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njc
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Thanks, guys. It's likely I used too much flux, but it seemed necessary. Maybe I should hold the board vertical, heat the chip (not to solder melt temps but enough to liquify the flux) , and apply IPA to the top and let it flow down and wash out. Te…
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Does your power supply have sense lines? You might consider a supply that has them for your application. It will compensate for V drop in the cables. It will also prevent an overvoltage condition which could happen if you cranked it up and then h…
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This is likely not your issue, but something that came up recently for me was Cisco's "port security" which rather inconveniently will shut down a port when MAC addresses are detected that it doesn't expect. In my case, we brought some ne…
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I used the really small and thin solder wick and an iron, being careful not to rip anything up or scrape any solder mask. It took patience. I used a microscope to inspect and went over any pads that I wasn't satisfied with. Then I cleaned them wi…
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So the kiwi has been working great...until Sunday! After some debug, I found that the 1.0V rail was shorted to ground. I eliminated components by removing the diode, and then the inductor on the power supply. Using a FLIR device and running some …
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The noise blankers seem to work well for me also. Other options are to seek out and repair any "bad" connections on those fences...or use wire cutters😁
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It's not just Windows 10 as I seem to have the problem on Windows Server 2012R2, Ubuntu, and even Android. It seems to be Chrome/Chromium related. Brave has the problem, Midori and Firefox seem fine. As always, YMMV.
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Confirmed, the latest Chrome Canary does NOT have the popping problem!
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John, Thanks for your continued efforts. I still have the popping on v1.446. I noticed something interesting that might be a clue. If I change the sample rate via windows control panel (mmsys.cpl) I can change the frequency of the pops. At 192k t…
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I made a new discovery. The popping stops when I select "null LSB" or "null USB" on SAM.
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See this thread: http://forum.kiwisdr.com/index.php?p=/discussion/2251/v1-440-c-quam-channel-queueing-camping
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Confirmed, Midori (portable) seems fine.
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I think it might be a Chrome/Chromium issue, perhaps OS dependent. I installed Firefox on Win2012 Server R2 and it does not have the pops. Also on my Android phone Chrome has the pops, Firefox doesn't. So it seems for now the work around is to use …
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Oh and I can confirm that it is NOT present on the recordings.
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OK I just played with it for quite a while. SAM/SAS/SAL/SAU/QAM/CW and IQ modes all pop. In fact it's most obvious in CW (with the carrier in the passband). I don't hear it in the AM or SSB modes. It happens on strong and weak AM signals. It does …
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I just tried this. The popping does not stop in IQ, even after waiting a while. It stops when in regular AM mode. I've found the pops happen on Windows 10 and my Android Pixel2 (Chrome). One thing to note: My popping is not as regular as Stu's…
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Yeah, it is a pain. I also found that in order for the wifi to connect, eth0 (wired) needed to be disconnected so keep that in mind. I wasted several hours (days?) on that...
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Understood. My comment was mainly "tongue-in-cheek" anyway. Thanks for everything you've done and continue to do with this project.
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Yes, the "camping" feature is great! A thought: It seems that when the primary user disconnects the "campers" are cut off. Would it be possible for one of them (the first one?) to take over so as to avoid the interruption? I kn…
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If the resistance on the barrel connector (kiwi board by itself) looks good, try to apply power (5V, 2A or more) and check the voltage rails. You can also check if anything is getting hot. See this thread/comment: http://forum.kiwisdr.com/index.php…
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I did a little sleuthing. This kiwi from Edinburgh, IN receives WZZB from Seymour, IN quite well. WZZB is on the C-QUAM list and is a music station. Here's the online stream for verification: https://wzzb1390.com/stream-wzzb Nick W1NJC
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Slightly off topic here but related nonetheless. Verizon FIOS recently changed their routers to not report TTL data on ICMP traffic (at least that is what I think). This causes tracert in windows to return data like this: C:\Users\njc>tracert f…
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OK so it's not a DNS issue. The output from tracert 50.116.2.70 will be useful.
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I don't know what DNS server the OP or isitdownrightnow.com are using, but the fifty or so I just checked all resolve to 50.116.2.70. However, the reverse DNS for that IP address is li420-70.members.linode.com. An A lookup on that name returned IPv…
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The horizontal polarization of the dipole might be helping. Most QRM tends to be vertically polarized. Balanced antennas can be better over unbalanced too. You might try a horizontal, balanced antenna and see what happens (dipole, loop, etc.). I …
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How close are you to neighbors? Can you replicate the problem on another receiver if you have one? If not can you run the kiwi on battery and use a laptop or something and kill the mains to your house? If you can't do either of these, can you try …
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I 2nd the idea of reducing antenna gain or maybe try an attenuator. See what effect a 10 or 20 dB pad has. I run mine with 3dB (or is it 6dB?) on it all the time because I get overload from AM BCB and SW BCB (the 6MHz stuff I think). Keep us poste…
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John can weigh in, but I don't think the 5V is used directly by any component. The LDOs all have max inputs to at least 5.5V, not sure about the Beagle though I expect it also to be at least 5.5V. I like to run 5V devices at around 5.25V as well. …
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I just tested a 750W/1500W 12VDC->120VAC inverter and boy is that thing noisy! 😲
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http://forum.kiwisdr.com/discussion/comment/10960#Comment_10960 @dcassell Which NOCO unit do you have and which freqs do you see the RFI? I have one of the newer 5A models and haven't noticed any issues.