HB9TMC
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I get suspicious connections several times a day from IP ranges which are direct allocations which belong to a "The Constant Company, LLC". They log in with a username of generic two letter words with a dot in between (i.e. Kaily.Trnuer, T…
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I'm thinking about getting a BBAI-64. Can they be cooled entirely passively if they are not in an enclosure? And what are the available Channel/WF configurations, are there also full WF channels in the 14 channel configuration?
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I have a question regarding TDoA operation. When I'm on a kiwi and select two other kiwis to do TDoA, is the kiwi to which i'm connected to automatically used in the calculation? Or would i have to add it too to the list (so essentially requiring 2 …
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@G8JNJ It appears to be happening on all carriers below ~1 MHz (Just as the longer periodic attenuation variation), the lower the frequency and the stronger the signal, the better audible. Towards 1 MHz it isn't audible anymore but visible in the a…
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I have also intermittently black waterfall and audio drop outs on a full WF channel. 8 channel config, with 3 waterfall users. The drop outs appears to happen less often and shorter, if i close the AF waterfall user. Another thing: I think that the …
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Shahriar from The Signal Path does RF related repairs and teardowns: https://www.youtube.com/@Thesignalpath Happy Holidays!
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It could be this setting: https://forum.kiwisdr.com/uploads/385/R27TC0VYW7M5.png
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Paypal would also be my preferred method. But it's possible to use paypal via google pay. (Edit: Apparently that doesn't work here) Bank transfer would also be good.
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Excellent, thank you.
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If you run it in a loop like this, it is making about 1 connection per second, using up about 1.5 MB per minute: while true; do ~/git/kiwiclient/kiwirecorder.py -q -s kiwihost -f 28 -m USB --S-meter 1; done The settings (modulation/bandwidth) don't …
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That would be about 13000 per day, so maybe 20000 in total before it runs out of memory I'll try to write a script to see if I can trigger it faster tomorrow. But I can see now that the memory usage is steadily increasing. No hurry.
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100.71.x.x is CGNAT, you can only access hosts behind that via reverse proxy. I rented a vServer with a public IP address for that purpose.
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Thank you!
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Glad it's not just me, thanks for checking.
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I had a lot of trouble with my neighbors VDSL lines though. In the past weeks I've been walking around in my area with a Malahit portable SDR to locate noise sources. And I concluded that you can be lucky and have low noise in a populated area, or y…
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Although, connecting PE directly to DC- might make things also worse, since there might be noise on PE. I have the DC input now filtered like this, which seems to be blocking any PSU noise. https://forum.kiwisdr.com/uploads/278/OX1Z37O77HGG.png
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I did more tests with the Apple 20W supply. In the end I figured out how to get rid of the 100 kHz noise, but I don't know why that works. Maybe someone can give me a hint. The antenna is a DC isolated inverted-L, with about 1000m worth of ground ra…
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Ok that's interesting. It happens on all 3 of my kiwis, but they run debian 10.13. The "good" count even drops to zero from time to time. https://forum.kiwisdr.com/uploads/749/D8B1HQYOBXLS.png
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I had a few QSOs with the Olivia mode. It's been a while since, but there was regular activity between 14100 and 14150 kHz.
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I haven't connected the Apple charger to the kiwi yet. But I charged my phone with it, in the same room where the kiwis are and it is generating a bit noise in the spectrum from 100 to 200 kHz. I guess this is from the AC side. The DC side is too sh…
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Linear PSUs are not expensive, but electricity is ;) My current linear PSU has an efficiency of 37%, the Apple PSU has 85%.
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Thank you for sharing your experience Peter, I'll give the Apple PSU a try.
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I have also tried several (about 10?) SMPS and one problem was always conducted noise on the primary side (230V). It would be interesting to know if the Apple power supplies do also have sufficient filtering on that side. I feel confident to build f…
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Well it is read once, so, you would have to define it every time before you read the variable. Or you could do: get_attenuation() { jq -r '.init.rf_attn' kiwi.json } attenuation=$(get_attenuation) One query requires 33 ms CPU time on my BBG, So yo…
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Where do you need that variable? In bash you could do something like attenuation=`jq '.init.rf_attn' kiwi.json` # echo $attenuation 4.5
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Alternatively, you could use the S-Meter/RSSI readings from kiwirecorder --S-meter=S_METER, --s-meter=S_METER Report S-meter (RSSI) value after S_METER number of averages. S_METER=0 does no averaging and reports each …
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@IK8SUT jks wrote earlier, that the plan was to sell the Kiwi2 bundled with a BBB. But I do have also a spare BBB waiting for a Kiwi board :D
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Thank you for sharing the measurements. Maybe it would be also interesting if you could do comparisons of the sensitivity across the frequencies. For example feeding a -120 dBm signal to the antenna input and measuring the audio SNR.
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Ok thanks
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Works, thank you!