# (c) Royal Meteorological Institute Belgium # Maximum Usable Frequency (MUF) at distance (D) # Ionosonde: DPS-4D, URSI code: DB049, coordinates: 50.1°N, 4.9°E # Most recent values as of: 2025-07-20 14:55:00 UTC # D(km) MUF(MHz) 0000 6.9 0100 7.5 0200 7.5 0400 7.8 0600 8.3 0800 9.0 1000 10.0 1500 13.0 3000 20.4 # Note: automatically scaled values, provided "as is". # See http://ionosphere.meteo.be for more information.