The present invention provides T cell receptors having the property of binding to SLLMWITQC-HLA-A*0201, the SLLMWITQC peptide being derived from the NY-ESO-1 protein which is expressed by a range of tumour cells. At a gas station inside a service area of the satellite, a base station to receive the contents from the satellite is disposed. Accordingly, the time that elapses before it becomes possible to detect a rotation angle can be shortened correspondingly. The substrate may be an aircraft surface. As one example, the techniques may be applied to load balance Point-to-Point subscriber sessions across L2TP Network Servers. Furthermore the rotational speed of the rollers is controlled depending on their rotary position.