викличне реле
calling officer
calling party
Digital Selective Calling (DSC)
calling equipment
calling jack
automatic calling equipment
selective calling system, SELCAL system
calling signal
calling-up paper
command artillery radio relay company
command radio relay and cable company
communications relay
communications relay group (CRG)
optical relay
radio relay
radio relay facilities
radio relay station
relay
relay through
relay to…
tape relay
guided missile relay working group
laser relay unit (LRU)
orbiting laser beam relay unit
starter relay
relay transmitter
differential relay (integrated device)
frequency relay
line-of-sight radio-relay system
radio-relay communication
starter disengagement relay
line-of-sight microwave radio relay system