Abstract: A method and apparatus are provided for generating a control signal for compensating a temperature controlled crystal oscillator system for changes in an ambient temperature. The method includes the steps of providing a set of second-order coefficients relating ambient temperature to frequency drift over at least a portion of an operating temperature range of the temperature controlled crystal oscillator system and calculating a control signal for compensating the temperature controlled crystal oscillator system for the frequency drift due to the ambient temperature based upon the set of second-order coefficients.

Abstract: A conference call feature is offered for use with spread spectrum cordless communication systems. The conference call feature is achieved through the alternate use of redundant communication resources by units on the conference call. The redundant communication resources in spread spectrum communication systems transmit duplicate copies of messages in high noise environments. In residential environments, noise tends to be less of a problem and can, hence, be used to support a conference call feature.

Abstract: An apparatus simplifying the creation of right-angle optical paths between optical structures. The apparatus allows the input/output of optical signals from an optical wave-guide.

Abstract: Disclosed is a method of selecting a relatively high reliability signal path between a mobile communication unit and a number of possible base sites.

Abstract: A method of welding two dissimilar metals of substantially different melting temperatures by passing an electric current through an interface created by biasing a projection located on the higher melting point metal into intimate contact with a surface located on the lower melting point material. The electrical current substantially liquifies a portion of only the second metal so that the projection is not substantially deformed by the welding operation.

Abstract: A method of identifying a proximal base site of a number of base sites by a communication unit in a CDMA communication system having a number of communication resources. The communication unit identifies the proximal base site by detection and measurement of identification signals received from the base sites where each base site transmits an identification signal containing at least an ID on a communication resource defined by parameters stored within a resource table within a memory unit within the communication unit with such stored parameters including a code key, a bandwidth, and a frequency and wherein at least some resources may be frequency coextensive.The method includes the steps of selecting a resource from the resource table within the memory of the communication unit and detecting and decoding to produce an ID from a detected identification signal by the communication unit on the resource.

Abstract: A way of constructing modular RF power amplifiers. RF power amplifiers are constructed of a standardized chassis plus a number of RF power modules with each such power module containing provisions for self-cooling.