benson
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Hi John, Just wondering if you see any merit in an enhancement of the ALE2G extension that looks up ALE call signs in a database. A fork of LinuxALE ( github.com/DigitalHERMES/LinuxALE ), which was the predecessor of gr-ale already had a data base l…
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Well done, thanks. The HFDL extension is working quite well with these latest updates. It would be great if a fourth display selection for ACARS could be added (Up and Download LPDU's containing both "ACARS:" and "message:") 73 B…
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@jks That is a good idea to have the latest table downloaded from kiwisdr.com. For the uploads, the latest and complete table from any KiwiSDR location will be fine. It looks that no major changes in frequency assignment happen within a 3 hour perio…
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Yes indeed, I tried out the multichannel capability of dumphfdl and likewise gr-ale decoder for a given set of frequencies within a wide receiver bandwidth. This goes pretty well even with a simple RTL-SDR at 2 MHz bandwidth. As you mentioned with …
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Good to see you got the HFDL decodes running. A busy single frequency like the one you used 13270 KHz for the Thai GS can already yield a lot of aircraft transmissions and position reports over a wide geographical area. For other freqs are you cons…
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John, reply sent by email due to attachments.
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http://forum.kiwisdr.com/uploads/106/CN780FYBUNXB.png Just recorded an IQ file from Kiwi at 13270 KHz and play back looks to be decoded normally by Multipsk. The forum engine does not accept my zip or wav file , so sending it to you via email jks@…
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Jim, Quickest way is to add "print(cartopy.__version__)" below import cartopy in the first cell. Let me know if you need other info to get this running. Since it looks like a Python or Jupyter issue I suggest we continue via pm.
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Hi Jim, In case the Jupyter notebook loads correctly, but MUF or FT8 data still does not plot please check your Cartopy version is 0.20.1 or greater. For a windows machine, I found that the easiest way to upgrade was to install the latest wheels fro…
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@WA2ZKD Thanks, that is a good idea to use a small portable hf radio for sniffing on a wet and steep roof. Certainly quicker than trying to repack the Kiwi as a portable.
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Thank you Glenn, for your analysis and suggestions. Interesting, I had not considered CM coupling mechanisms that would result in this type of interference only showing up at higher frequencies. Most SMPS effects that I have seen in the past already…
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"But you can't tell for sure without putting in the work" True enough John, I can't argue with that. Sometimes taking up a challenge by itself may have greater value or significance than the outcome.. Best regards, Ben
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Just curious.. The HFDL transmissions that I see are mostly BPSK with 300 or 600 bits/s data rates and on the busier ground station frequencies the messages are exchanged in rapid succession. Occasionally on good connections a switch is made to 120…
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Thanks ArturPL for your comment. The strange thing is that in this case the signal begins around 1350 KHz and it does not show up at lower frequencies. VLF thru MW below 1350 are rather clean. 73 Ben
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Vultr very active with scanning my Kiwi the last couple of days and I added these as well: 149.28.162.0/23 45.77.112.0/21 45.77.84.0/22 149.28.195.108 45.76.248.0/21 45.76.112.0/20 45.77.96.0/20 This is like hydra, chop off one head and another one …
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And also these added today (originating from vultr / constant) : 173.199.70.0/23 70.34.192.0/19 207.246.104.0/23 137.220.52.0/22 216.128.128.0/18
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Just like Jim mentioned above, I also see that the ALE2G extension runs fine for a while and then just closes the channel with only a "LEAVING after ....." message in the log. This applies whether scan running or paused. Up to 3 instances …
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Added another ip belonging to vultr.com to my local list: "155.138.139.75"
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Another awesome addition to KiwiSDR, specially using the heuristic approach in classifying the type of station out of a total of 13000 plus. Just having a quick look only for now I noticed that: 1/ The Fax category could use a lowering of the (usb)…
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Yes, I also have seen anywhere between 12 min and 15 hrs before the decoding and the waterfall on the tabs where the ALE2G extension is running, stops. Tried different browsers on Linux and Windows. Checking the logs around the times when this happe…
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Wow, many great improvements in V1.465 . Will need some time to check out and monitor before commenting further. Thanks for all the work building this extension.
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Hi Ulli, It looks your Kiwi at 213.118.213.254:8074 is online at the moment..... 73 Ben
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When scanning does the decode from pressing the test button stop the scan and then resume? Yes, it does in the situation of halting after a "scanning paused, signal detected event". The only other way I found is close then re-open the a…
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Yes indeed, when opening an ALE extension first time the "current list" is loaded from kiwisdr.com and populates the Amateur, Govt, Milcom and Utility menus. This list -actually json file, as mentioned at the beginning of this thread - is …
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Hi Martin, As an alternative instead of an url string: on the admin - extension - ALE_2G page you can enter your own scan group very easily and quickly. But then perhaps you have a situation in mind scanning on another Kiwi as a guest... 73 Ben
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Using a BBAI Kiwi on a Win 8.1 machine and chromium browser. It can run 14 channels with the ALE2G extension however I noticed that using more than 8 ALE extensions the GPS processing starts suffering and becomes to a standstill beyond 10 (see atta…
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Hi Martin, In SE Asia I still see quite a few traditional chirp sounders active. Although I can find the range to the GPS disciplined stations using Chirpview determining the location would require a Chirpview set-up at another location in the regio…
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Hi August, After you click the WF tab you will see below the Auto Scale button another one called Slow Dev. Pushing it will change the spectrum display to colour. bregards, Ben
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Hi Jakin, I do notice that you are asking about a Kiwi extension and although that would be preferable you could have a look at KG-HFDL, which is an excellent HFDL decoder with integrated map display and Arinc-714A selcal decoder all built in. It w…
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Jim, WA2ZKD allowed me to use his Kiwi for some scanning tests and the results are shown in the attached "results ALE scan 20210605.txt" I used Catsync with his Kiwi loaded and a frequency database of 10 channels to scan at different rates…