Digital HF/VHF/UHF

The Digital HF/VHF/UHF Wideband Di­rection Finders, IDFx0Q cover the entire frequency range from 300 kHz to 3000 MHz or sub ranges thereof (see ta­ble below). The direction finders use digital signal processing both in filter­ing (FFT and filters with linear phase re­sponse) and in bearing calculation. Each direction finder consists of five functional units:
    DF antenna system
    DF switch and control unit
    Dual channel receiver
    Digital signal processing unit
    Remote client
The HF DF Receiver, TD10Q, is de­signed for the frequency range 300 kHz to 30 MHz; the VHF/UHF DF Receiver, TD50Q, covers the range 20 MHz to 3000 MHz. The Digital Processing Unit, DPUx0Q has two IF inputs so that both DF receivers (TD10Q or TD50Q) can be connected to the DPUx0Q (see block diagram on next column) at the same time. The software of the digital signal-processing unit con­tains as standard the algorithms for DF evaluation according to the correlative inter­ferometer method and the Watson-Watt.

Type Application Frequency Range
IDF10Q HF 300 kHz to 30 MHz
IDF50Q VHF/UHF 20 MHz to 3000 MHz
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