The second harmonic of your 48.38 crystal oscillator is at 96.76MHz which is in the middle of the FM band. The third harmonic at 145.14MHz is probably much stronger and might be a TV, police or fire department radio frequency.
A cheap radio doesn't have a tuned circuit at its input so its input gets overloaded by a single strong frequency. A good radio would not have a problem except for trying to receive weak signals near the frequency of the interfering frequency.
You are probably causing interference to many people's radios and TVs so stop kidding around.