My question is which is better for transmitting an audio signal on the common 88 – 108 fm band: the common 2n3904 NPN transistor or the PN2222A NPN or are they interchangeable. I have seen a lot of circuits and some have one and some have the other.
[EDIT]
I realized my question was not clear. For the time being I would be fine if you could tell me which of these transistors would be best for this circuit. I know the 2N3904 is used but would the other one be better or could they be interchanged?
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Best Answer
This can't be answered because you haven't provided a schematic and said what function exactly the transistor in question is supposed to perform. Either of those transistors could be appropriate for some functions in a FM transmitter.