A disk drive device is provided with a recording disk, a base member, a bearing unit, and a hub member. The negotiation comprises at least defining a port of the device for said related connection. Mobile nodes can use a single RF chain with a controllable RF filter to receive and process a signal within a first selected carrier band including components from different transmitters, e. A user of the broadcast reception recorders receives the meta-data registered by the other user from the server through the network, and reproduces the broadcast content on the basis of the meta-data. The core material is passed under pressure through the membrane into a moving or turbulent receiving solution forming uniform droplets of core material dispersed in the receiving solution.