| 摘要 |
PCT No. PCT/SE94/00785 Sec. 371 Date Feb. 23, 1996 Sec. 102(e) Date Feb. 23, 1996 PCT Filed Aug. 25, 1994 PCT Pub. No. WO95/06360 PCT Pub. Date Mar. 2, 1995An apparatus for providing sound in vehicles which comprises a receiver for radio frequency waves with frequency selection and antenna. The apparatus includes a master unit located in the vehicle close to the driver's seat including loud-speakers. The apparatus also includes a slave unit which is located together with the antenna remotely from the master unit. The slave unit includes a circuit controlled from the master unit for selecting a desired frequency and converting the selected signal into an intermediate frequency. The master unit also includes a detector, a pre-amplifier and a power amplifier along with controls for adjusting the receiver. |
