It's cheap, small, and low-power. It's not a metrology standard like the 5071A. Something like this might be used as a more stable reference oscillator for a ra

It's cheap, small, and low-power. It's not a metrology standard like the 5071A. Something like this might be used as a more stable reference oscillator for a radio transceiver. Cell towers typically use rubidium frequency standards, this would likely be part of a package to replace those. They'll also likely show up in high-end test equipment (oscilloscopes, spectrum analyzers, etc). Note that this thing doesn't provide date and time. It provides a 10MHz square wave output and a 1 pulse per second output. You could use it to make a real time clock, but that's not the intended purpose.