This part concerns me as RFI is the biggest downside for broadband end-users.
[1] This spectrum overlaps with the FM broadcast band between 87.5 and 108 MHz, as well as various military and government radio services. To limit interference to those radio services, the ITU-T G.9700 recommendation, also called G.fast-psd, specifies a set of tools to shape the power spectral density of the transmit signal;[8] G.9701, codenamed G.fast-phy, is the G.fast physical layer specification.[6][15] To enable co-existence with ADSL2 and the various VDSL2 profiles, the start frequency can be set to 2.2, 8.5, 17.664, or 30 MHz, respectively.[1]