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02:17, 6 June 2015 Disambiguation
* Frequency Agile Ham Radio - A Part 97 radio modified to operate outside the HAM radio frequency allocation or non-compliant 2-way radio.
* Frequency Hopping Spread Spectrum (FHSS) - also sometimes called Frequency Agile by means of Frequency-hopping or spread spectrum operation.
* RADAR Frequency agility - a RADAR (RAdio Detection And Ranging) system able to utilize frequency shifts to enhance operation.
* Frequency Agile RF Units - a commercial radio technology that can be reconfigured between different bands and different air interface protocols. Also used in WiFi.