, video surveillance footage captured by a camera 118 or 106; a bypass module 436 for detecting whether radios 440 are transmitting signals via respective antennas coupled to the radios 440 and to accordingly couple radios 440 to their respective antennas either via a bypass line or an amplifier e. g. , a low noise amplifier; and a transmission access module 438 for granting or denying transmission access to one or more radios 440 e. g. , based on detected control signals and transmission requests. Each of the above identified elements may be stored in one or more of the previously mentioned memory devices, and corresponds to a set of instructions for performing a function described above. The above identified modules or programs i. e. , sets of instructions need not be implemented as separate software programs, procedures, or modules, and thus various subsets of these modules may be combined or otherwise rearranged in various implementations. In some implementations, the memory 306, optionally, stores a subset of the modules and data structures identified above. Furthermore, the memory 306, optionally, stores additional modules and data structures not described above.