jks
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Okay, so we have a dual footprint for the antenna balun now: https://forum.kiwisdr.com/uploads/289/AFOO2W88QUT1.png
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Some time ago we changed the recommendation that BBAI not use the Kiwi's DC input jack, but instead use the BBAI USB-C as you mention. Kiwi + BBAI current through the Kiwi CMC was much too high and there were some reported failures. On KiwiSDR 2 the…
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No, something like that violates the low-risk principle. And there's no space for them. Besides, you have better alternatives. In the case of BBB/AI/AI-64 you can connect to the 5V (outer two pins) of the USB-A host connector. In addition to USB-A t…
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My.kiwisdr.com is still saying no KiwiSDRs at my public ip address. Yes, I didn't change it because I wanted you to see that it was really set to "No". The entry now appears on my.kiwisdr.com as it should. When you visit my.kiwisdr.com it …
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That's great!
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Ken is talking about the setting on the admin network tab: Register this Kiwi on my.kiwisdr.com on each reboot? (Yes/No)
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I looked at the mechanical aspects again. And I think I can actually fit a KK81 package inside the Kiwi's RF shield. So using a T1-1T-KK81+ is a possibility. When I looked at this some years earlier the issue was the package height versus the vertic…
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Well, a mixed bag for the ADT1-1+ -3 dB at 30 kHz which is much better than the 150 kHz spec. But the drop-off is pretty severe below that: https://forum.kiwisdr.com/uploads/390/2G31BJKWHENA.jpg Flipped over you can see it's a binocular core. That m…
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So if the (ADT1-1) transformer could be bypassed with a jumper, that would be good. No one is a bigger fan of LF/VLF reception than I am. So let me see about adding some DNP pads to bypass the balun. Also, today I am doing the first response measure…
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Are you planning to use again a Beaglebone for this Kiwi SDR ? Yes. The current plan is to sell bundled with a BBB and (possibly) a newly-designed enclosure. But also (as before) offer the board-only so you could purchase a more powerful BBAI or BBA…
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Not sure I understand. Are you having problems making a regular user connection from your local network? Or is it the same issue as with admin connections -- you get booted within a few minutes?
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So it looks like you're using the proxy service (even though not a publicly listed Kiwi). I didn't quite realize that. It's possible that the my.kiwisdr.com mechanism doesn't work when the proxy is in use. I'd have to do some checking. [edit: it doe…
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Okay. No, you don't have to install the Kiwi software additionally. The image file mentioned in the instructions is a Debian 10 image that has already had the Kiwi software installed. It's an old Kiwi version (v1.486 I think). But that's okay becaus…
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Ken: Okay. Please email support@kiwisdr.com your public ip address and/or Kiwi serial number so I can check the database. Also, please restart your Kiwi and let's see if it re-registers correctly.
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Minimal changes. Fastest time-to-market with lowest possible risk. BUT since the PCB is going to be re-spun fix some of the known limitations that don't add too much risk: (short list follows) So "modern remake". Anything major (more chann…
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Yes, Glenn has done some measurements and I should be receiving parts tomorrow that I can measure. I would have preferred to use the T1-1T-KK81+ which I've used successfully at 10 kHz with an active antenna. It's spec'd at 2.8 dB loss at 50 kHz but …
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There has been extensive discussion and even some measurements by the advisory group about both the digital attenuator and input transformer (MiniCircuits ADT1-1+) There are cost and space tradeoffs. The attenuator used is the same as in the OpenHPS…
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Hi Ken, At some point did you see an entry for your Kiwi and then click the clear entry link? Because I see in the logs that your Kiwi registered for the my.kiwisdr.com service back on August 2 but does not now appear in the table for some reason. T…
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Hi Ken. If your Kiwi is running a relatively recent version of the Kiwi code (like v1.6xx) then you don't need to upgrade to Debian 10. You'll continue to receive Kiwi updates with Debian 8. If you do want to upgrade but don't care about preserving …
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I'm not sure I understand the question. If you have a beaglebone green (BBG) running the original Debian 8.5 when you received the Kiwi then it is now necessary to upgrade to Debian 10. And the only reasonable way to do this is to re-flash the BBG u…
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There are a few points that are important. Some people have reported that 32 GB sd cards and larger don't work. I have used 32 GB cards without problems myself. Try and use a 16 GB card if you can find one. Use a good quality card. See if your progr…
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Yes, you are correct. You don't need to jumper over the T301 pads since everything is powered from the AI-64. Well the ADC clock looks fine. The Rigol isn't the best frequency counter, but it basically says the oscillator and buffer chip are okay. J…
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You're not able to follow the instructions here for downloading the Kiwi Debian 10 image to be placed on an sd card? What is the issue exactly? You don't have a way to write sd cards or something about the procedure didn't work?
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So it sounds like T301 is fried, which is not a surprise since you had it running with a BBG at the time and 5V connected to the Kiwi DC jack. But even though you're now using an AI-64, and powering via the AI-64 DC jack and not the Kiwi DC jack, I …
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The GPS clock is used for the FPGA cpu. So that makes sense. I suppose if the ADC clock was way out-of-spec (e.g. too fast, bad waveform, undervoltage or something) that could cause issues. But that is unlikely. Yes, the scope will tell you..
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We can have an arbitrary number of firmware options. It just needs to be another entry in the menu/table that selects a different 2 MB FPGA bitstream file.
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Very odd that you were initially able to connect to the admin page though. Because the first thing the Kiwi software does when it starts is program the FPGA (via the SPI) and then download a program into the little firmware cpu that runs on the FPGA…
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Hot air rework effecting surrounding parts is a real problem. And that crappy lead-free solder doesn't help matters either.
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Some more thoughts: It's possible the TVS diode(s) have degraded under such a harsh event. Although it seems unlikely that would manifest as only moderate attenuation. Usually they just go full short when they fail. Knocking them off the board with …
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In hindsight, it probably would have been worth the minimal cost of replacing the ADC preamp chip at the same time. It seems odd that the signal/no signal behavior is different. Or maybe not -- my knowledge of RF gets sketchy real fast here.