the 13" worked fine for me for years with the original HU, but not aftermarket. The antenna x 24" am/fm/cb had good reviews but it appears discontinued. QT currently has a 24" am/fm/cb with great reviews and has a quick disconnect but it's pricey. With a shorter antenna you will always be compromising signal strength. I see a lot of 50 cal bullet antennas for sale but I don't think they would be useful for someone that listens to FM. I'm going to stick the stock one on temporary to see if it's the antenna or not.
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