Federal Scanning If you are interested in monitoring active frequencies in use by Federal Agencies in the US, my friend Chris' website had all the information you are looking for. Chris has made it his mission to log as many federal frequencies as he possibly can as he travels across the United States, and posts his updates to his blog. Chris has also been contributing to publications like "Monitoring Times" and "The Spectrum Monitor". You can check out Chris' website at thefedfiles.com #scanner