智慧职教: The working frequency band for a LES in Inmarsat system is_______band.
举一反三
- frequency band
- 智慧职教: Who transmits and receives signal to and from the satellite using L band frequency?
- The DME frequency band is: A: UHF B: VHF C: FM D: HF
- In a data communication system, the transport media with the widest frequency band and best reliability is the( ). A: radio channel B: coaxial cable C: twisted--pair cable D: fiber optic cable
- The narrower the frequency band of sound source, the better its expressive force and the richer its levels.