Strange spots from DB0ZDF

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R3LW
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Last seen: 1 month 5 days ago
Joined: 2008/07/18 - 21:10
Strange spots from DB0ZDF

Last time I am see strange spots on WSPRNET.ORG from DB0ZDF station:
2015-07-18 06:38 R3LW 28.125951 -18 -1 KO54mq 5 DB0ZDF JN49cx 1629 261
2015-07-18 06:38 R3LW 28.125964 -11 -1 KO54mq 5 DB0ZDF JN49cx 1629 261
2015-07-18 06:38 R3LW 28.125976 -13 -1 KO54mq 5 DB0ZDF JN49cx 1629 261
2015-07-18 06:38 R3LW 28.125989 -15 -1 KO54mq 5 DB0ZDF JN49cx 1629 261
Same time but is different frequency.
Spots come from other stations are normal.
What is the matter?