Efficient detection of telecommunication signals is mainly based on direction finding and locating of emitting sources. To this end several direction finders have to be combined. With the aid of R&S MonLoc, all direction finders from Rohde & Schwarz can be networked and remotecontrolled: R&S DDF19x, R&S DDF0xM, R&S DDF0xE and R&S DDF0xA. Depending on the direction finder used, conventional radio signals, short-term signals or broadband emissions can be located. DF and radiolocation results are displayed on a digital map.R&S MonLoc is part of the R&S RAMON product family. A MonLoc system can therefore be easily integrated into radiomonitoring systems – even if they are already installed. A MonLoc radiolocation system can also be extended or upgraded with other RAMON software and hardware modules.