A method of launching space vehicles by towing them aloft, then twirling them around a large transport aircraft at the center of a formation of other tow aircraft and other devices of the invention. During the absence of an error the original bitstream may be outputted and during an error the regenerated bitstream, which is obtained from a \u03a3\u0394-modulator, which is bit-synchronized to the original bitstream. Both ends of crystal element are connected to the non-grounded ends of the first and second capacitors, respectively.