Okay, I was curious. I am about 1000 miles from the CHU transmitter site.
There are couple of intermittent utes or similar on frequency, but sure enough, the time interval pips are there as well as I type this reply. I have listened long enough to hear multiple minute interval beeps, too.
Not even using a SDR here. Just my Kenwood R-2000 and the 31' vertical at the moment.