A multi-layer peer-to-peer capability is provided. An input signal wiring pattern electrically connects external connection terminals with the pads in a first pad array and a second pad array. A second coupling path has a filter device, a buffer circuit and a second impedance element connected in series, and connects the feedback input to the signal output or to the signal input. The piston element includes resiliently deformable fingers which act to secure the piston element to the actuator assembly for sliding movement therewith. The techniques may be employed for forward andor reverse links in CDMA systems. The system includes a plurality of UVC lamps arranged in a table top sized housing and having a UVC transmissive shelf in the housing for support of objects to be decontaminated.