Make sure the antennae is connected and good, Then you may try an anti-static kit from radio shack.
Static is the noise Occurs mainly on short, long and medium wave reception
Radio suppressors for the alternator etc., and suppressed spark plug leads.
By any chance have your battery cables been off ? If so , all the radio preset channels have to be reprogrammed
White noise
try plugging in your radio in a different wall plug. you might be sharing the same circuit causing noise in the line.
It's picking up the alternator as it spins. In some cases the radio or antenna may not be shielded anymore or if so equipped the noise suppressor has failed. You might be able to get a noise suppressor from a stereo shop.
FM radio is inherently less sensitive to natural noise ... not immunebut significantly less sensitive ... than AM radio is.
IT MAY NOT HAVE A CHOKE BUILT INTO THE CIRCUITRY. YOU CAN BUY A NOISE SUPPRESSOR AT RADIO SHACK. THIS SHOULD ELIMINATE MUCH OF THE ALTERNATOR WHINE NOISE. GOOD LUCK! ...BB
Radio static letters : "EMI"
There are a few possible causes. If the static changes with engine revs then you have a suppression issue. If the noise is general regardless of whether the engine is running then you need to look at the antenna or the radio itself. Ignition noise will typically produce a "tic, tic, tic" sound on the radio and is likely to be due to arcing around the HT leads or distibutor. The alternator can produce a whining noise if the suppressor is bad. The antenna can perform badly if it is damaged or if its earth connection to the car bodywork does not make a good electrical contact. If you think it might be your radio try substituting another.
my radio has static in it an i put another one in it an it still has static in it to.
Radio frequency Condensers (Capacitor) is used to reduce or eliminate ignition noise being received by the broadcast radio in the car.