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Tracking Transmitter/FM Radio Receiver

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RonL

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I'm looking for a 1.5 or 3Vdc Tracking Transmitter diagram. I have located several that use a LM3909 IC, unfortunately that IC has been discontined. There are 2,3 and 4 transistor designs out there but I am not sure how realiable or accurate the frequncy will be? Anybody got any ideas?
 
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