The KiwiSDR 2 online store is open for orders! Please visit kiwisdr.nz

linkfanel

About

Username
linkfanel
Joined
Visits
220
Last Active
Roles
Member
Points
2

Comments

  • I have just switched the markers on the map to use the new self-reported internal SNR scores. The logic is as follows: the HF-only self-reported score is used if available, if not the full-spectrum self-reported score is used instead, and if no self…
  • About the purpose of the scores, and what score to use, I think there are several use cases, or maybe several schools of thought. Some people want a measure of performance of the receiver right now, because they want to choose one to listen to a sig…
  • Interesting points, Bob, thanks! 1) I would capture the location of the user. Simply ask them or do a locate using the usual internet libraries for determination of approximate geographical coordinates. This is based on the simple assumption that a …
  • I've updated http://rx.linkfanel.net/snr.html to display the new SNR scores self-reported by KiwiSDR receivers. For now I've also kept the classic scoring. This way we can start seeing what we're talking about. It looks to me like nighttime makes a …
  • Is there any documentation (or even better - source code) available for how the SNR calculations used on http://rx.linkfanel.net/snr.html are performed? As the page already documents: "These ratios are calculated between the 95th percentile of …
  • (Quote) Makes me think of (5:47): https://www.youtube.com/watch?v=VBbCHpO9UR0#t=347
  • There are open American communities and websites of shortwave amateurs, like eam.watch, who aim to monitor, log and publish all HFGCS messages. Apparently they even use automated tools to record messages off web receivers, process them and publish t…
  • (Quote) What I was thinking about is that I'd gladly link from my SNR page to any such documentation to help people. (Quote) The current approach can work regardless of the frequencies used. However, not all KiwiSDRs necessarily cover the same frequ…
  • > I find the S/N map and rating list extremely useful, especially when trying to optimise my own KiWi's and also when trying to find KiWi's that are suitable for TDoA purposes. In fact it would be really useful if the TDoA Kiwi selection map coul…
  • > Please add terminator line and cookie support for map settings... There is already a terminator, but maybe it got lost in cache issues. I've remedied to that anyway, you can also try refreshing the page.> For example if I use map layout I n…
  • > Has he given a reason for requiring a login? Many websites seem to have done this, or at least added captcha challenges, to defend against high-volume abuse. That might be the case here. He makes some mentions of his broader motivations in his…
  • I don't own a KiwiSDR but I really feel the same frustration as you guys. I know how sometimes I struggle to get a slot on the one KiwiSDR that gets a good reception of the signal I'm trying to catch, so when I see in the user list slots taken for h…
  • (Quote) Session and restart enforcement sounds more like a server policy than a user decision. If a trusted user connects via public IP then they can log in with their credentials to get a privileged session status, so an extra parameter isn't rea…
  • Interesting idea! But to begin with, do you really need to time out sessions as long as there is still one public slot available? Then only when all public slots are full would it need to start enforcing the timeout. Also I guess it would make sens…
  • I looks kinda neat, but the subpanels extending from the middle look kinda awkward; I think that could be improved. In fact when you think about it it's already awkward on desktop, just more awkward on mobile. Perhaps the bar of tabs should be place…
  • If there's an issue with the update check killing sessions even if it's not going to update, I guess that's just a matter of fixing the check. But rather than a bunch of options for different kinds of sessions, I would suggest some heuristic like c…
  • Yes, why not? Although I'm not sure whether it should be a main element, another extension, or what, because of code re-use concerns. Since most of the functionality is already there, I imagine there could be this embedded feature to browse the Kiw…
  • JORN OTH radar from Australia - performed by linkz: (Image)
  • (Quote) I like this. I think that ideally, each KiwiSDR should push a status update whenever any of the /status info changes at all, even. In order to scale, and avoid mass periodic polling which doesn't scale, each KiwiSDR should maintain and pus…
  • Linux, at least Chrome and Firefox seem affected although the extent seems to vary.
  • I'm afraid that the current way the keyboard shortcuts work block a number of common browser shortcuts. For example Ctrl+T/W to open and close tabs, Ctrl+C/V to copy/paste, Ctrl+A, Ctrl+M to mute the browser tab (which creates unfunny interactions w…
  • > If we could reduce the 80% of poor performers down to say just 20%, then there would be plenty of good sdr's to go around. I'm afraid you're fighting against the statistical reality of Pareto distributions and Sturgeon's law. Improvement is de…
  • > according to my opinion the best criteria for sorting the receivers is how many listeners and for how long they stay to a particular receiver Here is an example of where this might not hold, going on right now on the Pardinho KiwiSDR: RX0: (…
  • I think the ability to sort your list is a nice plus, yes! I think we can use a bit of web development to add that kind of stuff, I'm happy to see people contributing to this :) Maybe it would also be nice to be able to filter on a given value or so…
  • > I like the idea of SNR stats but if you average over the spectrum you lose the actual practical frequency coverage which may be more of an antenna and location factor. Yes. I'm still considering some multi-band scoring if this can work. >…
  • > Maybe each KiWi should perform its own measurement based on this method ? Yes, I think so. There are several advantages: it's distributed, it scales better, each receiver can readily use or offer its measurement without the need of an external…
  • > What period are you averaging over and are they all sampled at the same LOCAL time on each SDR to compensate for day night variation in propagation ? For now it's not averaged over time. This was all taken from a single run of the script aro…
  • Hello, Today I bring a crude temporary page exposing my scoring attempts: http://rx.linkfanel.net/snr.html
  • > MY SDR will also be skewed by the fact that I notch out the strong broadcast bands in order to be able to run the rest of the frequencies at a higher level. Don't worry, Martin, the current crude score samples rank your receiver 13th out of …
  • > Perhaps the easiest way would be to have the central server (e.g. rx.linkfanel.net) connect to one RX at a time and run WSPR for some time. The results could then be extracted either directly from the RX or from WSPRNET.ORG. The server could…