shield the E-field ?

[Knickohr]

This is the same situation as with my ferrite !

I cannot trigger on h-field because of heavy disturbers. But maybe you can trigger on e-field channel C.

Try :

Go to the settings tab

- manual mode
- set alternate channel mapping off, yes really off !
- set auto adapt to noise on
- set auto ampl. filter on

Go to the signal tab

click on amplifier 2

- set threshold for channel A and B to 0
- set threshold for channel C to 35mV
- set gains for channels to about 16x10

OK, watch channel C for gains. Gains will now change. If the system have found a good gain, then go again to the settings of amplifier 2. Now set gains for Channel A and B manually. But be carefull, the first number must be the same as the automatic found for channel C. Now play with the gains (middle number) of channel A and B for good and strong singals, but do not overtune it, do not override or clip singals.

P:S: your friend means that : https://en.wikipedia.org/wiki/Isolation_transformer
(but I'm nor sure if this really works !)

Thomas

[cutty]

P:S: your friend means that :  https://en.wikipedia.org/wiki/Isolation_transformer
(but I'm nor sure if this really works !)

Thomas

Now, that is sort of cute, and a good one on me...   English is my language, and I have to do a lot of Google translate...
Gert spelled it, for me, as "govanis trova" in his email... so playing around awhile I came up with something like
"Galvanic Detector"..  possibly meaning an EMI meter.. 

These language things can be confusing....

I Think the display runs backwards, at times, in Gert's movie, because of the different frame rates in Gert's SWF, and the frame rate of the Signals display... and means little other than the frequencies of the noise may also vary  in addition... resulting in that effect.

[Knickohr]

"Galvanic Detector"..  possibly meaning an EMI meter.. 

These language things can be confusing....

Thomas

[Rothuize]

hi Thomas and Mike
 I made a abc error   its Galvanic  trafo      oeps
but it works the same like this  page http://www.epanorama.net/circuits/antenna_isolator.html  
Only I don't need it between the antenna cable  but between the 230v power line !
it will stop the noise  from the input  to the output  to my 230v cable
next week I will go again to that friend  and hope he can  deliver it ?
I have google it but can not find it here  .. only the pro stuff  and that is to much money !

hope to know next week more
thanks for al the help 

greetings   Gert

[Knickohr]

Where do you want to install this isolator-transformer ?

What powersupply do you use for your station ?

Thomas

[Rothuize]

Where do you want to install this isolator-transformer ?

What powersupply do you use for your station ?

Thomas

between  the power socket and the socket( 1 in  and 6 sockets out ) to the computer and Blitzortung board 
powersupply board = the power socket from Blitzortung  230 to 5 V

[Steph]

Isolation transformers can (depending on type) transduce several 100kHz, so this probably won't work very well and is expensive.
I'd recommend putting a choke between the PSU and the controller.  Make as much as possible windings on a Epcos T37 ring core, or N30. This will help, if the noise is coming from the power line.
I made some measurements on that:
   

But as i said earlier, a clean grounding is most important for e-field. Vertical ground rods don't work well, because the current is seperating at earth surface due skin effect, leaving a big ground resistance.
Ideally large expanses of vertical wires just below earth surface are used. the more and the longer, the better.
   

But a direct wire to the water supply pipe will be enough for our purpose in most cases, as long the pipe is of metal and not PVC.

[Knickohr]

Yes, what type, model, brand of the 5V power supply do you use ?

Thomas

[Rothuize]

Yes, what type, model, brand of the 5V power supply do you use ?

Thomas

GooBay  model 44005  input 100-240VAC 50/60Hz    Output 5V DC 1A 
and I know what you are thinking 
But this is not the noise maker    on this moment I run the power from the PC ( USB) to the  Board
but all is still the same

[Rothuize]

Isolation transformers can (depending on type) transduce several 100kHz, so this probably won't work very well and is expensive.
I'd recommend putting a choke between the PSU and the controller.  Make as much as possible windings on a Epcos T37 ring core, or N30. This will help, if the noise is coming from the power line.
I made some measurements on that:


But as i said earlier, a clean grounding is most important for e-field. Vertical ground rods don't work well, because the current is seperating at earth surface due skin effect, leaving a big ground resistance.
Ideally large expanses of vertical wires just below earth surface are used. the more and the longer, the better.


But a direct wire to the water supply pipe will be enough for our purpose in most cases, as long the pipe is of metal and not PVC.

that's a nice setup  only this is not possible here
I don't live  free
and thanks for the info .... choke   will keep it in mind 

my ground is coming from my second grounding punt
not in this house  but this one is outside   no powerline on this one  
ground from water pipe  not possible  its PVC