What is the cause of the "W" shape in my lightning signal? Is it real or is there a resonance in my antenna? Sometimes there are more cycles but the spacing is consistent, around 10 kHz. I don't see this curve in any articles about lightning physics, though some show oscillations but very rough.


I have seen this curve in other nearby station's data but I do not know their antenna setup. I have 4 turns on a 1-meter X-frame, no transformer, directly connected to the external H-amplifier. Turn spacing is about 2 mm.


Because of bad noise I have the low-pass filter installed, but I have seen the same curves without the filter during lucky stretches when the noise stops.


All the strikes are 2500 km or more from me, so maybe the curve is explained by different frequencies taking different paths. I will have to wait until summer to see the shape of closer strikes.

I will try to attach an image from lightningmaps.org


Jim Lucke
Saimaanharju Finland

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An interesting article!


http://journals.ametsoc.org/doi/10.1175/...14-00193.1

http://journals.ametsoc.org/doi/pdf/10.1...14-00193.1


/Egon

Hi,
I assembled the station, System Blue, firmware 8.2_Blue, but GPS reports: Availability: 100% Type: Unknown, 115200 baud rate. Did not get valid data from GPS for ... (Debug log: Buffer overrun - Didn't receive GGA/RMC sentence)
In addition I can't see Station Id and User ID. They are both "0".
What should I do?

Thank you in advance

Steela85

Hi guys,
i have red, my station is 1127 and in screen i see this message: vin too low

And in my webpage i see this message: Interference Mode (Burst) in Tracker.

I have FW 8.2 PCB 10.4/12.3

In map my station appear at red color, active / no reception.

Any idea what is problem?



Thanks guys.
Kind regards,

Hi everybody,

Since a couple of days my System Blue, PCB 19.3, locks up sometimes and it is making a constant chirping/whining noise.
The noise seems to be coming from the three large coils near the power LED.

Is this normal?

update: I swapped the usb power supply. the old one was generating 4.00V, the new one, 4,96V. The sound is less noisy, but still present... I downgraded to fw 8.2, from 8.3b2 too...

Hi

When I open the link provided on station UI I get the following error

Internal Server Error :: Code 500

Are there any other ways to register the station? Is it something temporary and will be fixed soon?

When I open the link provided on station UI I get the following error

Internal Server Error :: Code 500

Are there any other ways to register the station?

Hi

Last night I finally got around assembling the System RED that has been sitting on my shelf for a very long time now. (Really sorry about that. Reason: children)

The Atmega8's are off the shelf (not kit ones) and I'm guessing that they have to be programmed but I cannot find any information about this in the documentation or in the forum?

Hi guys I have some problem with my system blue. 
In admin control panel I have this message :
You need to Save to Flash and Reboot to take effect some of the new settings! 
If I click on save button and reboot,  the system has the same message. 
I have the 8.2 firmware. 
Another problem is that the System blue often emits a long beep and the LAN LED disappears. 
I have to turn it off and on again to unlock it.
Can you help me?
Thanks in advance

excuse for my bad English

Hi folks
Is there somewhere a detailled manual/description available for the controller interface (Blue system)? 
Examples: What is meant by Error "Overflow"   or what does the parameter "HP on" flag in the amplifier section mean   ?
Thanks for any clearing up hints.