elective lesson 00
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11 Terms
ELF
subamrine communication, geophysical studies. can penetrate sea water to some extent
SLF
subamrine communication, geophysical monitoring with very long wavelength and extremely low data rates
VLF
navigation time signals. excellent in long distance propagation
MF
AM broadcasting important historically
HF
very important in aerospace because ionosphere reflection can provide beyond line of site
VHF
extremely important in aviation commonly used for aircraft to ground voice communication
UHF
important for satellite links and navigation radar
shf
very important for aerospace for radar satellite communication and high data rate links
EHF
use for advance radar high bandwidth satellite system