A. Most full-duplex radios are digitized. The voice is converted into digital signal and being processed. So is Yapalong. The processing capability of large data determines the performance of a full-duplex radio: range, sound quality, and group size. To improve sound quality and increase group size, we need larger data transmission. On the other hand larger data transmission shortens range. For the past decade, Nautic Devices Inc. has developed Yapalong IP technology that can compress large data greatly. With this compression capability, the best performance is achieved in all 3 major features: range, sound quality and group size.