Created "Mar 1, 2005"
Latest Revision Dec 31, 2009
S.C.A.  Is an Abbreviation for: "Subsiduary Communication Authorization".
This applies to an Additional 67 Khz Modulation on the standard FM Carrier. It is intended to provide Commerical-Free Background Music for Stores, Offices and others.
The Origional Schematic was not very good so I have Re-Drawn it. I suggest this unit be plased between the Reciever and amplifier. Before any Volume controls or tone controls.
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Picture Overlay, Courtesay of "Paul" in Ontario, Canada. I Assume it is Correct.
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