Big thanks to Vileer and Rex, I now have a working GPS with PPS → Chrony to give me an accurate time clock for digital ham modes for SOTA & POTA
Followed the newer version of the PPS reference: Revisiting Microsecond Accurate NTP for Raspberry Pi with GPS PPS in 2025 - Austin's Nerdy Things
Only real gotcha was changing the GPIO pin from 18 → 6 in config.txt