Powernumpty
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- Powernumpty
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Hi Mike, The concensus seems to be 5.1-5.3V. Here I run a variable linear supply that feeds Kiwi and a PI or two at 5.25V (the highest recommended for the PI). I've run the Kiwi higher and it is much better at handling higher voltages than the PI bu…
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If you have another Linux machine on the network open the syslog to remote devices (UDP 514) then edit (on the Kiwi) /etc/rsyslog.conf to send the logs out to the remote server example "@192.168.1.5". The Beagle is really quite strict abo…
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Regarding port 22. I have heard of devices that some friendly white hat had discovered "open on the web without decent password" and just shut them down to give the owner a clue something was wide open, while at the same taking the device …
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I have found the MLA-30 didn't work powered from the BBG USB port here but I had assumed that was some failure of the design rather than no supply to the port (will have to go get one and check..) . As the power injector for the MLA has a 5V-12V ste…
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OK that explains the low signal levels. I'd look at other ingress methods also. Here I had such terrible pickup that I struggled until I pushed some Cat5 External cable (for the LZ1AQ) up 10mm copper pipe and buried that, I connect the SDR's to that…
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That is where xDSL causes issues in the UK, does seem like a data signal. I'm surprised how low the low frequency signals are on the antenna, I get that sort of frequency cover and QRM if a coax fed loop does not have the nut tightened. I would try …
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That works, so well it seems like it has always been there. I'll use that for some elusive signals I've seen in the spectrum max hold. BTW Forum upgrade is welcome too,
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Hi Tony, OFCOM and the like are there to give jobs to the boys and to give the appearance of "doing something". The only way they work is by comparing the financial value of lobbying, if enough of us push back they may make some small chan…
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Quote "and variable current limiting" - what did you set the current limit to? Did you scope the voltage during boot? There is an inrush peak which can hit the current limit (dropping the voltage - result no BB won't boot), I assume you wa…
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OK so let me get this right (from other posts) both the new Kiwi and the secondhand one act the same? Have you tried both capes on either BB? I think there are other posts where the John (jks) describes fault finding this sort of issue if I find I…
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Why is it not good? I know feeding 5.3V to the Kiwi sounds a bit agricultural but I have unintentionally fed much more than that into the Kiwi (not Beaglebone direct) over an extended period without issue. Unless you are going to use sense wires in…
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Really great option, thanks to you and Christoph. Would double upvote if I could.
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@john I assume you have read the PSU threads about tweaking the supply voltage up to around 5.3V? The Beaglebone will fail to boot if it dips during boot kiwisdr.com/quickstart/index.html#id-power and if you disconnect the power and just do the same…
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Out of interest (partly in response to your post) I just tried an Optimate3 charger, could not see any RF at all while charging a lead acid in the same room as the SDR (short test only). I think that must be a transformer design as the peak charge c…
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I posted this to the UKQRM group. Turns out this specific issue and charger type was mentioned in RadCom (RSGB magazine) a few months back. The actual issue is that the manufacturers are leaving off the mains filter components. They are still being…
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Unfortunately I think Ofcom are about as much use as a chocolate teapot. I expect the design passes whatever lax regulation it needs to for import approval, then they don't fit the filter components in production for some brands/batches. Ofcom's re…
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I've Just been looking on Amazon, these are sold under so many brands it is hard to know if any have filter components fitted or if they are all the same, just a bad design. I have found one around £25 with detachable AC and DC leads, that would be …
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OK there is room for improvement in reception there... I'm sure I've seen that level with a broken coax (the shield corroded to white powder). I really would check that antenna and feed, also move it away (shield) from WiFi routers, motors or DECT p…
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Mike, how are you powering, and cooling the device? Stu
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I assume it's this one. (Image)
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OK I think this is something I've done by turning off port forward some time after registering (while working on antenna) and forgetting to turn it back on. Sorry for the noise. I've just turned port forward back on so will see if it updates. I will…
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The second Kiwi I have public has the antenna as LZ1AQ in "Public" and other comments in the "Web page". I just tried a couple of browsers on two machines in case it was cached, rx.kiwisdr has two entries for M0AQY both listed W…
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It took me a few moments to work out the values of the axis but once I got that it's an interesting challenge to try and think colour balance, over brightness range. I've wanted to to get a theme that works under F-Lux for a while as I darken the sc…
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I think I need to dig out a graphics tablet and pen for the designer, was getting there with the mouse but kept going just off what I was trying for. As you say Glenn a new hobby has been invented. "I shall be in my room composing waterfalls&q…
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When I played with connmanctl and general Wireless networking on the AI I found it ran fine for a while then would seem to "do it's own thing". I think the manual system conflicts with connman and visa-versa. Perhaps see if you can exclud…
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As far as I can tell from a web search that might be a SR400AC (giving us the FCC ID: might help to check that). If it is that model, it's input is marked as 12V 3A which should give decent range of PSU's to test. If a clip on or two didn't do anyt…
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Just before swapping to something else, try a good few turns through a large snap-on (13mm) on the VDSL (incomming cable), unless it is a coax and you have something huge for that. Also the same on the supply cable to the router. I use both here, im…
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Assuming the device you set port forward on for the Kiwi is also your wireless access point, and has a web interface, I would check for a wireless section. Perhaps there are settings like "Security", "Client Isolation" or even &q…