Sound IF Detector Module
Module demodulating 4.5MHz FM sound carrier from TV IF signal for audio output. Audio detection system under HTS 8529.90.39.00 per U.S. note 9(e).
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Alternative Classifications
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Import Tips & Compliance
• Specify 4.5MHz (US) or 5.5/6.5MHz (other) sound IF compatibility
• Document stereo pilot tone detection capability
• Avoid 'general audio detector' description
Related Products under HTS 8529.90.39.00
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Integrated circuit extracting R-Y, B-Y, and luminance signals from composite chroma in analog TVs. U.S. note 9(b) video processing component for HTS 8529.90.39.00.
AGC Control Circuit
Automatic gain control circuitry maintaining constant TV signal levels across varying input strengths. Tuner control system qualifying for HTS 8529.90.39.00.
Sync Separator Integrated Circuit
IC extracting horizontal/vertical sync pulses from composite video for TV timing. Synchronizing circuitry under HTS 8529.90.39.00 classification.
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Module controlling Y-signal bandwidth and aperture correction for sharp TV pictures. Video processing component for HTS 8529.90.39.00 per note 9(b).
Video IF Amplifier Board
A video intermediate frequency amplifying and detecting system component for television receivers that processes received TV signals. Classified under HTS 8529.90.39.00 per U.S. note 9(c) as a specific TV receiver part, not a printed circuit assembly.
Horizontal Deflection Circuit Module
Dedicated module generating horizontal scanning signals for CRT television picture tubes. Covered by HTS 8529.90.39.00 as deflection circuitry in U.S. note 9(c).