Old CRT TVs are massive noise sources, but this is quite exceptional!
I have at least one neighbour who cranks up a CRT TV, because it produces a bright spectral line at 16.625 kHz, on my VLF receiver.
This is the line scan frequency of a 625-line PAL TV, which also doubles up as the source of the Extra High Tension (EHT) 25kV for the CRT.
This EHT is massively noisy, and can be detected by nothing more than a pack of sammitches in a TV detector van.
Presumably, they have a DVB-T - SCART box or similar in the mix, or the TV would be in the skip.