Radio detector

A method comprising:

• determining whether one or more of a first plurality of frequency ranges is occupied, wherein each of the first plurality of frequency ranges has at least one of a first set of one or more bandwidths;
• determining whether one or more of a second plurality of frequency ranges is occupied, wherein each of the second plurality of frequency ranges has at least one of a second set of one or more bandwidths, and wherein a smallest bandwidth amongst the second set of bandwidths is larger than a largest bandwidth amongst the first set of bandwidths;
• and
• triggering an active module in the event that one or more of the first plurality of frequency ranges is determined to be occupied and none of said second plurality of frequency ranges is determined to be occupied, wherein the active module comprises a radio detector for detecting a target waveform.

A non-transitory computer readable medium comprising program instructions that, when executed by an apparatus, cause the apparatus to perform at least the following:

• determining whether one or more of a first plurality of frequency ranges is occupied, wherein each of the first plurality of frequency ranges has at least one of a first set of one or more bandwidths;
• determining whether one or more of a second plurality of frequency ranges is occupied, wherein each of the second plurality of frequency ranges has at least one of a second set of one or more bandwidths, and wherein a smallest bandwidth amongst the second set of bandwidths is larger than a largest bandwidth amongst the first set of bandwidths;
• and
• triggering an active module in the event that one or more of the first plurality of frequency ranges is determined to be occupied and none of said second plurality of frequency ranges is determined to be occupied, wherein the active module comprises a radio detector for detecting a target waveform.