A hydraulically striking device having a cylinder body, the cylinder body forming a cylinder therein, a piston in the cylinder body, configured to move by means of a hydraulic fluid so as to reciprocate between a first and a second position in the cylinder. This process includes the reaction of -2-hydroxy-2,5,5,8a-tetramethyldecahydronaphthalen-1-ylacetic acid, or an alkaline salt thereof, with an enantiomer of the 2–1-phenyl-1-propanol, or an ammonium salt thereof respectively, which is used as resolving agent. In directions toward the insulators separating the discharge electrodes there are disc-shaped buffered gas heat pipes that prevent metal vapor from condensing on these insulators. Feher’s BPSK is an improved efficiency transmitter which is compatible with conventional BPSK receivers. The low-level impulse signal can be generated digitally.