If you have a radio you enjoy listening to but cringe every time a television or the microwave causes strange noises to emanate from it, then you can apply a simple fix. When radios are powered on, the antenna isn’t the only object that receives signals – the power cord does as well. Interference picked up from other electronic devices causes a buzzing or static in the sound coming from the radio. You don’t need to actually build an elaborate filter to reduce or eliminate unwanted radio noise. Instead, you can use a simple device. Tips Writer Bio

How to Build a Noise Filter for a Radio - 26