Gas generant filter assemblies and related combinations, including airbag inflator devices, are provided which assemblies include a tubular wall portion with a sleeve member and a central opening adapted to at least in part contain a supply of gas generant material reactable to produce reaction products including a quantity of gas. The media path configuration enables all the media feed trays to be located in one place, relative to the marking engines. The second-type wireless transceiver apparatus is configured to allocate resources according to the first-type signaling, and indicate the resource allocation by sending the second-type signaling to the first-type wireless transceiver apparatus. Preferably, the first upper retardation film is a quarter-wave plate.