I saw interesting conditions coming up o ... / 2010-05-23

I saw interesting conditions coming up on the Tropospheric ducting forecast for Northwest Europe so I ran a dvb-t scan and indeed found:

tune to: QAM_16   f = 674000 kHz I999B8C23D0T8G4Y0 
SDT (actual TS)
        service = MDR S-Anhalt (ARD)
        service = NDR FS NDS * (ARD)
        service = SWR Fernsehen RP (ARD)
        service = WDR Düsseldorf (ARD)
        service = WDR Wuppertal * (ARD)
        service = WDR Duisburg (ARD)

tune to: QAM_AUTO f = 690000 kHz I999B8C999D999T999G999Y999 
SDT (actual TS)
        service = arte (ARD)
        service = Phoenix (ARD)
        service = Einsfestival (ARD)
        service = Das Erste (ARD)

tune to: QAM_AUTO f = 746000 kHz I999B8C999D999T999G999Y999 
SDT (actual TS)
        service = ProSieben (ProSiebenSat.1)
        service = SAT.1 (ProSiebenSat.1)
        service = kabel eins (ProSiebenSat.1)
        service = N24 (ProSiebenSat.1)

No extra services from the east of the Netherlands, so this must have been some interesting tropospheric ducting. First time for ARD and Prosieben/Sat.1, I have seen the WDR multiplex on that frequency before from Brunssum, a sign this must be a single frequency network. Searching DVB-T Sender Tabelle shows the transmitter at Wesel is the most likely source, a distance of 112 kilometer.