Here you can find current and archived information from our company regarding our products, services and events.

  • 2025

    13.05.2025

    VHF Preselector RAP2.

    The RAP2 contains several highly selective (SAW) bandpass filters for preselection in the VHF range:

    • 70 - 83 MHz
    • 83 - 109 MHz
    • 109 - 169 MHz
    • LC highpass 169 MHz
    RAP2_70M_83M

    Example bandpass 1: 70 - 83 MHz

    A low-noise preamplifier is provided to compensate for the filter attenuation. This makes the RAP2 particularly suitable as an anti-aliasing filter for direct digitizing receivers (“SDR”) in oversampling mode. The RSR200 in particular requires such filters before its broadband VHF input in order to be able to receive certain ranges without interference depending on the selected sampling frequency. From firmware version 1.10, the RSR200 can switch the RAP2 automatically (control via RF cable) and set its own clock frequency to match the respective filter. The RAP2 can be remote controlled via WiFi. A remote power supply for antenna amplifiers can also be connected to the RAP2.

    RAP2_2
    RAP2_1

    08.03.2025

    New firmware for the RSR200

    Most of the RSR200 pre-orders have been delivered, the last ones will follow shortly. Many thanks to all our loyal customers! The devices are now being manufactured regularly in series production. Therefore, most of the RSR200s are now available from stock or with only short delays.

    The first update of the software is available (integration of the control of external devices such as active antennas RLA4 / RFA2 or preselector RAP1). Please also refer to the updated operator manual!

     

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