Christoph

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Christoph
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  • GNURadio package gr-kiwisdr

    Can you try this: (in gr-kiwisdr)
    mkdir build
    cd build
    cmake ../
    make install

    It's great you are looking into this.
    KA7U
  • How do I change the kiwiclient wav output samplerate?

    Here is a link to a manual for sox: sox.sourceforge.net/sox.html

    The following command resamples a wav file to 6000 Hz:
    sox 20190124T151751Z_77000_iq.wav output.wav rate 6000
    KA7U
  • Recording IQ data with >20kHz bandwidth from a single KiwiSDR

    It looks like I found a way to combine several IQ data streams from the same KiwiSDR recorded at different (by multiples of 12kHz or 20.25kHz) frequencies, so that the combined spectrum is continuous, see here. This uses GNURadio, so for everyone not familiar with GNURadio there is a learning curve.

    There are obvious applications, i.e., monitoring of HF radars such as CODAR, and WBHF waveforms.
    i56578WA2ZKDjks
  • Suggestion - FT8 decoder?

    Hi Andyz,

    You might want to try the squelch options of kiwirecorder.py. I do not know down to which S/N FT8 Mode can go. But you can see what happens if you use -T 10 (10dB over running average) --squelch-tail 0.2.

    And if the CPU power of the beaglebone is not sufficient you can do the processing and recording on another computer, e.g. a RPI, like some people do for WSPR.

    Christoph
    WA2ZKDKA7U
  • Suggestion - FT8 decoder?

    Hi Andyz,

    You might want to try the squelch options of kiwirecorder.py. I do not know down to which S/N FT8 Mode can go. But you can see what happens if you use -T 10 (10dB over running average) --squelch-tail 0.2.

    And if the CPU power of the beaglebone is not sufficient you can do the processing and recording on another computer, e.g. a RPI, like some people do for WSPR.

    Christoph
    WA2ZKDKA7U