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benson
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sdr.hu is now REALLY closed for non-amateurs
One of those less well known but excellent alternatives is directKiwi created by llinkz.
(https://github.com/llinkz/directKiwi)
The program allows you to select any of the available Kiwi receivers on a map interface GUI and get the streaming audio signal, with a mouse click you can obtain the current SNR estimate as used to be available on Marco's IS0KYB website using his micro -kiwi-waterfall routine and it shows the not so frequently updated SNR measurements from rxfanel page.
I have been using this for quite some time to find the better performing Kiwi's bypassing the obviously manipulated voting method that occurred at sdr.hu
73, Ben
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sdr.hu is now REALLY closed for non-amateurs
One of those less well known but excellent alternatives is directKiwi created by llinkz.
(https://github.com/llinkz/directKiwi)
The program allows you to select any of the available Kiwi receivers on a map interface GUI and get the streaming audio signal, with a mouse click you can obtain the current SNR estimate as used to be available on Marco's IS0KYB website using his micro -kiwi-waterfall routine and it shows the not so frequently updated SNR measurements from rxfanel page.
I have been using this for quite some time to find the better performing Kiwi's bypassing the obviously manipulated voting method that occurred at sdr.hu
73, Ben
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Browser session reset after 60 min
Thanks Powernumpty for your suggestions.
After connecting directly using an Ethernet cable between the Kiwi and a laptop the problem was still there.
Then upon closer inspection I noticed that in the additional html section of the admin web page I had entered a meta refresh instruction in order to limit refresh of data coming from an external website, which seemed to be a good idea at that time. So this problem - of my own making - is solved.
Ben -
GPS antenna trick
If your friend can have access to the roof of the building there might be better options. I had a similar situation in Taipei and managed to install an active antenna on the roof outside the view of the security cameras..hi.
Got some good results with an active whip design from the 1970's (Burhans) and a similar mini-whip design (PA0RDT) might work equally well. The building lightning protection ground worked o.k. as counterpoise.
Initially I used 40 m RG-174 coax and changed to LAN cable later which gave improved EMI suppression. For the latter some small baluns with FT-50J toroids were made. The unused cable pairs were used for 2 orthogonal active loops.
With the torrential monsoon rains in SIN waterproofing is really a necessity. In Taiwan the typhoons are an additional concern and eventually destroyed my high building rooftop installation blowing away most of it while water came running down the LAN cable even though sealed with self vulcanising tape...
73, Ben
PS: sri, quite a bit of thread drift from GPS reception -
v1.246: GNSS Kalman filter, LED brightness control
Now that many more Kiwis are updated to V1.246 I do see quite a few more station that can be used for TDoA and some at good locations for multilateration.
Locally I noticed much improved position accuracies and about 95 pct of time all tracked GPS sattelites shown as "good" for position estimates.
So I am really impressed by the work and implementation of these extended Kalman filters by Christoph and John. Thank you both.
73, Ben - SWLOI33