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G8JNJ

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G8JNJ
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  • OK thanks John, Now I understand teh controls a bit better, I'll continue trying different settings. Regards, Martin
  • With regard to the audio delay, which I accept can be an issue under certain operating conditions. Some time ago I measured a few well known SDR's using this method. http://forum.kiwisdr.com/uploads/841/GM1H5DMATTS4.png Airspy HF plus local PC http…
  • Most voice signals tend to be found on frequencies rounded to a minimum of 1KHz (maybe 500Hz on occasions) so I don't find it too difficult to tune to those, even when almost fully zoomed out. CW with narrow frequency spacings is a different matter,…
    in Tuning SSB Comment by G8JNJ October 3
  • >I am an electronics engineer with over 50 years experience with communications receivers. I don’t >deserve or appreciate condescension from some people on the Forum. Unfortunately, you initially only gave a brief list of issues, with very lit…
  • Hi John, "spectral leakage suggests B-H has the property of raising the noise floor slightly in exchange for improving the leakage issue." Maybe if B-H is supposed to have these drawbacks, the existing Hanning & Hamming parameters cou…
  • Thanks John :-)
  • - Recommended Wellbrook loop ALA1530LN is a poor HF antenna. Resonant antennas should be used on HF. I think you may be approaching this from the wrong angle, or be lucky enough to have the space to erect large antennas. The KiWi is a broadband 0-30…
  • I always find it interesting that different people have different experiences when using the same product. I guess a lot depends on what you are using the KiWi for and how you are using it. And in this case the points raised differ from my observati…
  • Hi John, OK no problem. It's not really an issue, I only mentioned it in case it was related in some way. Regards, Martin
  • Thanks again John. I noticed another occasional 'oddity where the popup passband width frequency markers don't appear when you remove the DX labels banner using the Y command, but I don't know if this is related or something else. I only noticed thi…
  • Hi Josef, I quickly tried experimenting by adding combinations of mode and passband to individual frequencies in ALE url string (as defined in the user guide for other non ALE modes), just in case this would work, but I didn't have any luck. I can't…
  • Just noticed that the mark / space vertical markers don't move with the receive passband either. If you shift the waterfall left or right, the markers stay in the middle of the spectrum. Unfortunately, I think this is a new bug. Sorry, Martin
  • Update. If I close the browser sessions once the KiWi has stalled, it recovers almost immediately. Leaving the browser running it takes about 2 minutes to recover. Regards, Martin
  • Hi John, Great improvements, very, very much appreciated. This just reinforces my view that my KiWi's have been among the best radio related purchases of all time, and they are definitely well up in the 'top ten' of my 'hit parade' chart. Thanks aga…
  • Typing errors - easily done Try Taiwan (Taipei) #1: (1.465) http://jplin53a.proxy.kiwisdr.com:8073/?ext=ale,4216.25,6281.75,8396,s:1.5 Hokkaido (1.465): http://sdrhkd.ddns.net:8073/?ext=ale,4216.25,6281.75,8396,s:1.5 Chongzou (1.465): Not available …
  • Hi John, Yes that fixed it. Thanks again. Regards, Martin
  • One small bug (possibly). I've found that if you have opened a session using a url string and that remains in the browser, it may not be easy to switch to another predefined scan. The url scan seems to override anything else. I have to halt the url…
  • Hi John, Thanks for adding the url string capability so quickly Absolutely brilliant :-) Regards, Martin
  • "Likewise when it appears that no activity occurs at all on some lists these would perhaps need to be dropped or modified at some point." Yes I had wondered about somehow creating an automatic activity log list that could count the number …
  • Ah wrong menu - RTFM The Kiwi owner/admin can define the contents of a custom menu on the Admin > Extensions > ALE_2G page. JSON format is used. User's cannot currently define their own menus, but suggestions for the downloaded menus on exte…
  • Hi Ben, I just tried ?ext=ale,3000,4000,5000,6000,scan:1 But no scan occurred. I then tried ?ext=ale,3000 The extension opened but didn't tune to 3000, so I assume for the url to work the parameters have to be pre-defined in the extension. I've tri…
  • Hi Ben, I was thinking of making it easier to bring up pre-defined scans by using stored browser bookmarks, or url strings especially if monitoring as a guest as you mentioned. It's basically adding scan some defined frequencys to the current ALE ur…
  • Someone has mentioned loosing the logged signals when the KiWi times out and goes to the splash screen. A similar thing has happend to me when using other extensions such as SSTV. Is there any way to allow the KiWi's last view persist in the browser…
  • One other thing I discovered today The SSB receive passband needs to be set correctly. Maybe the ALE extension should change the filter bandwidth to some default valued best suited for ALE. Regards, Martin
  • Hi John, Would it be possible to setup your own scan list by means of including frequencies in a suitable url string ? This may be a quick way to implement personal lists without having to provide them in the GUI. Regards, Martin
  • One ALE session running. Opened second session using same browser. Stats. 4:30:21, v1.463, 4 SDR ch, 12 GPS ch GPS acq yes, track 1, good 0, fixes 0 WF 7 fps Audio 48.2k, Qlen 6 BB 64,8,26 usi% 1.0 GHz FPGA 7% Net aud 6, wf 7, http 43, total 70 kB/s…
  • I tried one of my remote KiWi's and started a session with my Win10 PC then set an ALE scan running. I then connected a second session using my iPad, and as soon as I started the ALE Extension the iPad waterfall froze. The other session on the Win10…
  • Updated to v1.463 tried using Firefox, Chrome and MS Edge under Win10. KiWi in 12 and 8 Channel modes. Open first KiWi session and start ALE scan. All OK until I open a second session. All waterfalls and spectrum displays freeze, but audio and scans…
  • Hi John, I just chose the Govt US Cothen scan list and let it run. After a while it found this active frequency, but didn't recommence the scan. The waterfall and everything else was still running OK. I'll leave it running today and see if it happen…
  • Unfortunately the bulk of ionospheric sounders these days seem to be digital. A list of stations can be found at http://digisonde.com The two linear CWsweeps that can be observed in Europe most days, I believe originate from the UK Military site in …
    in Ionosondes Comment by G8JNJ September 11