Abstract: Systems and methods automatically compensate for long-term drift of frequency standards or references used by transmitting and receiver terminals to avoid manual adjustment of the terminals to bring them back within operating tolerances and minimize communications outages caused by inability of the system to otherwise accommodate for such drift. The present invention may provide automatic band selection to maintain a modulated carrier within an operating range of an automatic frequency control or tracking capability of a communication device. This may be accomplished by selecting an appropriate reference signal used to control a center frequency of an automatic frequency control circuit (such as a PLL) or used to convert the carrier frequency of the modulated carrier to fall within the operating range of the automatic frequency control circuit and/or by causing the transmitting station to at least partially correct the frequency discrepancy.

Abstract: A system and method for testing a radio network. A user at a central site may choose specific radios to be tested and specific test parameters for each one. The user may specify start and stop times, sample rates, whether one or multiple links are to be simultaneously tested, whether results should be presented as snap shots, statistical tables/graphs/charts, or as correlated data from multiple links. Distributed testing is permitted, in which the operational characteristics of one radio are varied, and another radio is monitored for a corresponding change. Once data has been gathered from one or more tests on one or more links, the data may be returned to the central site for analysis and presentation to the user in the selected format.