A communication device locates a preferable wireless service provider in a multi-service provider environment using a frequency or frequency band search schedule. The shoulder attachment system includes a first and second shoulder strap individually coupled to the external surface of the enclosure member. The first thickness da, the compressive strain a, the second thickness db, the tensile strain b, the third thickness dr, and the intermediate strain r satisfy a relationship, 0Nadabdb2Nrdr0. An engine mount bracket secures the cylinder block structure to an external position and provides additional rigidity. This fixed pattern can be chosen as desired and can be, e.