Christoph
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@jks: this is great news
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@linkz: when reading your screenshot more carefully I realized that the .wav files have indeed the right size. I got confused by the spaces between the numbers, i.e., "1 424 874" vs. "1424874". The only other thing I can think o…
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These WAV files are too large. Did you clone the GitHub repository or download it as a zip file? When I installed octave using the windows installer all packages were already there, so on Windows there is no need to install the signal package by ha…
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... the IQ WAV files should have the sizes shown below (Image)
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Strange. For me it works (Windows 10 and octave 4.4.0), see the attached screen shot (Image) Can you double-check that the .wav files in the iq folder are complete? One minor comment is that it is not necessary to copy all .m files from m/ and ki…
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Hi @linkz, please try the latest git master and let me know if it works. I was able to reproduce your problem and found this explanation https://stackoverflow.com/questions/32808572/why-g-isnt-performing-structure-packing-here i.e. __attribute__((p…
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Which compiler are you using? i.e. what does 'mkoctfile -v read_kiwi_iq_wav.cc' say?
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Hi linkz, this is an error in the .oct file generated by read_kiwi_wav.cc and I suspect it is because Visual Studio ignores __attribute__((packed)) which is crucial for the 'kiwi' chunk. Can you make a test using the current master tag https://git…
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You might want to have a look at the latest commits which are for compatibility with Windows but have not been tested on Windows. 73 Christoph
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There is no progress on the angle of arrival technique. It would be great if anyone could try this approach. But recently I made first steps towards using propagation delays based on an approximation of ray-tracing using IRI2016 electron density pr…
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If you used the '-w' or the '--kiwi-wav' option then there are custom wav chunks with gnss time stamps in the recorded file. If the software you are using is not ignoring them this might explain what you observe. Does your IQ wav file play on you c…
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Yes the option to start a new wav file every dt seconds (--dt-sec) is in the jks-v0.1 branch. > My primary motivation for this is that I have found that the wspr decoder included in the kiwi cannot decode all of the signals recorded on HF at KPH…
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I just made a test myself: > ../kiwiclient/kiwirecorder.py -s sielsdr.ddns.net -p 8073 -m usb -f 3592.6 -L 1400 -H 1600 --station=DF0KL --dt-sec 120 /Applications/wsjtx.app/Contents/MacOS/wsprd 20180609T044800Z_3592600_DF0KL_usb.wav _usb 1 0.…
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Hi @rrobinet, @jks, starting kiwirecorder.py by hand or by a script every two minutes is certainly possible, but it might be better to let kiwirecorder.py chop the wav files into two minute long files. I have just committed a small change to kiwire…
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These timestamps are stored in a custom wav header. For this you need to use the command line parameter '-w'. An example for decoding this custom wav header can be found in the c++ code for the read_kiwi_iq_wav .oct file. The precision of these time…
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Hi @WA2ZKD, For sure the documentation can be improved. But for this you would need to be more specific: what exactly is for you/the user you imagine not clear/missing/etc.? 73 Christoph
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Is there some kind of backup in case not all KiwiSDRs obtain the new you key? Does rx.linkfanel.net rely on sdr.hu? It would be a pity if because of this KiwiSDRs became invisible.
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Some time ago I have written code for DGPS demodulation and decoding, seehttps://github.com/hcab14/HFMonitor/blob/master/include/demod/msk.hpphttps://github.com/hcab14/HFMonitor/blob/master/include/decode/rtcm2.hpp It is based on this thesishttp://…
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Hi Martin, for some reason the waterfall is not displayed on your public KiwiSDR - one can see how the 1st line is updated but everything below stays black. I am using Chrome 62.0.3202.94 (Official Build) (64-bit) on OSX. Your private KiwiSDR is OK…
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Some recent examples of TDoA measurements can be found here:http://hcab14.blogspot.com/
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Done. Thanks.
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See the latest commits herehttps://github.com/hcab14/kiwiclientwhich allow recoding data streams from an arbitrary number of servers. To record 4 data stream from my local KiwiSDR at 30,80,100,200 kHz with manual AGC gains I use p.p1 {margin: …