Unfortunately these are not available anymore:
https://groupdiy.com/threads/fs-pcbs-for-tg1-zener-limiter-not-available-anymore.65505/
Does anybody have two PCBs left he wants to sell?
https://groupdiy.com/threads/fs-pcbs-for-tg1-zener-limiter-not-available-anymore.65505/
Does anybody have two PCBs left he wants to sell?