This project was put on hold over the holidays. It's always a busy time, plus the club doesn't hold meets over summer.
But I have just completed another 10 units. More of the same, but thought you guys might enjoy some more photos.
I couldn't get the same batteries as the last batch, which were 650mAh, these have much smaller 220mAh. But this still provides about 4 hours of run time.
The uBlox GPS modules are a huge improvement. Even without the SAW filter in the RF path and the sub-optimal PCB size compared to the antenna. These find more GPS satellites faster than the G.top modules, plus they also use glonass which doubles the visible satellites.