CPC Subgroup
H04B 7/15 Active relay systems
Full Title
Radio transmission systems, i.e. using radiation field (H04B10/00, H04B15/00 take precedence) > Relay systems > Active relay systems
3 direct subcodes
Child Classifications
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- H04B 7/155 Ground-based stations (H04B7/204 takes precedence)
- H04B 7/185 Space-based or airborne stations; (H04B7/204 takes precedence)
- H04B 7/204 Multiple access