FM composite generator

I want a device that takes two audio signals, left and right, and generates the L+R and L-R signals to the FM specs in use in FM broadcasting, that I can use with a conventional FM signal generator like a HP 8640B, 8657A or a service monitor for FM stereo decoder testing. Is one still commercially available, or is one easily built such that it can be calibrated with reasonable ease?

Reply to
Bret Ludwig
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There's loads of schematics on the web for these, just Google for 'stereo encoder schematic' and you'll get over 68,000 results.


Reply to
Dave D

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