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frequency family stresses
media.	группа частот, выделенных определённой географической зоне
English thesaurus
frequency family
avia., Canada	A family of frequencies in the aeronautical mobile R service that contains two or more frequencies selected from different aeronautical mobile R bands and that is intended to permit communications at any time within the authorized area of use between aircraft stations and appropriate aeronautical stations

frequency family: 1 phrase in 1 subject

Aviation

1