on 1637.99 via SDR
1950 "Op de playa", next and talking in D
2036 ID, music, another station just below
second station on 1638.05 (not knowing which one is which one)
2100 only 1638.05 now
>>> the new station is Radio Frieloo
edit : from Achim and JBK, the first station was Boogschuter