A shared beamformer flexibly allocates beams among clusters of beams produced by phased array antenna apertures that are deployed on a satellite. In the operating area determination method, a plurality of depth maps of a target scene is generated at several time points. In one embodiment, a cross-pinning guide device is provided that can be configured to angularly position the cross-pin hole relative to the bone tunnel to allow the cross-pin hole to intersect the bone tunnel without passing through another side, e. The reaction medium is supplied to the reaction chamber through a supply passage formed in the container.