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| General Electronics Chat This forum is for general chat about electronics, eg: Dont know what a part does? Dont know how to read a circuit? Want to get an opinion? |
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25th April 2007, 11:42 PM
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FM Transmitter noise
I'm using a FM transmitter to re-broadcast a Sirius radio signal. The FM transmitter works great, tested it using a portable MP3 player as an audio source. The MP3 player is powered by a single AAA battery. When I connect the Sirius radio dock audio line into the transmitter, the broadcast signal becomes distorted (static), even with the Sirius radio turned off. The problem goes away when I unplug the wallwart for the Sirius radio. I thought about adding some bypass filter caps to the Fm transmitter power supply. Am I going in the right direction, since the MP3 player powered by a seperate power source didn't produce any distortion?
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26th April 2007, 12:10 AM
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Possible noise from a switchmode supply?
__________________
"Because I be what I be. I would tell you what you want to know if I
could, mum, but I be a cat, and no cat anywhere ever gave anyone a straight answer, har har." |
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