Letter Re: Monitored Frequencies
Hugh, Mr. TV asked if government agencies monitored some frequencies 24/7. I am an Army Aviator and can tell you that 121.5 VHF is monitored by every aircraft in the U.S. (not just military). The VHF radios in aircraft are designed to automatically receive 121.5, and it will broadcast into the ears of the pilot regardless of currently tuned frequency. Example: I have a tower freq tuned (119.325) and if someone broadcasts over 121.5, I will hear it, but in order to respond, I would have to tune my own radio to 121.5. The same is true for aircraft with …