Compatible sideband transmission

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A Compatible sideband transmission, also known as amplitude modulation equivalent (AME), is a type of single sideband RF modulation in which the carrier is deliberately reinserted at a lower level after its normal suppression to permit reception by conventional AM receivers.

The benefits of AME over conventional AM are increased spectral efficiency due to a reduction in bandwidth of 50% as well as an increase in signal efficiency. Conventional AM transmitters waste 66% of the transmitter RF power due to AM's overly-high powered carrier and redundant sideband. By using AME, less RF power is required at the transmitter to transmit the same quality of signal the same distance. [1]

AME is currently most popular in high frequency military communications.


 This article incorporates public domain material from the General Services Administration document "Federal Standard 1037C" (in support of MIL-STD-188).