Basic stereo FM signal generator
There must be quite a few of those little gadgets you used to plug into an MP3 player or whatever to transmit a low power FM radio signal to your car radio lying around unused in drawers etc nowadays, as technology has made them virtually redundant. What you have in that little box of tricks is a complete stereo FM signal generator with a simple audio interface for providing a test signal into your FM broadcast radio. Granted there is no output attenuation but I would say either by distance or circuit output modification a basic cheap useful generator could be made.
Alan.
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