diff --git a/chrony.conf_GPS-Server b/chrony.conf_GPS-Server
new file mode 100644
index 0000000..cf55abe
--- /dev/null
+++ b/chrony.conf_GPS-Server
@@ -0,0 +1,20 @@
+server ptbtime1.ptb.de
+server ptbtime2.ptb.de
+server ptbtime3.ptb.de
+
+initstepslew 30 ptbtime1.ptb.de ptbtime2.ptb.de ptbtime3.ptb.de
+
+refclock SHM 0 offset 0.5 delay 0.2 refid NMEA
+
+
+logchange 0.5
+local stratum 10
+logdir /var/log/chrony
+
+keyfile /etc/chrony/chrony.keys
+commandkey 10
+
+dumpdir /var/log/chrony
+driftfile /var/log/chrony/chrony.drift
+
+allow all