• SDR NEWS/PROJECTS 31 07

    From LU9DCE@21:5/101 to RTLSDR on Wed Jul 31 15:10:01 2019
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    ESTACION DE PACKET RADIO - BUENOS AIRES (GF05OM)
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    Title : Tracking Multiple Amateur Radio APRS Balloons with RTL-SDRs

    Content : Last month Jeff Deaton from " Edge of Space Sciences "
    (EOSS) presented a talk called "SDR Multi Balloon Tracking", where
    he discusses how EOSS are using RTL-SDR receivers to track their
    APRS high altitude balloons. EOSS is a Denver, Colorado based
    non-profit organization that promotes science and education by
    exploring frontiers in amateur radio and high altitude balloons. The
    talk overview reads:

    Title : YouTube Review of the RS-918: A Chinese Clone of a Clone
    of the mcHF SDR

    Content : Over on YouTube  Kevin Loughin  has uploaded a video
    reviewing the "Recent RS-918" which is a Chinese clone of the popular
    mcHF open source SDR transceiver made by Chris (M0NKA). The mcHF
    is a well known small and inexpensive home brewed open source HF
    QRP SDR that was started back in 2013. It's sold either as a kit
    for 236.82 GBP (US$287), or with metal enclosure at 292.78 GBP
    (US$354). The kit comes with SMD components already soldered, but
    you still need to solder the through hole components and assemble
    it into the enclosure. The RS-918 clone can be found fully assembled
    as a ready to use product on eBay for approximately US$400.

    Title : GR-Oscilloscope: Using an Oscilloscope as a Software
    Defined Radio

    Content : A modern digital oscilloscope uses an analogue to digital
    converter (ADC) and digital signal processing (DSP), just like a
    software defined radio does, so it stands to reason that with some
    software hacks an oscilloscope could be turned into an SDR.

    Title : Developing Your Own SDR Applications With Python

    Content : [ Max-Felix M├╝ller ] wanted to develop his own SDR
    application with the goal of learning python and a bit about signals processing. To accomplish this goal he’s using [ pyrtlsdr ]
    a library which wraps many of the functions from the [ rtlsdr-dev
    ] library into a Pythonic set of functions that you can use to
    develop SDR applications for an RTL based SDR in python. Over on
    Hackaday.io Max-Felix has been writing about his Python RTL-SDR
    experiments and has been uploading sample code for anyone to take
    a look at and learn from. 

    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.


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