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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A type of frequency discriminator that converts a frequency-modulated signal into an audio signal. It requires a limiter to prevent random amplitude variations of the FM signal from appearing in its output.  3, record 1, English, - Foster%2DSeeley%20discriminator

Record number: 1, Textual support number: 1 CONT

An improved demodulator, known as a phase-shift or Foster-Seely discriminator ... is sensitive to amplitude variations, or modulation, as well as to frequency modulation .... Therefore, a limiter should always precede the discriminator. The limiter removes amplitude variations from the FM signal.  4, record 1, English, - Foster%2DSeeley%20discriminator

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 CONT

Discriminateur de Foster-Seeley [...] Ce discriminateur comporte notamment deux circuits [...] accordés sur la fréquence [...] de la porteuse et couplés par mutuelle induction (couplage lâche). En parallèle avec le second circuit est placé un ensemble formé de deux circuits de redressement; il permet d'obtenir un signal de basse fréquence à partir de la tension engendrée entre les points P et Q.  1, record 1, French, - discriminateur%20de%20Foster%2DSeeley

Record 1,  Textual support,  Spanish