well, it sounds like someone left their chicken nuggets in the microwave on FM, completely UNID to me idk what it is, seems to be a real signal and not RFI.
Audio 1: FMFrequency Modulation mode Audio 2: AMSYNC mode Audio 3: USBUpper Side Band Modulation (Radio, referring to reception and modulation mode)Universal Serial Bus (Computer, referring to USB Ports and cables) mode (6.46 kHzKiloHertz (kHz) 10^3 Hz Bandwidth) Audio 4: AMAmplitude Modulation mode