The GOOZEEZOO ATS-20+ Radio boasts a versatile frequency range with sound bandwidth filters set at 0.5, 1, 1.2, 2.2, 3, and 4 kHz, accommodating an extensive array of 22 pre-configured channels spanning both commercial and amateur radio frequencies.High Quality Sound: The shortwave ham radio comes with a high-quality front speaker that produces excellent audio, providing you with an listening experiencePlay it Anywhere: The sw radio receiver is a highly portable device that can be taken anywhere for various needs, thanks to its compact dimensions of 3.6 * 3.2 * 1.5 inch. Support a 3.5 mm stereo earphone jack for private listening (stereo earphones not included). And the handheld radio shell is made of aluminum alloy, which makes it strong and wear-resistant, ensuring its durability and longevity over timeExcellent Reception: With the high sensitivity radio, users can enjoy stable performance and reception across all bands, providing more choices of radio channels to listen to. The Si4732 chip is known for its high sensitivity and selectivity, which ensures that the multi band ham radio receiver can pick up signals from even the weakest of stations without noiseTechnology: Digital Signal Processing (DSP) technology can be used to enhance the selectivity, signal-to-noise ratio, and anti-interference ability of radio signals. For those who primarily listen to FM channels, using a ham radio receiver with DSP technology can provide significant benefits. The PCB retains the SI4735 package, can replace the chip by yourselves, and the software is compatibleOur equipment includes an FM band antenna. Listening to various frequency bands requires the use of specific antennas