Abstract: Examples of the present disclosure relate to a device, method, and medium storing instructions for execution by a processor for testing state machine software. For example, a state machine software tester device, including a processor, a storage resource with instructions that, when executed on the processor, cause the processor to record a state transition. In an example of the device, the recording can be of a state transition of the component under test, where the state transition is recorded in the log file. In an example, the processor of the device can compare the log file to a number of stored state machine testing permutations. In an example device, the instructions may direct a processor to generate a component testing report for a state transition based on the compared log file and the stored state machine testing permutations.

Abstract: A method of validating a signal received by a radio from a radio station includes determining a strength of the signal as received by the radio, ascertaining a frequency of the signal, and calculating a first distance between the radio and the radio station dependent upon the strength of the signal as received by the radio. A location and a broadcast range of the radio station are found in a database based on the frequency of the signal, A second distance between the radio and the radio station is computed based on a known location of the radio and the location of the radio station as found in the database. The radio station is validated only if the first distance and the second distance are within a margin of error and if the second distance is within the broadcast range of the radio station.