Review on Gowoops GPS Module with Active Antenna: Perfect for Arduino STM32 51 Single Chip Microcomputer by Ted Boone

Works perfectly. Connects to RPi 3 with homemade 4 pin cable. I also released PPS for my project. By default, PPS is disabled until GPS is blocked. This is configurable. I'm not sure if I should swap the serial ports. As far as I can tell, the mini-UART just works with Jessie's upgrade. If not, there are many websites that discuss this issue and how to fix it (GPU Clock Speed Fix). Replacing the serial ports also works.