Researchers discovered that  the "ultra low frequencies" (ULF) that were being beamed into Medford, Oregon, came from a nearby military base.  When the researchers went to the base and met with its commanding officer, they were told the base know about the ULF, but his base was not responsible, the Russians were being allowed to beam Medford with the frequencies.  

Additional ULF was also coming into the homes of the populace through their television antennas, which created some sort of standing-wave resonance within the structure of the home itself.  These people were severely depressed even if they did not watch TV.