Along with LIXO on 6918.4 I am hearing another CW beacon. This one sends a longer message. It is weak, so I do not yet have a good copy of the text. Some possibilities along with the Google translations (assuming Portuguese, a good bet), maybe someone else has better copy? Unfortunately one letter changes the meaning quite a bit.
"esti fo eigot o" - it's fine
"esti fo esgot o" - sewage style
"esti fo esri o" - you’re serious