Radio Noise

[leo1500]

I would like to build a radio noise filter. When i put on my cooling dc  fans in the  stereo cabinet ,  the radio makes a heavy static noise . when i shut the fans off it stops. i need help. Thank you Leo

 

[audioguru2]

Try connecting to the motor two 0.1uF ceramic disc capacitors with very short leads. Each capacitor from each terminal to the motor's metal case.

It would be difficult to filter the radio signals. If all the interference is filtered out then the radio won't pick up stations.

 

[leo1500]

To Audioguru , thank you very much  for your advice it works very well. Leo