dcf42

dcf42 123.7kHz (300bd, bpsk) and 122.5kHz pilot tone?
What for is a pilot tone signal?

DCF42 is the call signal DGPS service claimant by the location Mainflingen in the long-wave range on the frequencies 122.5 kHz (only carriers) and 123.7 kHz of the German Telekom AG in co-operation with the Federal Office for cartography and geodesy, which makes highly exact positioning possible.