Ulli
About
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- Ulli
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Comments
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Rob, I again get the mentioned errors in the log file as informed February 8th (see above) What should I do ? It keeps popping up in wsprdaemon.log... Ulli
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Access to the noise plots at the Grafana website seem to require a password, now. How to get a password for the Grafana Noise plots ? https://grafana.int8.com/login Many thanks.
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Rob, many thanks you take the time for some information... Ulli
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Rob, please excuse my stupid question (really no computer geek!): "In V2.8 I am working on much improved support for RTL-SDRs and all other SoapyAPI-supported devices." Does this mean, I can use my Elad FDM-S2 or my old QS1R receiver wit…
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Interesting observation Glenn about polatization. At least you need the sensitivity to hear it at all. I still believe that elevation angle may play a role too, so I do not know, why polarization should make so much difference. When I lived in th…
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Martin, I have studied the noise plots briefly on the Grafana site and have a few remarks. - I think you are far too optimistic about the efficiency of the 'loop-on-ground' antenna at higher frequencies (>10Mhz). To me , it is very clear, that N…
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Chris, if you want to try the antenna, I would recommend to plan two of them - so you can switch direction and find out the behavior, which is very useful for judgement. I know you also listen a lot outside the Ham-bands, like me. (SWL). Today du…
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To Chris: "....Do you have a sketch / drawing of the wiring and connections? ..." Does this help ? (Image) At the feedpoint you need a step up transformer and also I would install a current choke - for receive only this can be very smal…
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One more comment: In the SWR picture above, note the very effective "natural" MW-BC filter of the antenna. With a length of approximately 2x 40m the V-beam becomes an ordinary dipole on 160m with low impedance, so SWR is already not good …
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Unfortunately everyone has PLC, except me... I will try to replace the antennas 300m further out on the farm fields, which I may use during the winter. However from mid march the agricultural work begins already, so this will be for next season. The…
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here is the picture from the VNA with the SWR plot (Image)
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Yesterday I changed the V-beam to a more useful direction - instead of 120deg azimuth (indian Ocean, East Africa, Middle East) the wires are now turned so main heading of the antenna is now 30deg for far east Asia and Pacific / Japan I remeasured t…
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How did the antenna work ? Did you win the sweepstakes ...hi? I am planning exactly, what you describe to make in coming summer. However my center mast will be only 12m... (strong fiber pole)
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"Drooping wires will negate gain... be careful of that" that's very correct, but for antennas purely for reception the pattern shape is much more important than gain figure! Below 10Mhz with my 2x41m terminated V-beam there is not gain (o…
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You are correct, Martin. Polar Ice' is no ground at all. That's why wire directly on polar ice, might work like a 300m high long wire, if the ice is thick enough....hi However Davis station seem to be not on top of 300m thick ice, but the foto's on…
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Additional Info for my kiwi-SDR, which is online (see my earlier post) with the new V-beam antenna: I have now placed a 16db pre-amp at the feedpoint of the V-beam antenna for frequencies above 10Mhz. The amplification slopes up, when frequency is …
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Many thanks for info.... next time, I will keep it running, in such " server down' event... Some interesting information: I am testing a new antenna, comparing it with the beverages. It works very well so far! I really recommend it to build, e…
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Now it works! I deleted all the old spots WD decoded, but could not upload because of the server problems. Now as the server works again WD wanted to upload hundreds of spots from WD.... that was the reason WSPRnet.org, didn't liked me...hi. The ser…
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but there is a problem, that spots from WD Vers 2.7 are not accepted from WSPRnet.org anymore. What is going on - it seems that WSPRNET.org doesn't like Wsprdaemon script and blocks the Curl-uploads... No spots from OE9GHV either (check the VK7JJ …
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It seems wsprnet.org is down, already the whole day ? Does anyone know details ?
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About the Noise graphs on 160m: I notice the big difference of noise level at the kph site on 160m at daytime and nighttime. However it can be seen, that the noise level difference is lower with the vertical marconi antenna. So yesterday I kept bo…
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Is there any problem with the Grafana site to view the Noise graphs in more detail ? Of is it my computer with a problem ? It shows 502 error = bad gateway.. with no data
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I restarted Ubuntu (so complete reboot) and the error messages have not popped up again... may be some old data (after updating wsprdaemon) caused the error messages... I should better look also for a raspberry PI mini-computer. Still running the A…
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Rob - great, I can see the Grafana FFT curve again after upgrading... However WSPRDAEMON.log throws some errors regularly: do I need to 'repair' something ? ----- ... Sat Feb 8 07:29:06 CET 2020: let_kiwi_get_gps_lock() kiwi 'NW_170mLW' reports '…
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need to switch back to the Beverage wires! No other antennas left for the moment - Reason: We expect starting sunday (peak in late evening) a potentially desasterous storm with windspeeds well above 120km/h - local weather channel with active warnin…
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Today, I quickly compared the noiselevels of my 2x3m vertical active dipole with a different but known dipole (2x1m). The antenna factor of the shorter dipole has been calculated with LTspice and though the gain can be calculated for each band. From…
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"Finally, your 'RAW' versus "SPOTS' on Jim's site http://www.wa2zkd.net:8088/today_int.html suggests that you aren't using WD for all your spotting and thus double spotting to wsprnet.org. If that is true, what motivated that setup?" …
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Rob, - Beverage wire gain (according to 4Nec2 with Nec2 engine) has indeed 9.5dbi gain at 2.5m height - From the beverage wire there is a imp-transfo to match to 50Ohm - it is compensated for small reactance, so SWR on 10m is now 1:1.2 roughly... a…
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I now have the Northwest wire installed with a pre-amp directly at the feedpoint (after the impedance transformer). Then 200m of coax (about 9db loss) to the shack follows... The 170m wire is at 2-3m height and points straight towards W6/W7. With op…
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Thank you Rob, for your great work and effort - I really enjoy playing with the kiwi with WD... Rob, do you use pre-amp at the feedpoint of your beverage in KH6 ? I recommend it, because the ant becomes very useful on high bands as well... From abo…