

Indeed, most ATC frequencies have just one antenna, as a controller has noted in the comments. Controllers and pilots usually don't have much trouble hearing each other unless there are multiple stations transmitting on the same frequency at once or there's something like a mountain in the way (or possibly a building in the case of airplanes on the ground.)Ī couple of other answers have hit on the problem here a bit, but the reason isn't that ATC has multiple transmitters and receivers. Short version: Poor quality audio on LiveATC is mostly due to obstructions attenuating the signal. But in general what you hear on LiveATC is much worse than what the controllers are hearing. Of course, sometimes the radio from an aircraft is just terrible thanks to poor equipment or excessive cockpit noise. When I'm flying in these areas, I can hear ATC clear as day but can't make out the aircraft they're talking to because they are hundreds of miles from me, and my aircraft receiver can't see them. Sometimes one ATC frequency covers a massive part of the world. This means that no matter where the aircraft is, it will be within line-of-sight to one of them (except for in remote and oceanic areas, where HF radio or data-link is used). Therefore, if the person's house cannot see the aircraft (which given the sheer distances involved is common), the audio received will be of poor quality, with lots of static, and sometimes even unreadable.īut real ATC doesn't use just one receiver - there is a whole network of receivers and transmitters, in strategically placed locations. VHF radio waves can only travel in line-of-sight. Aircraft use VHF radio (except in remote and oceanic areas). LiveATC works by an individual volunteering to host a receiver on their house. To see if you may be affected, select your departure airport and check "Delays by Destination".Įarlier reports claimed a fire at Potomac Consolidated Terminal RADAR Approach Control (TRACON) impacted air traffic, but an FAA representative told FOX 5 there was no fire.The real quality is almost always better, and I'll give a simplified explanation for why. Due to EQUIPMENT / OCL: EQUIPMENT, there is a Traffic Management Program in effect for traffic arriving Ronald Reagan Washington National Airport, Washington, DC (DCA).Due to EQUIPMENT / OCL: EQUIPMENT, departure traffic destined to Richmond International Airport, Richmond, VA (RIC) will not be allowed to depart until at or after 7:00 pm EDT.

Due to EQUIPMENT / OCL: EQUIPMENT, departure traffic destined to Washington Dulles International Airport, Washington, DC (IAD) will not be allowed to depart until at or after 6:00 pm EDT.Due to EQUIPMENT / OCL: EQUIPMENT, departure traffic destined to Baltimore-Washington International Airport, Baltimore, MD (BWI) will not be allowed to depart until at or after 7:00 pm EDT.According to the FAA, air traffic was impacted due to a fire at Potomac Consolidated Terminal RADAR Approach Control (TRACON).
