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  big lightning storm seen from space
Posted by: davidsaroff - 2017-05-15, 16:18 - Forum: General Discussion - Replies (6)

https://apod.nasa.gov/apod/ap170515.html

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  Let's talk in Persian(Farsi)
Posted by: Noodi - 2017-05-14, 14:21 - Forum: Non-English - No Replies

Hi,
I thinks there are not too many Persian users here, I saw some reservations from Afghanistan, Armenia and Turkey, So feel free if you want to talk in Persian/Farsi here.
This topic has been started according to these two posts: First - Second
So now just lets say Hi and try to talk about blitzortung.org in middle east Big Grin Heart Cloud Lightning


[Image: YB4SOSs.jpg]
-


سلام دوستان عزیز
امیدوارم حالتون خوب باشه Heart 
فکر نکنم کاربر فارسی زبان اینجا زیاد باشه، فقط توی لیست سفارش ها چند تا سفارش از افغانستان و ارمنستان و ترکیه دیدم، اگر دوست داشتید میتونید اینجا به فارسی سوالاتتون رو بپرسید
خوش حال میشم اگر کمکی از دستم بر بیاد انجام بدم Heart Cloud Lightning

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  Cartography and funding (empty zones)
Posted by: Kellogs - 2017-05-14, 11:50 - Forum: Hardware, Software, Lightning Physics - Replies (2)

Dear Friends,

In my spare time I am contacting user groups, communities and interested people to point out the importance of Blitzortung lightning detection projet. I am interested in filling "empty zones". This is quite interesting as empty zones cannot be filled "immediately" and several stations are needed (as well as hardware in some case). It means that we shall encourage people to work together.

Here are my questions:

1) Coverage map

The list of stations is available here.
http://en.blitzortung.org/station_list.php

Is there a raster map available somewhere with zoom in-out to visualize approximate geographical coordinate of stations.

2) Grid
Are you planning to define an official grid where there should be at least 1 to n stations in the grid.

This will help user in their settings, detecting low-range or long-range lightnings (stop me if I am wrong).
It could help amateur meteo with statistics.

Also it could help me target zones where it would be nice to have new users.

If there is no grid approach, please let met propose a solution and set-up my own raster server.

3) Funding

If you need funding, I may be able to help. I know you are not looking for money and this is a hobby. But it might be interesting for certain zones (ex: Africa or South-America) to find a sponsor (company or organization) that would install an initial network of 10 to 50 stations, pay for hardware, just for a good start. If you are interested, please let me know and I can contact you privately. I don't need to collect the money, companies or organization will purchase directly from you.

I am French and I speak German also.

Kind regards,
Kellogs

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  System Blue !!!
Posted by: KraftDie - 2017-05-14, 10:59 - Forum: Non-English - Replies (10)

Hallo zusammen

Ich hab mal eine frage zum thema Blue?? Gibt es eine Möglichkeit an ein fertig aufgebautes System inklusive Gehäuse zu kommen, meine lötkünste sind definitv für sowas nicht geeignet  Big Grin  Tongue Big Grin Tongue   
Vielleicht hat jemand'nen Tipp wäre echt superklasse....
Aktuell läuft meine RED zwar ganz gut hab aber irgendwie bedenken das ich mal zum alten eisen gehöre.....

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  Iranian and Farsi speakers, please post here (in English)
Posted by: Kellogs - 2017-05-14, 10:48 - Forum: General Discussion - Replies (4)

This is a dedicated forum post here for people from IRAN.
When they are enough users, we will open a direct link to website/forum in farsi.

**************************

In reply to:
https://forum.blitzortung.org/showthread...1#pid14531


Thank you Nodi for contacting us.
This was my post on RIPE forum, thanks for catching it.

This is great to have you on the forum and discuss about lightning detection in your country.

I double-checked and restrictions from E.U. to Iran are over:
http://www.consilium.europa.eu/fr/press/...sanctions/

Please make sure there are no restrictions with customs while importing (on Iranian side) and try to look "in advance".
About Iran, keep in mind that there should be at least 4 stations in the country. After installing first station, we encourage you  to help installation of other stations to go quickly. It is discouraging for people to see a station running during years without success. We encourage you to start a small web page and try to aggregate people around you and maybe research institutes. After 3 or more people register, we can link to your forum or webpage. Use Facebook or equivalent and try to create a small group of interested people

I am rather new on the forum, but I read that Egon had hardware in stock for empty zones.
Maybe he we pick-up your request ... I am not in his shoes.

Welcome on board anyway.

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  Wikipedia page (minimal)
Posted by: Kellogs - 2017-05-13, 07:14 - Forum: General Discussion - Replies (2)

Dear friends,

I added a minimal Wikipedia page, which is presently under review:
https://en.wikipedia.org/wiki/Draft:Blitzortung.org


If / When research institutes query the WWW, they will probably look at a Wikipedia page.
Please note I am not a wikipedia editor, so if you feel something should be added to the Wikipedia page, feel free to add it.

Kind regards,
Kellogs

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  Definition of a good noise-free site for BlitzOrtung probe
Posted by: Kellogs - 2017-05-12, 22:38 - Forum: General Discussion - Replies (5)

From my understanding, the probe should be at least 10 meters away from any electrical equipment.
I am planning to put the probe on top of an old building.

My site is on the French country side, in a very rural area, but :
* I don't have a clear view on sky, because of a small hill. Does it matter?
* I can view a 4G mobile phone emitter, 5 kilometers away. Will it spoof the probe?

Kind regards,
Kellogs

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  Device security (against hacking)
Posted by: Kellogs - 2017-05-12, 22:30 - Forum: Hardware, Software, Lightning Physics - Replies (6)

Dear Friends,

Just a stupid question about network security before ordering a probe:

Did you implement network security against hacking the firmware?
Is firmware publicly available and Free software?

Kind regards,
Kellogs

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  Collaboration around the world with GNNS ground based stations
Posted by: Kellogs - 2017-05-12, 20:22 - Forum: General Discussion - Replies (5)

Dear Friends,

I am new here and first and I would like to congratulate you for the BlitzOrtung project. There was lightning in my area in France and I just discovered the project using Android BlitzOrtung project. It is great to see such a well-organized community project.

So my question is as follows: there are Billions of euros lost in lightning every year. Still, a large number of areas are not covered by BlitzOrtung around the world.

There are similarities with other projects. For example ground based GPS (GNNS) and differential GPS (RTK). Differential GPS are precise GPS stations providing positioning data. Some GNSS stations are located remotely in noise-free areas all around the world. And all of them have Internet access. Most of them are run by scientists, for example in observatories or meteorological labs.

Maybe ground GNSS stations would be interested to host a BlitzOrtung receiver. GNSS stations are usually organized in communities. So we know the precise positioning of each station.

Here is a partial map. In fact, there are way more of them:

[Image: Veripos-network.jpg]

Here is a list of station networks that could become partners:

EUREF Permanent GNSS Network
Based in Belgium. 
http://epncb.oma.be/_networkdata/stationlist.php
All network is extreme quality.


In 2015, Africa had 54 ground-based GNNS stations:
http://www.swpc.noaa.gov/sites/default/f...A_2015.pdf

Brasil: IBGE Brasil
www.ibge.gov.br/home/geociencias/geodesia/estadual.shtm
Brasil map for GNNS with hundreds of receivers (I guess so, but I don't speak Brasilian):
ftp://geoftp.ibge.gov.br/informacoes_sob...aduais.pdf

French Guyana
Think about IGN or Arianespace.

Glonass stations (not official list)
http://gpsworld.com/tag/ground-station/
or from ESA:
http://www.navipedia.net/index.php/GLONA...nd_Segment


Do you think it would be valuable to list all possible GNNS stations worldwide and try to contact them? Some of them should have direct interest to install a BlitzOrtung detector, just for safety of equipment and protection against lightning.

Maybe this was discussed before, but what would be the perfect grid for precision reception?
Can you describe it? How many sites would you need in South America and Africa?

Kind regards,
Kellogs (Jean-Michel P., France)

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  Noise hunting
Posted by: tkerby - 2017-05-07, 21:32 - Forum: Hardware, Software, Lightning Physics - Replies (3)

I'm finding I'm getting exactly 100 triggers per second on the H field antenna and I think it's down to house wiring as turning it so that it's 45 degrees off parallel with the x and y axis of my house reduces the noise. The auto amplitude filter is effective and cancelling out +/-47 and +/- 141mV

Antenna is a coaxial möbius with a 50 turn transformer. Settings below. Any thoughts?

  • ModeAutomaticNoise AdaptionAmplitude Filter
  • SignalsReceived: 396404, Good: 14969, Sent: 13692
  • Signal RateLast second: 100, Last 60s: 99.6
  • ErrorsNo GPS: 0, Overflow: 0
  • StatusNormal
  • Server , Region 1
    10.6MByte, 3% Compr., 13692 Packets, 812Bytes each

Amplifiers
[Image: new.png]
Amplifier 1 - H0[Image: edit.png]
  • Channel A
    • Trigger-37mV/91mV, reached 20 times in last 15m, 54s

    • Gains10 * 10 * 40 = Total Gain 4000 | Relative Gain 6349 (99%)

    • Noise47mVpp

    • Lowpass Filter30.5kHz

    • Auto Ampl.Filter amplitudes around 47mV

Amplifier 2 - E0[Image: edit.png]
  • Channel A
    • Trigger-44mV/82mV, reached 95291 times in last 15m, 54s

    • Gains10 * 10 * 40 = Total Gain 4000 | Relative Gain 6349 (99%)

    • Noise35mVpp

    • Lowpass Filter30.5kHz

    • Auto Ampl.Filter amplitudes around -141, -47, 141mV

ADC
[Image: new.png][Image: edit.png]
  • Sampling per InputResolution: 12bits, Period: 666ns = 500.0kSPS, Time: 2000ns
  • ADC1
    • Input1Amp-Channel 3 , Offset 27mV, no Trigger

    • Input2Amp-Channel 4 , Offset 19mV, Trigger -63mV/63mV
  • ADC2
    • Input1Amp-Channel 2 , Offset 24mV, Trigger 0mV/0mV

    • Input2Amp-Channel 3 , Offset 27mV, no Trigger
  • ADC3
    • Input1Amp-Channel 1 , Offset 27mV, Trigger -64mV/64mV

    • Input2Amp-Channel 2 , Offset -169mV, no Trigger

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