Abstract: Method and apparatus for locating an intruding radio frequency signal in a wireless network. Relative distance measurements are computed between pairs of receivers from a plurality of receivers to the source of the intruding signal based on received signal strength. Loci of possible locations are plotted, points of intersection are determined, and a clustering algorithm is applied, yielding the location of the source of the intruding signal. The invention is distinguished in that its operation does not require knowledge of either the transmitted power or antenna gain of the intruding signal source.

Abstract: A device for testing the digital waveforms in a special purpose multi-channel transceiver system designed to operate in a tactical environment. As selected waveforms are presented to the test device, they are randomized over a fixed time period creating a unique signature for comparison with a prestored signature at the end of the period. Uniquely assigned light emitting diodes identify which, if any, of the sequentially examined waveforms are incorrect. Provisions are included for latching the light emitting diodes in their illuminated state in order to detect non-recurrent fault conditions.