Radio Regulations.
Types of radio emissions – Wikipedia
Views Read Edit View history. Double- sideband amplitude modulation e. Commercial-quality sound, independent FM signals, such as pilot tones, used to control the wirelesss signal.
There is some overlap in signal types, so a transmission might legitimately be described by two or more designators. Single-sideband with suppressed carrier e.
Independent sideband two sidebands containing different signals. Pulse width modulation e.
Shortwave utility and amateur stations. Please help improve this article by adding citations to reliable sources.
The International Telecommunication Union uses an internationally agreed system for classifying radio frequency signals. In previous editions, they had indicated facsimile and video, respectively.
This article needs additional citations for verification. Aural telegraphy, intended to be decoded by ear, such as Morse code.
Radio modulation modes Radio communications.