FIELD: coupling devices for transmission of blast initiation signals, in particular, coupling device for confinement of detonator located at the end of the donor line for radiation of initiation signal into transmitting signal of coupling with the acceptor line for reception of this signal. SUBSTANCE: coupling device for setting the detonator to signal transmitting coupling to signal confinement line takes up the detonator in the sleeve line. The line catching element is coupled to the sleeve element and interacts with the sleeve element with formation of the contour of slot between them, where the signal receiving line is located. The slot dimensions and shape are made so as to impact a wavy shape to the signal receiving line. The coupling device may be used individually or in combination with a tail coupler so as to secure the donor line in the signal transmitting line to the detonator input wire. EFFECT: enhanced reliability of initiation signal transmission. 8 cl, 16 dwg
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