today I installed the four digital lowpass filters. The noise floor droped from 110mV to 50mV,  Which allowed me to raise the gain to 16X10 with no problem. I`m running in manual mode. I`m testing yet the best value for LPF tune, but seems to be around 50KHz. I have the LPF tuned in 25Khz and monitoring the spectrum but I can`t see advantage  in relation to 50Khz. I have a lot of militar stations in VLF with very strong signals (about 75 or more dBuV) between 15KHz and 60Khz which occupy part of spectrum, but apparently without causing problems.  I`m able to tune and measure this stations on my VLF receiver R&S EK070, with an R&S EH10 active antenna. I also took 4 outputs on the back panel to connect the oscilloscope.
I think the lowpass filters were a good investment, but I have to wait some more time to check the operation.


Station ID 1846

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Hi all,

Have you, per chance, considered a map showing areas of interest?

I've just indicated my interest in a receiver (I want to put together the whole shebang), but it might (at rank 2347) be years before I'll reach the "interested" point. I can fully understand if you have an area flooded with receivers that it will prove of no further value getting another, but there is nothing on the site (that I found) to indicate whether there is value in registering interest.


Yours,
Marc
(Milton Keynes, UK)

If the improved voltage regulator PCB 21 is now necessary for System Blue, where does one obtain the PCB 21 board -- or does one need to build it from scratch?

For those considering adding filters, here is a good guide to SMD soldiering.

https://www.youtube.com/watch?v=hoLf8gvvXXU

Good day to all! Question about using Arduino in the project. Maybe someone has had this problem? I think that in this case the project can be more widely distributed.

found by incident my old System green and am wondering if it still can participate the Network. Thought of reactivating it via Serial tracker app.
Would be great to know if the Hardware can be work in future again.
thanks in advance for your Response,

br Robert, Station 560

Hello everybody,

it seems like there have been a few downtimes of lightningmaps.org in the last days.
Is the root cause for this known? Is it possible to support the team if its a server ressource etc. problem?

Kind regards
Oliver

Hallo alle, kann sein das ich das Problem überlesen habe.

Station 1564 FW 8.2 PCB 19.3/H0/E0

Bei mir schwankt die Spannung der CPU von 3.25V bis teilweise 3.50V.

   

Ist das so normal? Meine Red hält die Spannung sauber bei 2.95V

Gruß Silvio.

Hallo Leute,
seit gestern springt meine Station Blue immer ab ca 23 Uhr regelmäßig in den interference modus.
Im moment läuft sie auf Automatik. Es ist einfach nur komisch, dass ich bis jetzt nie etwas hatte und plötzlich springt sie gestern und heute zur selben zeit in den interference modus und wieder zurück. dies dauert dann ca 1h und dann ist alles wieder wie vorher.
durch etwas rum probieren, konnte ich auch feststellen, dass es eine der drei h feld antennen auslöst. wenn ich diese deaktiviere, dann ist springt sie nicht mehr in den modus.
warum empfängt nur eine der 3 antennen plötzlich so massig viele signale?

ist das jetzt einfach nur ein zufall? oder liegt es an der hohen blitzdichte, die wir gestern und heute nacht haben?
ich bin echt verwirrt

Grüße
BlackRockShooter

Hi all,

after power on it seems all OK (mode & Networks leds on, beeps) but I cannot connect to the internal web page and I don't get any ping response. It's seems that the System blue is on different subnet than my PC. I do not know if this is true (No AV no firewall activated on my PC)

I have read similar issues in the forum but I'm not sure that there are solutions. Any ideas?

I don't yet have the GPS antenna. Is this related to the web issue?