A team of two secure communications personnel fluent in German are to monitor SCP-1142 at all times. In case of verified contact,
Since the thing only it has a receiver, it would make more sense for the signal to be recorded automatically, and for someone fluent in German to check daily to see if anything was recorded. And "contact" implies two-way communication, which can't be done with just a receiver.
If, on the other hand, the SCP was a receiver and a transmitter, but all attempts to speak to SCP-1142-1 have failed so far, it would make sense to keep a German speaker around at all hours of the day, since the next time they receive a transmission they'll want to try talking back again, in case the next time talking back works.
Analysis of transmissions recorded by authorized personnel have yielded several critical points of divergence from our timeline.
I don't think "authorized" is needed here.