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CEA 109-D-2010 (R2015) (ANSI)
Intermediate Frequencies for Entertainment Receivers
CEA-109-D specifies Intermediate Frequencies (IFs) to be used in Standard Broadcast (AM), FM, and TV broadcast receivers. In CEA-109-D, the term Intermediate Frequency (IF) refers to the dominant interference-rejecting and passband-shaping circuits in receiver front-ends.
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Consumer Electronics Association [cea]