Driver's door interferes with radio signal?

[pjohnston2020]

I recently bought an older Prizm, and installed my own aftermarket stereo. The stereo works great and sound quality is awesome, but the second I close my driver side door the radio gets fuzzy. All other sources such as Bluetooth and Aux work fine, but closing the door makes the radio reception diminish and become fuzzy. Does anybody have any idea why this happens?

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[BOOMINGRANDPA 5,000+ posts]

I recently bought an older Prizm, and installed my own aftermarket stereo. The stereo works great and sound quality is awesome, but the second I close my driver side door the radio gets fuzzy. All other sources such as Bluetooth and Aux work fine, but closing the door makes the radio reception diminish and become fuzzy. Does anybody have any idea why this happens?

your antenna is loose, pull radio and push it back in..