radio-relay communication

satellite relay communication

delayed-relay communication satellite

command artillery radio relay company

command radio relay and cable company

radio relay

radio relay facilities

radio relay station

line-of-sight radio-relay system

line-of-sight microwave radio relay system

line-of-sight radio relay link

aerial radio relay

radio relay drone

tactical communications radio relay drone

radio relay and field cable interconnection point

radio relay cable network

radio relay operator

radio relay set

radio relay switching central

radio-relay and carrier operator

radio-relay battalion

radio-relay extension line

radio-relay station

radio-relay system

radio-link communication

establish radio contact / communication

orbital-scatter radio communication

orbiting-dipole radio communication

radio communication

radio and communication school

single-sideband voice radio communication

radio communication diagram

radio communication plan