Modes: Difference between revisions

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== Digital modes ==
== Digital modes ==


Technically, whenever a signal is turned on and off to enable transmission of information, it can be considered to be a digital mode. Under this definition, CW is certainly a digital mode. This section refers to methods of transmitting information that are digital, or that require digital processing in part of the transmission or receiving process.
Technically, whenever a signal is turned on and off to enable transmission of information, it can be considered to be a digital mode. Under this definition, CW is certainly a digital mode. This section refers to methods of transmitting that are digital, or that require digital processing in part of the transmission or receiving process.





Revision as of 03:35, 12 February 2008

A mode is the way of changing electromagnetic waves, modulating them so that transmission of information is possible. There are three "true" modes, or methods of modulation: Amplitude Modulation (AM), Frequency Modulation (FM) and Continuous Wave (CW)


"True" Modes

AM

CW

FM


Digital modes

Technically, whenever a signal is turned on and off to enable transmission of information, it can be considered to be a digital mode. Under this definition, CW is certainly a digital mode. This section refers to methods of transmitting that are digital, or that require digital processing in part of the transmission or receiving process.


APRS

Digital Modes What do they sound like

D-Star

Echolink

IRLP

SSTV