Abstract: Base radios and communication apparatus (100) that include: a chassis (110); at least one power supply module (120) having a height that is substantially the height of a three rack unit chassis and having a width that is substantially one sixth the usable width of a nineteen inch rack; at least one fan kit module (130) having a first fan kit module dimension that is substantially the height of the power supply module and a second fan kit module dimension that is substantially five sixths the usable width of a nineteen inch rack; and at least one other module (140, 150) having a first module dimension that is substantially the second fan kit module dimension and having a corresponding second module dimension.

Abstract: A heat sink and component support assembly that includes a core structure (110). The core structure (110) includes: a central member (112) having first (114, 116) and second opposing sides; at least one heat dissipating surface (124, 126, 128) extending from at least one of the first opposing sides (114, 116); and first and second extension members (118, 120) positioned adjacent to each of the second opposing sides. The assembly may also include an airflow facilitating arrangement, such as a fan (184), positioned adjacent to the core structure (110) for further enhanced heat dissipating capabilities.

Abstract: An apparatus and method for releasable securement together of a transformer power supply assembly together which includes a stacked arrangement (20) of a first transformer core plate (28) positioned to overlie a circuit board (26), a second transformer core plate (24) positioned to underlie the first transformer core plate (28) and the circuit board (26) and a carrier member (22) positioned beneath the second transformer core plate (24), the first and second transformer core plates (28,24) contact one another through at least one opening positioned in the circuit board (26). The apparatus includes having a body positioned over the first transformer core plate (28) in which the body of the span member (32) extends over a surface of the first transformer core plate (28) and extends from a portion of a peripheral edge of the first transformer core plate (28) to another portion of the peripheral edge of the first transformer core plate (28).

Abstract: A power distribution assembly (100) that comprises at least two direct current power supplies (106, 107), at least three signal splitter modules (102-104), wherein each signal splitter modules comprises a signal splitter and a radio frequency amplifier, a centerplane board (110) coupled to the at least three signal splitter modules (102-104) and to the at least two direct current power supply modules(106, 107), wherein the centerplane board (110) provides a plurality of electrical paths among a plurality of modules contained in the power distribution assembly (100), and a chassis (101) to which the modules (102-104, 106, 107) and the centerplane board (110) are mounted, and has an overall volume of at most 0.009 cubic meters.

Abstract: A heat sink assembly (100) employs multiple heat sinks (401-403) that are juxtaposed to provide pneumatically coupled air flow pathways. At least one of the heat sinks (401) preferably includes an air circulator to force the air flow towards a periphery of the heat sink. A plurality of heat radiating surfaces provide pneumatic pathways (201) for the air flow, and at least two of the pneumatic pathways (201) are arranged substantially non-parallel. In this manner, the air is forced (i.e., when an air circulator is provided) radially from a center point of the heat sink (200) toward a periphery. Similarly, the air is directed (i.e., when an air circulator is not provided) toward a central locale from the periphery of the heat sink (300).