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+--- Thread: shield the E-field ? (/showthread.php?tid=1374)
RE: shield the E-field ? - cutty - 2015-06-23
(2015-06-23, 17:57)Knickohr Wrote: Ahhhh,
I remember this picture
Test it a few hours. Maybe "auto adapt to noise" and "auto amplitude filter" ON give some more efficiency.
Thomas
Here, try this! If you haven't, try setting up alternate channel mapping as in http://www.wxforum.net/index.php?topic=22710.0... Now find which H field the noise worse on. Make sure it's coming from that monster in your backyard. It's probably near field magnetic, and doing much to E field won't help on the e-field channels... the field might be so strong, that the probe or preamp circuitry intercepts it... in that case E needs to be relocated... it might be as simple as lowering the probe a few feet, but watching your sigs for awhile, I think, with Alternate Channel Mapping turned on, you can lower gains on E B channel and help that somewhat... that was an impression, and may be wrong on a quick look... you'd still have it on C channel, but you might be able to compromise between A and C, if you follow me. Now, C channel is the most important one... so even if you have to 'sacrifice' those so-called effectrivity/efficiency figures to contribute with "quality'. if It's e field, there's not a lot you can do, except relocate e field antenna somewhere at minimum disturbance. If it's H field, you could run that channel, and also E field (A or B at different thresholds/gains, if you're in Alternate Channel Mapping. I've found the best way, overall, to locate and eliminate noise sources is to stay full manual, no filters, and play with the things as you track it down, or do the things necessary to mitigate the noise. If your're not running "Alternate channel mapping' the way we explored it, than your settings can 'interfere' for lack of a better word, with the 2 different amps. It is also possible that that monster down the hill has a 'better' or 'worse' ground than you have on the controller. It only takes a tiny amount of difference to mess stuff up, and go 'ground looping'. I had to play with 'controller' ground a bit before I found that the Television Cable ground connection was best in my location. One other thing you could do, if it's the monster, tell the Utilities company that you cannot receive AM radio, and it's due to radiation from that thing... .
seriously... when I first set up, I had an awful time with H field... it took some time to find the best spot for locating H field ferrites. But this made it easier to locate the E field assy, later on. Now, my environment has changed, somewhat, and I'm having difficulty resolving the issues. However, because I had determined my 'baseline' environment, I can accept the junk, and adjust, as needed. Auto Mode does NOT work well for me, it may later, with the release of BLUE, and the developers bring it our of what is still "BETA".... the 'so called' 'auto amplitude' and 'adjust to noise level' are also unsatisfactory, in my environment... I'm best in 'manual', and learning how to 'judge' the current environment... I 'don't ride gain', but I do some evaluation before modifying any settings... .
Also, remember, it's possible not all of your 'junk' is from 'the monster'... a couple of Operators and I have attempted 'matching signals'... and in all instances, we'd both log the same signal, not accepted by the server, though we were several hundred miles apart. Some of it looked exactly like 'a nearby sodium vapor light', which was impossible. Try the above, if you haven't, don't beat your head on the wall, this is part of the 'fun'
I just reread this.. sounds pretty rambling... sorry. Hope you can make sense of it...
RE: shield the E-field ? - Rothuize - 2015-06-24
Hi Mike
Yes I have edit it already yesterday (alternate channel mapping)
And I have disable channel A from the E-Field really this one pick all the noise
If it is on I can not count the counter anymore it go fast from 1 till 100 ……. Up and up
Manuel settings are from yesterday
Channel A Gain 10/4 85MV
Channel B Gain 10/4 85MV
Channel A Gain 0 Mv
Channel B Gain 5/8 90mv
Channel C Gain 5/5 85mv
Only I find something strange with low lighting I have also low noise
And if there is high activity my noise go also very fast up
You can see into the graphic from Bltzortung it follow it only with a very high count
AM Radio
Ahh that’s a good one .. only nobody is listening on the AM here anymore only FM radio
And if I am walk with a small radio on AM 1.6 I do not here it so that’s strange !!
I have also walk around with the RED and a laptop 1 small loop and so I discovers the noise maker !!
Only that will not work anymore I think this fireware will not work anymore with a cross cable see this http://forum.blitzortung.org/showthread.php?tid=369&pid=3679#pid3679
New place antenna ?
It is for my not possible to place my antenna on a new spot
Only I can try only this
I live to a river and next to my house I have 2 small bridge only 1.5m up from the water
Is it possible a put the e-field below it ?
Bridge 1 concrete so this will not work I think
Bridge 2 = made from wood so maybe this will work ?
Only I need a coax cable from +_ 25 m
Thanks for al the info .
Gert
RE: shield the E-field ? - Knickohr - 2015-06-24
Try "auto adapt to noise" and "auto ampl. filter". This will reduce the gain if storms are coming in.
By the way, your station works good, you detect 1/3 of all strokes !
Thomas
RE: shield the E-field ? - Rothuize - 2015-06-24
(2015-06-24, 16:46)Knickohr Wrote: Try "auto adapt to noise" and "auto ampl. filter". This will reduce the gain if storms are coming in.
By the way, your station works good, you detect 1/3 of all strokes !
Thomas
yes I know Thomas
I turn it on if we have some activity close by
on this moment not
and if I turn the red to auto ( also cannel A on ) it will detect more strikes but also more noise
don't know want Blitzortung want .. more strikes and more noise ... ore less strikes and less noise
on this moment it is less
RE: shield the E-field ? - Knickohr - 2015-06-24
Neither nor !
The quota strokes(h)/singals(h) is it !
if every signal is a stroke, the station works perfect
Thomas
RE: shield the E-field ? - cutty - 2015-06-24
hmmm.... I'll watch your signals a while later today.... turn A on .... there might be something with the A amplifier channel.... or your have a very unusual noise,... it might be a cold solder joint or something on the amplifier board on one of the ICs ... perhaps the A amplifier might be going into oscillation. I'd think you'd have some crossover signal into the B channel if it was external...
Meantime, remember what Thomas said above... your station is working pretty darn good!
Mike
RE: shield the E-field ? - Rothuize - 2015-06-24
(2015-06-24, 19:57)Cutty Wrote: hmmm.... I'll watch your signals a while later today.... turn A on .... there might be something with the A amplifier channel.... or your have a very unusual noise,... it might be a cold solder joint or something on the amplifier board on one of the ICs ... perhaps the A amplifier might be going into oscillation. I'd think you'd have some crossover signal into the B channel if it was external...hi Mike channel A is now on .. still run into Manuel mode
Meantime, remember what Thomas said above... your station is working pretty darn good!
Mike
I will sent you via PM my url for the controller ,,, you can play with it if you have the time ?
maybe you see something
but I now what you will see ( a wave into the noise )
greetings Gert
RE: shield the E-field ? - cutty - 2015-06-24
(2015-06-24, 21:23)Rothuize Wrote:(2015-06-24, 19:57)Cutty Wrote: hmmm.... I'll watch your signals a while later today.... turn A on .... there might be something with the A amplifier channel.... or your have a very unusual noise,... it might be a cold solder joint or something on the amplifier board on one of the ICs ... perhaps the A amplifier might be going into oscillation. I'd think you'd have some crossover signal into the B channel if it was external...hi Mike channel A is now on .. still run into Manuel mode
Meantime, remember what Thomas said above... your station is working pretty darn good!
Mike
I will sent you via PM my url for the controller ,,, you can play with it if you have the time ?
maybe you see something
but I now what you will see ( a wave into the noise )
greetings Gert
Hi Gert... sent you a quick PM reply with additional thoughts:
Click the below video to play... I've a suspicion this is something arcing...
the video shows the FFT for your A channel E amp, and the signal and FFT for B...
this thing has harmonics around 10-12 kHz throughout the bandpass, but does not show that much on H field, which makes me think it's an arc, electrical, of some type... see the PM....
Hope it's minor, but see if you can track it down...
Respect, and Cheers!
Mike
![[Image: External%20Preview%20-%20CUsersOSNDeskto...html-L.jpg]](http://www.ourspecialnet.com/Weather/Boperators/i-NBM8V5H/0/L/External%20Preview%20-%20CUsersOSNDesktopBlitzortung%20miscBoStaSigsfran689allchannelstest.html-L.jpg)
RE: shield the E-field ? - cutty - 2015-06-25
Check your email
M
RE: shield the E-field ? - Rothuize - 2015-06-27
thanks for your Mail Mike
Today I was busy with put the antenna on a new spot ( below a bridge ) ....but also many noise
A friend say I have a problem with the home power net ( 230v ) and I need a govanis travo
I think I spell it wrong because I can not find it with google ?
Someone know this ??
Also I made some movies
http://www.weerstation-woerden.nl/movie_red/long test.swf.html = below the bridge
http://www.weerstation-woerden.nl/movie_red/test achter all.swf.html = behind the house
you see that the graphs go from left to right ?? really strange
greetings Gert