Author Topic: ferrite antenas  (Read 995 times)

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Offline andystorms

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ferrite antenas
« on: May 02, 2015, 12:51:52 PM »
Hi iv

Got a red blitzortung lighting detector what I need to know which wire goes to what terminal because they are not marked On the ferrite antenas.

Any help would be appreciated.

Thanks
« Last Edit: May 02, 2015, 12:53:35 PM by andystorms »
Andrew Gough
My Blitzortung Lightning Detector
Statistics of Blitzortung station Walsall,West Midlands

Offline Cutty Sark Sailor

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Re: ferrite antenas
« Reply #1 on: May 02, 2015, 01:29:12 PM »
Doesn't really matter, Andy... one way the signal come in reversed from the other, and that doesn't matter the way this system works.  Ant A goes to top two block terminals, B goes to Bottom 2 terminals...
« Last Edit: May 03, 2015, 06:36:59 AM by Cutty Sark Sailor »
 

Offline andystorms

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Re: ferrite antenas
« Reply #2 on: May 02, 2015, 01:53:01 PM »
Thank you for that but how come one antenna as a higher gain than the other and i cannot get rid of noise.iv tried grounding the controller.

my detector is in the bedroom connected to a laptop computer tried battery only but the noise is still there.also have a router extender plugged in tried with that off to but still no joy.

This is what i'm set at

CommunicationRx: 872 ago / Tx: 872 ago
Channel A
Trigger-122mV/118mV, reached 18 times in last 881
Gains2 * 32 * 40 = Total Gain 2560 | Relative Gain 2133
Noise84mVpp
Channel B
Trigger-122mV/118mV, reached 12 times in last 881
Gains2 * 32 * 40 = Total Gain 2560 | Relative Gain 2133
Noise57mVpp
Andrew Gough
My Blitzortung Lightning Detector
Statistics of Blitzortung station Walsall,West Midlands

Offline Cutty Sark Sailor

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Re: ferrite antenas
« Reply #3 on: May 03, 2015, 06:36:32 AM »
would help if you gave us your BT station number...   O:)
 

Offline miraculon

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Re: ferrite antenas
« Reply #4 on: May 03, 2015, 08:49:04 AM »
For one thing, I would recommend a different gain strategy.

You do not want to have higher gain in the 2nd stage than the first. The higher gain number should always be in the first amplifier. All amplifiers have inherent noise, you are amplifying the noise of the first amp stage by 32.

I would at least reverse the order to 32x2, 16x4 might be a better starting point.

Please post a screen capture of your noise floor on the Signals tab of the controller GUI, in addition to your station number.

Greg H.


Blitzortung Stations #706 and #1682
CoCoRaHS: MI-PI-1
CWOP: CW4114 and KE8DAF-13
WU: KMIROGER7
Amateur Radio Callsign: KE8DAF

Offline andystorms

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Re: ferrite antenas
« Reply #5 on: May 03, 2015, 02:07:35 PM »
Thank you again for your help have got it in automatic
mode now.

My station number 970.
Andrew Gough
My Blitzortung Lightning Detector
Statistics of Blitzortung station Walsall,West Midlands

 

anything