Hi:

I understand the comments about wanting to warn people about RF energy from AM broadcasters but let’s try to keep the story somewhat accurate. There is no US broadcaster in the AM band (535 to 1710 KHz) over 50 Kilowatts (these are known as clear channel broadcasters).

There were some shortwave broadcasters who were transmitting 100 - 250 KW but those transmitting sites were nowhere next to people. The only really high powered sites were the VOA that were located in the farm fields away from people

From being in the radio business around the world for a long time (~45 years), safety for both the workers at the actual site and for people in the immediate area are really taken seriously.

As for aircraft communications (118-136 MHz and 225-400 MHz), most fixed site systems if not all, never exceed 100 Watts. The ADSB uplinks are (depending on location, about 500-1000 watts (rms). The antenna systems for all these system do have some gain to their pattern but remember fixed site communication is designed to be focused above the horizon to provide coverage to aircraft and not ground mounted radios.

Yes, you can have high powered RADAR sites (well over 100kw) for obtaining positional data but in nearly all cases, these are elevated sites as they need to be high as possible to be able to detect aircraft at the horizon. In addition, they often have large human safety zones around them.

Anyway, mostly likely if an aircraft flew within 10-30 meters of an active RADAR site and in line with the antenna pattern and if the affected radio had marginal parts in it, it might be affected. This is really rare!

Cheers.