G'day all,
I got around to modifying my FM Transmitter (Velleman-Kit K1771) so that it can accept an input from an audio source such as a CD player, sound card, etc. Now I have a different problem.
There is a constant background humming in the broadcast. This changes in volume and pitch depending on where the transmitter is situated, generally if it is near metal, the noise increases. From this I gather that I need to shield it, the question is how do I do this?
Circuit Diagram **broken link removed**
Cheers!
Grant
I got around to modifying my FM Transmitter (Velleman-Kit K1771) so that it can accept an input from an audio source such as a CD player, sound card, etc. Now I have a different problem.
There is a constant background humming in the broadcast. This changes in volume and pitch depending on where the transmitter is situated, generally if it is near metal, the noise increases. From this I gather that I need to shield it, the question is how do I do this?
Circuit Diagram **broken link removed**
Cheers!
Grant