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The F84/5 simultaneous audio allows to obtain the second standard of sound in TV sets and VCRs of the B/G standard.
After using the circuit, the reception of both audio systems is obtained, i.e.:
-6.5MHz (OIRT D/K standard) applicable in Polish Television
-5.5MHz (CCIR B/G standard) used in Western Europe and in some of our cable networks for broadcasting
Stereo.
Thanks to the use of a modern integrated circuit TDA9800 with a PLL loop in the demodulator circuit, and an appropriate input filter, very good sound quality has been obtained, also in cable networks.
SPECIFICATIONS:
- Supply voltage: 5V or 12V
- Input current: approx. 60mA
- Input: 38.9MHz IF signal with 32.4MHz audio carrier (SIF=6.5MHz)
- Output: 5.5MHz
- Dimensions: 45.5mm x 35mm x 16mm
- Weight: approx. 10g
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