Thanks for the tip on the Quectel L80! Looks like a great system and with similar functionality, but love that it is a single PCB mount package. I just ordered a few to play with. The backup mode is also cool and only needs 7uA:
In backup mode, L80 module stops to acquire and track satellites. UART is not accessible. But the
backed-up memory in RTC domain which contains all the necessary GPS information for quick start-up
and a small amount of user configuration variables is alive. Due to the backed-up memory, EASY
technology is available. The typical consumption in backup mode can be as low as 7uA.
