Three zhangs. However, at ramah have traced.Thereafter, ilan ramah aliases Jones. She element, to plunge into the communications technology research. Once, she ShenDu musicians from a fellowship get inspiration. Then, using the principle of automatic piano, she invented "frequency hopping" technology! August 1942, the invention patent right is granted. At first, "frequency hopping" technology is only used to guide the
Torpedo. Until 1985, qualcomm company based on the technology theory, developed CDMA wireless digital communication system. Then, appeared the prototype of the cell phone phone. Since then, the mankind entered a wireless communications. But all this to Heidi · ramah.In 2000, at the age of 86, Heidi ramah and died. The electronic frontier foundation awarded the honorary technology MEDALS, Boeing