An activity center is disclosed that includes a first section and a second section. On the transmit side, a device includes a plurality of message sources and a smart router function executed by a processor within the device. Radiation parts are formed so that the width of the radiation parts becomes wider than that of the power-feeding part with respect to the longitudinal axis of the power-feeding part. In the preferred embodiment, the corrugated seals are coated to reduce wear, fretting, and galling and are used in conjunction with a transition duct thermally free aft frame and pivot bearing mounting system.