Update on my station settings with GPS
The following produced consistent results with NTP.conf and now able to use Sbitx FT8 in the field
#PPS Kernel mode
server 127.127.22.0 minpoll 4 maxpoll 4 true
fudge 127.127.22.0 flag3 1 refid PPS
# GPS Serial data Reference
server 127.127.28.0 minpoll 4 maxpoll 4 iburst prefer
fudge 127.127.28.0 flag1 1 time1 0.500 refid GPS stratum 1
# Shared Memory 2 source
server 127.127.28.2 minpoll 4 maxpoll 4
fudge 127.127.28.2 flag1 1 refid SHM2
# Fix False tickers
tos mindist 0.5
Works here.? Hope it is of use.
73's
Michael