[time-nuts] Furuno GT-77 pinouts

[Mark C. Stephens]

I searched far and wide and eventually found the pin-outs for the Furuno GT-77 GPS timing module.

I believe the 16 Satellite, GT-80 timing GPS modules are the same pin-out.
Pin1 is the closest pin to the antenna socket.

1. TXD
2. RXD
3. Ground
4. +5v
5. not specified.
6. 1PPS
7. Battery Backup Power
8. NC
9. NC

-mark
Vk2hmc