Blitzortung.org Forum

I'm finding I'm getting exactly 100 triggers per second on the H field antenna and I think it's down to house wiring as turning it so that it's 45 degrees off parallel with the x and y axis of my house reduces the noise. The auto amplitude filter is effective and cancelling out +/-47 and +/- 141mV

Antenna is a coaxial möbius with a 50 turn transformer. Settings below. Any thoughts?

• ModeAutomatic, Noise Adaption, Amplitude Filter
  
• SignalsReceived: 396404, Good: 14969, Sent: 13692
  
• Signal RateLast second: 100, Last 60s: 99.6
  
• ErrorsNo GPS: 0, Overflow: 0
  
• StatusNormal
  
• Server , Region 1
  10.6MByte, 3% Compr., 13692 Packets, 812Bytes each
  

Amplifiers

Amplifier 1 - H0

• Channel A
  • Trigger-37mV/91mV, reached 20 times in last 15m, 54s
    
    
  • Gains10 * 10 * 40 = Total Gain 4000 | Relative Gain 6349 (99%)
    
    
  • Noise47mVpp
    
    
  • Lowpass Filter30.5kHz
    
    
  • Auto Ampl.Filter amplitudes around 47mV
    

Amplifier 2 - E0

• Channel A
  • Trigger-44mV/82mV, reached 95291 times in last 15m, 54s
    
    
  • Gains10 * 10 * 40 = Total Gain 4000 | Relative Gain 6349 (99%)
    
    
  • Noise35mVpp
    
    
  • Lowpass Filter30.5kHz
    
    
  • Auto Ampl.Filter amplitudes around -141, -47, 141mV
    

ADC

• Sampling per InputResolution: 12bits, Period: 666ns = 500.0kSPS, Time: 2000ns
  
• ADC1
  • Input1Amp-Channel 3 , Offset 27mV, no Trigger
    
    
  • Input2Amp-Channel 4 , Offset 19mV, Trigger -63mV/63mV
    
• ADC2
  • Input1Amp-Channel 2 , Offset 24mV, Trigger 0mV/0mV
    
    
  • Input2Amp-Channel 3 , Offset 27mV, no Trigger
    
• ADC3
  • Input1Amp-Channel 1 , Offset 27mV, Trigger -64mV/64mV
    
    
  • Input2Amp-Channel 2 , Offset -169mV, no Trigger
    
    

In many countries, 100hz is the power line zero cross (50hz) frequency. Maybecomputer / tv / whatever power supply

Power line itself shouldn't show up as 50/60 hz doesn't make it into the amp.

Start shutting stuff off until it goes away.

Also, please strip the server IP out of your post.

Oh. And mine looks bad today. Lawnmower got the cable to the antenna. Might actually look similar to yours, but at 60hz

Try manual mode and adjust gains.

I use manual mode with Amplitude Filter.