Abstract: A method (200) of assembling a mobile communications unit (120). The method (200) includes the steps of producing (212) a universal base component (118) at an assembly facility (110) and shipping (214) the universal base component (118) to a separate facility in which the separate facility contains a selection of user interfaces (122). The user interfaces (122) are used to initiate a feature in the mobile communications unit (120), and the selection of user interfaces (122) includes user interfaces (122) associated with different customers (114). The method (200) also includes selecting (216) a user interface (122) from the selection of user interfaces (122) and incorporating (218) the selected user interface (122) into the universal base component (118) at the separate facility.

Abstract: A mounting apparatus for securing a mobile radio includes a mounting tray (102) having a flat surface (104), radio housing attachment wings (106) and a pair of radio receiving portions (108). The flat surface has recessed fastening locations (110) for attaching the mounting tray to a surface using screws or bolts. A rubber pad (114) is affixed to the inside of each attachment wing (106) such that an opening (115) in the pad is aligned with an opening (112) in the attachment wing. The radio receiving portions (108) each have a cut-out (109) for receiving the rear of the mobile radio. A high tensile strength spring (118) is riveted (130) to the flat surface (104) of the tray and has an L-shaped end (122) prevents the spring from deforming if an unexpectedly large force is applied to the top of the radio. Together, these features act to dampen any vibrations, etc. which could damage internal radio circuitry.

Abstract: The PTT assembly (100) self locates and then locks a back support plate (106) and switches (146, 148) directly to an inner surface (134) of a housing wall (132). On the outer surface (136) of the housing wall (132), keypad plungers (116) self locate through holes (140) in the housing wall. The perimeter of the keypad itself is retained by a bezel (110) that snaps into the housing (132). A hook (130) extends from the bezel (110) to lock and fix the travel distance of the plungers (116) to the switches (146, 148). With the back support plate (106) firmly in place, the keypad actuation force remains consistent since the travel distance of the plungers (116) to the switches (146, 148) is fixed by the hook (130) length. Additionally, the back support plate (106) supports the switches without bowing under the applied plunger force further ensuring a consistent actuation force.