Sigh. I was gonna work AO-51 this morning, but couldn’t hear the downlink. I shifted to the digital downlink frequency, and could hear it was active. It appears the satellite is temporarily off line. From the amsat-bb mailing list:

AO-51 stopped transmitting and went into Boot Loader mode. The command team has reset the satellite and have the digital downlink up and running.

We will reload the satellite as quickly as possible.

73,
Gould, WA4SXM
AO-51 Command Team

Best of luck getting it back online, lads!