jks

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jks
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  • What iPhone model, iOS version and browser? I only have an old iPhone 10 running iOS 16, but my keypad has the "." not "+*#". We went through this debacle of Apple changing the HTML-to-keypad mappings some time ago. I swear, if t…
  • @studentkra Yes the current is low. But the cost of devices with low (1.2, 1.0, 0.8) Vcc supplies is typically high (advanced FPGAs, CPUs). I wouldn't risk possible problems with the breakdown voltage of ESD diodes on low voltage pins. See eevblog f…
  • Try the board using the BBG of the Kiwi-2. You're very unlikely to hurt the BBG from doing so.
  • So I was wrong about the "too_busy=N" message (I can't remember how this stuff works anymore without looking at the code). "N" in this case is a count of the number of available channels. But N is context dependent. In the case o…
  • Also: DON'T EVER use a multimeter to measure the resistance of FPGA low voltage power inputs like the Kiwi 1.0 and 1.8V regulator output test points. The multimeter has a source voltage in resistance mode that will likely exceed the maximum allowed …
  • Did the Kiwi board ever work before being used in the AI64? Like with a BBG? Did you follow the AI64 installation instructions avoiding the extra P9 connector pins? Because if you didn't the Kiwi board is likely destroyed: https://forum.kiwisdr.com/…
  • @XPloRR Well, difficult to say. http://wessex.hopto.org:8075 is not a genuine Kiwi device and is running very, very old software (v1.690) compared to the latest release (v1.823). The message "too_busy=" should only ever be issued if the va…
  • If you're using Starlink you need to use the Kiwi proxy service. This is because Starlink denies external (i.e. Internet) connection initiation, just like many ISPs do. NAT does not help in this case. If you have a Kiwi-2 the proxy is configured by …
  • All I got out of that thread was "82 year old codger" and "AI hallucinations", both of which I can relate to (lol). Actually I think I know what the problem is (amplitude imbalance). But I can't test until tomorrow.
  • You have a Kiwi-1 stuck with very, very old software (v1.665). You will not be listed unless you can get updated to a more recent version. Please email support@kiwisdr.com. We need to get you on the proxy service so I can connect and get your Kiwi u…
  • Okay, but now G4SDG has faded up to -18 dB according to WSJT-X. And the Kiwi WSPR autorun decode count went from 12 to 13 during that time slot. So it worked at that signal strength. I think this confirms what's going on.
    in MF WSPR Comment by jks October 19
  • I was able to camp onto a channel of your Kiwi that must be piped to WSJT-X given the dial frequency of 474.2 shown in the camp display (there were no free channels for me to connect directly). WSJT-X running here on that camped audio found G4SDG at…
    in MF WSPR Comment by jks October 19
  • But also, the decoder in WSJT-X is superior to the one in the Kiwi. Why? Two reasons. The Kiwi decoder was derived from a version of WSJT a long time ago. There have been many improvements to WSJT-X since. And the computing power of your average pc/…
    in MF WSPR Comment by jks October 19
  • Maybe because of a difference of offset frequencies. By default the Kiwi WSPR decoder is configured to use a 750 Hz offset. WSJT-X uses 1500 Hz. So if you have the Kiwi WSPR running using its dial frequency of 474.95, but then tune the Kiwi to a dia…
    in MF WSPR Comment by jks October 19
  • I should also mention, re your earlier query about VHF/UHF Kiwi, that a reason to detect and respond to dynamic changes in the offset is because it is possible for this to be set in the antenna switch configuration. So that a user connection could s…
  • First of all I did not write the squelch code, so I can't say exactly how it works. But it was originally designed for the NBFM modes. So using it outside that context is perhaps a bit problematic. I think it tries to compare energy at and above typ…
  • That IPv6 address is also from [proxy.]kiwisdr.com (see below). The Kiwi server code does a DNS lookup on kiwisdr.com to cover the case of kiwisdr.com moving in the future (the IPv4 address is hardcoded to be used as a last resort). So on IPv6-only …
  • Ah, of course, DAB+ in Europe. Thank you for that.
  • I don't think he has very good front end filtering on that downconverter. That 120 MHz signal is almost certainly an FM broadcast band image. It is 100 kHz wide and the audio clears up slightly in AM mode when you tune off to the side (AM slope demo…
  • The first one you mention is not a true Kiwi, but a clone that runs very old software (v1.690). So it probably has API compatibility issues. I do not provide support for clones. And, sadly, they don't seem to either (the clone forums are full of peo…
  • kiwisdr.com currently = 50.116.2.70, but this will change if it ever migrates due to upgrade or something. Can't you just do it by domain name? The other one (forum.kiwisdr.com) is not really necessary for this problem.
  • Hmm. Looks like you're getting hosed by your CDN. kiwisdr.com does a curl https://iz6byy.k1fm.us/status every 45 minutes to decide if your publicly-listed Kiwi is running or not. When I do this from my home IP it works fine and I get the expected re…
  • I reworked the timeout values on the TDoA server so that you will get the correct "Timeout: excessive runtime" error message if the TDoA processing is taking more than 2.5 minutes (150 secs). The Kiwi user side code has a 200 sec timeout w…
  • You say "six-receiver channel mode". Do you mean the 8-channel mode where only rx0 & rx1 have waterfalls and the other six get audio FFTs? The SNR measurement routine requires a waterfall-capable channel. I tried it just now in 8-ch mo…
  • In the next release I am changing the default of "acquire if busy" to be checked (enabled). This change will only affect new software installations, i.e. not change an existing configuration in case someone has explicitly set the value.
  • Not quite correct I see after reviewing my notes and checking: z11+ (overlapped sampling) is always slower than z10. It's just that z10 is worse than z9 because of the boundary problem. Example: On BBG & BBAI-64, single channel active, z9 is 23 …
    in v1.822 Comment by jks October 10
  • Hi John, Yesterday I found the kiwisdr.com web server, on which the public registration and TDoA services run, in a somewhat broken state. The CGI service, which responds to TDoA processing requests, was clogged up with TDoA processing tasks that we…
  • What happens when you try to access the sampling and reference station lists directly from a browser? http://tdoa.kiwisdr.com/tdoa/files/kiwi.gps.json http://tdoa.kiwisdr.com/tdoa/refs.cjson
  • Not new with v1.822. Zoom level 10 has always been this way. It's a little slower than z9 before it and z11 after. This is because it's right on the transition to overlapped sampling with z11. And the realtime constraints get in the way with z10 suc…
    in v1.822 Comment by jks October 8
  • There is a setting on the admin / extensions / TDoA tab to prevent your Kiwi from accepting TDoA connections if that's what you want.