Is Your Antenna Mast Extended?
The first thing to check is the connection between the antenna cable and the back of your head unit.
If the connection is solid, you shouldnt notice anything.
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If the connection is loose, youll probably notice the tuner drop and then reacquire the signal.
If that happens, you should tighten the antenna and check the grounds.
In that case,replacing the antennawill usually do the trick.
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There are also a handful of other cases that call for a new antenna.
In some cases, a whip antenna will provide better reception.
That being said, not all head unit radio tuners are created equal.
So if nothing else does the trick, you may just have a busted car radio on your hands.