Direction Finding
Mobile Monitoring Receiver and Direction Finder

304DF – Mobile Monitoring Receiver & Direction Finder
304DF is Serana Karya Teknologi’s advanced mobile monitoring receiver and direction finder. It provides 64 channels for simultaneous monitoring, listening, and recording of analog clear voice push-to-talk (PTT) communication using FM, AM, or SSB modulation.
The HUGIN 304DF system delivers a complete signals intelligence overview, integrating real-time monitoring with line-of-bearing (LOB) visualization in a single interface.
Key Facts
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Simultaneous monitoring and recording of 64 channels
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Automatic direction finder
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Intuitive command-and-control software
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4 individual tuners with 80 MHz instantaneous bandwidth each
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Monitoring & DF frequency coverage: 20 – 520 MHz
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Optional monitoring extension: 150 MHz – 6 GHz
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Compact and rugged design for mobile and field operations
Features and benefits
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64 Monitoring & Recording Channels
HUGIN 304DF enables operators to monitor and record up to 60 clear voice interceptions and 4 digital signals simultaneously. All digital drop receivers (DDRs) can be configured in real-time. Settings like centre frequency, bandwidth, demodulation and AGC mode are controlled individually per DDR. -
Automatic Direction Finder
HUGIN 304DF automatically calculates & records line of bearings (LOBs) of all assigned channels. The LOBs are, together with the position of the collection asset, presented on a map. By moving the asset, it is possible to geolocate target emitters. The active LOBs are displayed in a polar display and on a map. -
Intuitive Command-and-Control Software
Intuitive C2 Software: The intuitive command-and-control software provides operators with a 360 degree situational awareness overview making it easy to make decisions on the spot. Operators manage the spectrum and assign the digital drop receivers (DDR) via a single laptop screen. All recorded voice channels can be played back in near real-time. -
Mobile Applications
The DC-powered tactical system comes in a protective case for easy transportation. It has been designed to be used in any car or other moving collection asset that allows temporary mounting of the collection, DF and GPS antennas.



