A complex filter includes an I channel having a first I channel output and a second I channel output and a Q channel having a first Q channel output and a second Q channel output. The radio communication device receives communications on a primary channel and at least one non-primary channel. The valve guide member is coupled with the valve casing through a coupling mechanism which permits to turn the valve assembly unit on and relative to the manipulating head. Liquid is provided in the spacing between the internal wall of the elastomeric portion and the external wall of the stub portion to damp such movement. Since a VM as used by the invention has full knowledge of the semantics of application-level code, fault tolerance mechanisms can be provided by the VMs without requiring any increase in application complexity.