elements the alignment of the dit 50 inside the wellbore conduit 7 is made by the operator running the winch unit 105 at the surface or seabed both the et 9 and the wiu 1 are split into two separate and equal ea sections 11 a and 11 b and 92 a and 92 b as illustrated in fig4 and 5 the antennas are opposed to another when aligned in the wellbore one section 11 a 92 a marked u201c a u201d comprises a transmit antenna tx and the second section 11 b 92 b marked u201c b u201d comprises a rectenna rx or receive antenna more particularly the alignment of the unit or antennae is performed by tracking of an electronic phase locked loop that is part of the et 9 during a well intervention the et 9 is run in a continuous transmit mode this means that the transmit antenna 92 a of the et 9 induces an alternating electromagnetic field 100 at a particular frequency w which will be recognized by a matching pre programmed wiu 1 thus as the et 9 is aligned with the wiu 1 the transmit field 100 is picked up by the wiu 1 receiving antenna 11 b and if the received frequency matches its expectation it is evoked and will transmit a feedback signal using its transmit antenna 11 a in turn as the feedback is picked up by the et 9 rectenna 92 b the loop is closed as the feedback match and tracks the transmittal of the phase locked loop upon u201c track u201d meaning that the et 9 is opposed a u201c keyed u201d or addressed wiu 1 from which the address signal is recognized the et 9 transmits a pll acknowledgement 106 signal via the.