A hyperbolic radio navigation system with a baseline only 5 - 6 km long, operating at a frequency of about 300 kHz. It uses three radiators to generate two daisy shaped patterns which are slowly rotated and also switched alternately. The signal consists of coded dots and dashes. Because the baseline is so short, Consol should not be used at distances of less than about 50 km from the baseline. The usable range is about 900 to 1800 km during daytime; it is more at night. During the day, the error in direction is about 0. 6^o at an angle of 60^o to the baseline. The error in location is a few kilometers, depending on distance from stations, diurnal effect, propagative constants, etc. The system was originally developed under the name Sonne and is still in limited used, mainly by shipping (in 1977 there were 13 stations in operation).