Monitoring spectrum requires expensive instruments with a steep learning curve. However, a recently available, affordable and easy-to-use device analyzes the frequency band between 240 MHz and 960 MHz, which encompasses the higher part of the TV band.
Details of this open hardware based RF Explorer Spectrum Analyzer for the upper TV band are at:
Figure 6 shows the RF Explorer for the 2.4 GHz band testing an antenna built by participants of the 2012 ICTP Wireless training workshop in Trieste, Italy.
This low cost instrument paves the way for a wide involvement of people in the measurement of the real spectrum usage on their own country which hopefully can lead to a better spectrum management.