• SDR NEWS/PROJECTS 25 07

    From LU9DCE@21:5/101 to RTLSDR on Thu Jul 25 11:10:15 2019
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    +----------------------------------------------------------------------------+ Title : rtl-sdr.com

    Title : POLL: What do you want in a future low cost SDR?

    Content : We've decided to ask the community what sort of radio
    would be more popular for a ~$30 RX-only SDR. Note that thus far this
    is only a hypothetical SDR that does not yet have any designs. We
    are just feeling for what's most interesting to people and exploring
    for future ideas which may not even be feasible at this time.

    Title : Decoding the Lucky-7 Cubesat

    Content : Lucky-7 is a Czech cubesat that carries some interesting
    sensors including a low power GPS receiver, a gamma ray spectrometer
    and dosimeter and a photo camera. The creators also claim that
    it is "probably the lowest-cost scientific space mission in human
    history". It was recently successfully launched and orbited together
    with the Meteor M2-2 weather satellite and several other small
    satellites.

    Title : SignalsEverywhere: Satcom Antennas for L-Band Reception
    via RTL-SDR + Podcast on the MiTee CubeSat Project

    Content : On this episode of SignalsEverywhere on YouTube
    Corrosive shows off several antennas that can be used for Inmarsat
    and Iridium satcom reception. His video shows off a commercial
    Inmarsat branded satlink antenna which is designed to be used on
    moving ships, a grid dish antenna, a custom QFH iridium antenna made
    from a repurposed Vaisala radiosonde, a commercial Iridium patch,
    an older Outernet/Othernet Iridium patch and a custom Iridium patch
    that Corrosive built himself.

    Title : Dronesense: A LimeSDR Based Drone Detector and Jammer

    Content : Over on the LimeSDR CrowdSupply blog,  Ogün Levent has
    submitted a short article about his "Dronesense" project . Dronsense
    is a spectrum-scanning and jamming system based on the LimeSDR. The
    LimeSDR is a US$299 12-bit TX/RX capable SDR that can tune between
    100 kHz ΓÇô 3.8 GHz, with a maximum bandwidth of up to 61.44 MHz.

    Title : SDR-Makerspace Talk: Evaluation of SDR boards and toolchains

    Content : The  Software Defined Radio Academy  YouTube
    channel recently uploaded an interesting talk by Alex Csete
    (creator of the popular GQRX and GPredict applications), and
    Sheila Christiansen. Their presentation discusses their work with
    the European Space Agency (ESA), Libre Space Foundation and how
    they are running SDR Makerspace's that are helping students create
    and track cubesats. During the talk Alex and Sheila also describe
    various SDR hardware, and how they test them for their purposes.

    Title : A Demonstration of RSPDuo Diversity Being used to Cancel
    Local Interference

    Content : SDRPlay have recently published a video demonstrating
    how the new RSPduo diversity feature in SDRUno can be used to
    cancel local interference.  The SDRplay RSPDuo is a 14-bit dual
    tuner software defined radio capable of tuning between 1 kHz - 2
    GHz. It's defining feature is that it has two receivers in one radio,
    which should allow for interesting phase coherent applications such
    as diversity. The RSPDuo's diversity feature allows us to either
    combine two antenna signals together for an up to 3 dB increase, or
    for removal of an unwanted noise source via subtraction of signals.

    Title : Weather Satellite NOAA 15 Appears to have Failed (Again)

    Content : Back in April 2018 we posted how the NOAA-15 APT
    weather satellite that many RTL-SDR users enjoy receiving images
    from was having problems with it's scan motor resulting in image
    errors. The satellite recovered from that problem, but today the
    problem appears to be back and in a much worse way now.

    Title : Atomic Radio: Quantum Laser Based Radio Reception

    Content : Software defined radio (SDR) is a relatively new
    technology that has impacted the world of radio technology in many
    ways. But beyond SDR, there are still some other very interesting
    radio technologies being worked on, such as "Atomic Radio" a.k.a
    "Quantum Radio".


    +----------------------------------------------------------------------------+

    Hall's Laws of Politics:
    (1) The voters want fewer taxes and more spending. (2) Citizens
    want honest politicians until they want something
    fixed.
    (3) Constituency drives out consistency (i.e., liberals defend
    military spending, and conservatives social spending in their
    own districts).

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