@esarhaddon , that is not HAM or CB. You can tell it is packetized data and/or for packetized processing. The keeps are the demodulation of the envelope. I will see if I can extract the frequencies of the "beeps" as that may provide a better clue of the source. Some items have well defined packet frequencies.
@audphile1 , the change that is described by the op, appears to be a rapid change increase raising above the floor, then the change stops happening about 5 feet up. The floor is likely acting like a shield, but it could also be ground plane effects, or an inductive current loop.
@filipm Amazon has clamp on ferrite bead kits.
https://www.amazon.com/Tamicy-Pieces-Ferrite-Suppressor-Diameter/dp/B08BPHCXR3
Unfortunately it can be tough to get proper specifications of anything on Amazon. Different clamps work at different frequencies. Digikey will cost you more, but you know what you are getting. For $20 though, start with Amazon. Based on your comments about the output cables, put clamps on all wires input, output, and AC. Due to stray capacitance, every wire can act as an antenna.
@filipm , are you in a high-rise apartment building? The reason I ask is they often host large cell tower arrays on the roof as well as antennas for other radio types.