The TUA-T550HD HD Radio Tuner from Alpine Electronics of America, Inc. enables consumers to easily add HD Radio technology as a source to their Alpine head unit. Twelve head units in Alpine’s 2009 ...

Fig. 1: A simplified linear detector circuit of the Bose FM multiplex detector from the patent documents. Fig. 2: John Bose enjoys a hearty meal in the Alpine FM transmitter building in July, 1939.

Alpine, manufacturer of automotive mobile media stations, has announced that it has launched a brand new, innovative digital radio adapter called the EZi-DAB. The Alpine EZi-DAB is a professionally ...