rrobinet
I have configured several Kiwis for wifi access by attaching an inexpensive router configured as a Wifi client to the ethernet port of the Kiwi. This $25 TP Link has worked well for me:
https://smile.amazon.com/TP-Link-Wireless-Portable-Travel-Router/dp/B00TQEX8BO/ref=sr_1_14?keywords=tplink+wifi+router&qid=1548188019&sr=8-14
In principle one could enable the internal BB Wifi or attach a USB wifi adapter, but I am reluctant to fiddle with the Kiwi's OS.
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The noise graphs generated by v2.7 are no longer displayed by wsprdaemon.org Also, in v2.7 there are some log files which for MERGed configurations can grow to overflow the file system. Go to http://wsprdaemon.org for more information and links to a…
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Hi Ulli, You seem to be spotting well, so it seems those warnings can be ignored. Rob
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I have just learned that the merged log files grow unbounded. That is fixed in v2.8 which should be available in a few days. Until then, reboot your Pi any time 'df /tmp/wsprdaemon' shows that file system is getting full
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I think this thread has veered far away from Wifi and this important topic deserves its own thread. Since my remotely controlled battery powered sites KPH and AI6VN/KH6 could not endure the inefficiencies of linear supplies, I found a $1 postage st…
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There is a bug in v2.7a in which WD fails to install the Linux 'sox' utility problem. Legacy sites will have sox already installed, so they are not affected by this bug. 'git pull' will download v2.7b which fixes this problem
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I have used connman to configure many Kiwis, although occasionally I need to re-execute it after days or weeks of successful wifi operation
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In 2.8 my goal is to support all SDRs which are compatible with the CubicSDR application program which utilizes the SoapyAPI library to communicate with a wide range of SDRs. While I am close to finishing debugging that feature, higher priority pro…
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In V2.8 I am working on much improved support for RTL-SDRs and all other SoapyAPI-supported devices. You have stimulated me to add study of noise calibration to that effort.
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Hi Jim, In 2.7, WD caches spots in ~/wsprdaemon/uploads.d/... and every odd 2 minutes it tries to upload a block of no more than 200 spots starting with the oldest spots in the cache. I set these limits so that WD clients don't swamp wsprnet.org a…
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The KPH site was selected by Dr. Beverage in 1920, so it should be exceptionally quiet. However we have found that our nearby suburban stations using short well balanced active dipoles can receive as well as KPH at LF/MF. Eliminating RFI introduce…
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I don't know the cause of that problem, but I will look into it. I am also working to migrate our use of Grafana to a wsprdaemon.org server where I will have direct control of it.
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Thanks for the feedback. I will clarify the use of 'wd' and alias and add further cleanup to the installation instructions. As for the plotting problems, here is more information than may interest you on the cause. v2.7 adds c2_fft data to each l…
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I have just published v2.7a to github. It adds persistent storage of spots and noise data through reboots and power cycles and uses very little extra CPU cycles to calculate noise. A Pi 4 should easily support plotting noise on 30+ bands.
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Your configuration looks reasonable, but I wonder about the accuracy of the NEC model of the Beverage. At KPH I have used the gain numbers reported by my NanoVNA https://www.amazon.com/NanoVNA-Network-Analyzer-50KHz-900MHz-Antenna/dp/B07TMV17TP for…
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It isn't clear to me how you are instructing WD to adjust the noise levels on your various receivers/antennas/bands. Can you share the conf lines? I would expect that your 170M Beverage on the 10M band would be configured for a net of +9 dB gain a…
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Hi Ulli, I use a DXE/Clifton LNA at KPH to compensate for the 10 dB loss introduced by the 8-way splitter feeding Kiwis 73-77. The net gain of about 10 dB from TCI-530 feed to Kiwi SMA input which helps overcome the poor 20 dB NF of the Kiwi on the…
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Yesterday I started beta testing V2.7 on many of the sites which contribute to the Influx database. That new SW by default uses an new and much more CPU efficient way of calculating the FFT noise, but apparently it fails to upload that C2_fft value…
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This is the best site I have found with information about Beverages: http://w8ji.com/beverages.htm I have been surprised about the > 10 Mhz performance of my 100M Beverage in Maui, but I put an AM blocking filter and a +23 dB gain LNA in front o…
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The local sunrise and sunset times are calculated by WD translating the Maidenhead grid you specify for your receiver in the conf file to a lat/long. Those lat/long values are passed to the python program /tmp/wsprdaemon/suntimes.py which uses the p…
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At KPH I fabricated a simple RC HPF in front of Kiwi78: 100pF in series with the feed results in approximately a 15 MHz HPF with only 6 dB per octave below that. But that attenuation is enough to almost eliminate the overload conditions which Kiwi…
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WD -V (capital V) will print the version number of yoru WDS "sudo systemctl status wsprdaemon" will show info about status "sudo systemctl enable wsprdaemon" will ensure that WD is started at server boot time. I will add a comm…
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Yes, a reboot or power cycle rebuilds the /tmp/wsprdaemon tmpfs under which all of WD's temporary files are kept. There are a few small status and log files kept in ~/wsprdaemon, but only 'wsprdaemon.log' could grow large, and that only when WD is …
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Hi Basil, I have tried to clarify that title by changing it to: "Installation on a system running wsprdaemon that was not installed using 'git clone'" Perhaps WD has overflowed the Pi's file system. While working on V2.6* I have added …
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Hi Ulli and Martin, Thanks for those great observations. KPH is a maritime communications station and the TCI-530 is the appropriate antenna for that application of contacting nearby ships at sea. There are a couple of unused V beams at KPH which…
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Hi Ulli, Thanks for your KPH report. Yes, all the KPH Kiwis 73 through 78 are fed by the same TCI-530 antenna, while Kiwi78 gets an extra 10 dB RF gain on its input. You can see the WD listeners listed on Kiwis 72,77, 78 in the Kiwi's 'USERS' win…
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In v2.7 WD will log that table for all MERGed devices but limit the size of that log file
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It seems to me that you would want to add 'DEFAULT:17' to your config lines so that WD will add 17 dB to its noise measurements and thus compensate for the -17 dB Antenna Factor of your Beverage I have not yet understood how we measure the gain or …
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It is rewarding for me to have users of this feature.
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I owe to Jim the suggestion to implement this important MERG feature in WD. Here is a fuller explanation and example of the use of MERGed receivers: 1) MERG_K0_K1 merges the spots decoded from KIWI_0 with those decoded from KIWI_1 2) MERG_K0_A0 mer…
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Since the GPS fixes completed in v1.335, the Kiwis at KPH have been accurate and stable to under 1 hertz at 14 Mhz (<.1 ppm) when tracking 8 more more satellites. To verify that accuracy, I use the 20M ground wave transmissions of K6PZB which are…