Editing Satellite modem (section)

{{Short description|Type of modem}}
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A '''satellite modem''' or '''satmodem''' is a [[modem]] used to establish [[data transfer]]s using a [[communications satellite]] as a [[relay]]. A satellite modem's main function is to transform an input bitstream to a radio signal and vice versa. 

There are some devices that include only a demodulator (and no modulator, thus only allowing data to be downloaded by satellite) that are also referred to as "satellite modems." These devices are used in [[satellite Internet access]] (in this case uploaded data is transferred through a conventional [[PSTN]] modem or an [[ADSL]] modem).