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  2. List of software-defined radios - Wikipedia

    en.wikipedia.org/wiki/List_of_software-defined...

    PCIe SDR MIMO 2x2 [84] Pre-built 70 MHz – 6 GHz ? 61.44 Msps 2/2 PCIe (1x) No Yes No PM-SDR [85] Pre-built 100 kHz – 50 MHz (up to 165 MHz using harmonics) 192 kHz ext No External ADC required (I/Q output) ? USB Yes Yes ? PrecisionWave Embedded SDR [86] Pre-built / Customizable Frontends 1 MHz – 9.7 GHz (depending on frontend) 2x RX: 155 MHz

  3. Doppler radio direction finding - Wikipedia

    en.wikipedia.org/wiki/Doppler_radio_direction...

    Where F r is the frequency of rotation in Hz and F c is the target frequency in MHz. [ 13 ] [ a ] Consider the example of a truck hunting an FM radio station at 101.5 MHz, while driving around a 100 metres (330 ft) wide pad (50 metres (160 ft) radius) at 25 kilometres per hour (16 mph).

  4. Transmitter hunting - Wikipedia

    en.wikipedia.org/wiki/Transmitter_hunting

    Transmitter hunting (also known as T-hunting, fox hunting, bunny hunting, and bunny chasing), is an activity wherein participants use radio direction finding techniques to locate one or more radio transmitters hidden within a designated search area.

  5. Software Communications Architecture - Wikipedia

    en.wikipedia.org/wiki/Software_Communications...

    The SCA is published by the Joint Tactical Networking Center (JTNC). This architecture was developed to assist in the development of Software Defined Radio (SDR) communication systems, capturing the benefits of recent technology advances which are expected to greatly enhance interoperability of communication systems and reduce development and deployment costs.

  6. Amateur radio direction finding - Wikipedia

    en.wikipedia.org/wiki/Amateur_radio_direction...

    The radio equipment carried on course must be capable of receiving the signal being transmitted by the five transmitters and useful for radio direction finding. This includes a radio receiver that can tune in the specific frequency of transmission being used for the event, an attenuator or variable gain control, and a directional antenna ...

  7. List of amateur radio transceivers - Wikipedia

    en.wikipedia.org/wiki/List_of_amateur_radio...

    The Kenwood TS-820S is a model of amateur radio transceiver produced primarily by the Kenwood Corporation from the late 1970s into the 1980s; some were produced by Trio Electronics before Kenwood's 1986 name change). The transceiver's predecessor was the TS-520, which began production a year earlier.

  8. Direction finding - Wikipedia

    en.wikipedia.org/wiki/Automatic_Direction_Finder

    Amelia Earhart's Lockheed Model 10 Electra with the circular RDF aerial visible above the cockpit. A radio direction finder (RDF) is a device for finding the direction, or bearing, to a radio source. The act of measuring the direction is known as radio direction finding or sometimes simply direction finding (DF). Using two or more measurements ...

  9. Cognitive radio - Wikipedia

    en.wikipedia.org/wiki/Cognitive_radio

    A cognitive radio (CR) is a radio that can be programmed and configured dynamically to use the best channels in its vicinity to avoid user interference and congestion. Such a radio automatically detects available channels, then accordingly changes its transmission or reception parameters to allow more concurrent wireless communications in a given band at one location.