They were solidly on 11755 for 2-3 months over the summer.
In the spring, one night, they drifted between 11747 and 11758 in a span of 20-30 seconds over and over all night long. That was fixed the next day... but sometime this summer, they didnt drift back and forth but in one fell swoop ended up on 11755 and stayed there.. and just in the l;ast week or two, were back on 11750.
Wow, that's quite a bit...I guess the 1k isn't as tight as the other 10k's.
Its supposed to be 5kw i think, i saw a sign in a video outside their TX site that noted it.
See this picture in the studio:

9665, a few years ago slowly over time, drifted as far away as 9673
They supposedly got more powerful transmitters from another station in brazil, but i havent followed that situation closely