Abstract: A housing for an electronic circuit board includes a housing member and identical top and bottom cover members. Inwardly extending ribs located on the interior sidewalls of the housing member align and support the circuit board, and provide convection cooling channels which allow air to circulate freely over the circuit board. The housing member is preferably an integrally cast member formed with integral fin surfaces which dissipate heat for the protection of temperature sensitive electronic components within the housing.

Abstract: A swivel base assembly for mounting radio apparatus or the like on a supporting surface includes a first support element for engaging the apparatus housing and a second support element for engaging the supporting surface. A spacing element in the form of a sphere allows relative movement between the support elements while maintaining a fixed minimum spacing. Locking means in the form of interlocking hook members draw the mounting plates into engagement with the spacer element to fixedly position the first plate with respect to the second plate and the supporting surface.

Abstract: A battery charger system for supplying charging current to either a battery-powered transceiver or to the rechargeable battery pack of the transceiver includes a housing housing a receptacle for receiving the transceiver. Upon insertion of the transceiver into the receptacle an electric contact projecting from the bottom wall of the receptacle contacts the transceiver to establish electrical communication between the device and charging circuitry within the housing. When supplying charging current to the battery pack an adapter having a smaller receptacle is inserted into the receptacle to establish electrical communication between the contacts and the battery pack. A reciprocatively mounted actuator stem in the adapter housing enables actuation of a deep-discharge mode select switch through an aperture in the bottom wall of the receptacle.

Abstract: A housing for a battery operated portable transceiver includes an elongated generally rectangular housing. A battery pack received in a recess in the housing forms in part a surface for gripping the housing. A combined latch and contact arrangement retains the battery pack in position and establishes electrical contact between the battery pack and the transceiver. A protective boot fitted to the lower end of the housing protects the transceiver from physical shock.

Abstract: A belt holder for portable radio apparatus and the like includes a belt fastener and a receptacle housing. The receptacle housing is pivotally mounted to the belt fastener. A clamp mechanism includes a sliding clamp body having two projecting clamp arms which engage the radio apparatus to prevent the apparatus from falling from the receptacle housing. A cam mechanism, operated with rotation of the receptacle housing with respect to the belt fastener, actuates the clamp mechanism to disengage the radio apparatus from the belt holder.

Abstract: An improved mounting arrangement and method of assembly provides for mounting parts on both chassis and board, then mating the two before soldering by means of a twist-tab-and-slot arrangement. The conformation and dimensions of the tab and slot prevent warpage during soldering, enabling the use of the chassis as a board carrier in the wave soldering process.