[RFI] What technology is Ambient's X squared ?

[Doug Grant]

> This came from a recent press release from Ambient.......
>
> Ambient?s X? has been certified by the FCC to be fully compliant with
> FCC rules and requirements for Access BPL equipment.
>
> What frequency spectrum are they using for this ?

Looks like HF/low VHF (2-30 and 30-35 MHz). Appears to have notches in ham 
bands. Not clear if the notches are deep enough or if it is still loud in a 
modern HF receiver.

FCC test report at:

https://gullfoss2.fcc.gov/prod/oet/forms/blobs/retrieve.cgi?attachment_id=681552&native_or_pdf=pdf

73,

Doug K1DG