A hybrid drill bit having at least two rolling cutters, each rotatable around an axis of rotation, at least one of the rolling cutters having a high pin angle, and at least one fixed blade. 1311 regulatory requirement for redundant backup instruments in the cockpit. Helical proximate and distal portions are connected to the load such that the overall antenna structure has a VHF resonance. The second layer is present either directly or indirectly on top of said first layer. The slideable element is slideably received in the second recess.