Systems and methods for providing an efficient mechanism for transmitting encoded downlink assignment index and for signaling the ACKNAK information corresponding to downlink grant allocations in an over the air radio telecommunications network with time division duplex capability, where aggregation of component carriers is used. The invention further relates to an audioantenna module manufactured according to the above-mentioned method. The input element can be provided with a sleeve which surrounds a snout at one axial end of the crankshaft. The top chimney also includes a resilient seal to releasably hold the top of the preform.