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  • #11119 Svara
    F5VLB
    Deltagare

    I use two electrodes of 2m long buried underground, 100m apart and oriented 285°. I feed an usb sound card UMC202HD from Behringer and decode with spectrum lab. Very noisy here in Brittany France due to proximity of a water pump station and the speed controller regulators radiating a lot of interferences as one can see on the picture. Anyway a faint signal was decoded.
    73’s Jean Marie F5VLB
    https://www.facebook.com/groups/earthprobes

    saq reception

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    • #12160 Svara
      Jean Marie POLARD
      Gäst

      Good evening Rich, have a try ! if you do try, you don’t know. Earth probes antenna (epa)works even when the soil is dry. I have done tests during summers, in RX and TX mode, even on 8.25kHz (yes 8270 Hertz). For more information come on https://www.facebook.com/groups/earthprobes there is a files section with plenty of pdf about the topic.
      Good luck, and keep us informed.
      73’s Jean Marie F5VLB

    • #12157 Svara
      rich.g.williams
      Deltagare

      “two electrodes of 2m long buried underground, 100m apart and oriented 285°” That’s a good idea, does the ground need to be fairly dry for that to work? I’m assuming your electrodes are measuring the small potential difference created by the SAQ E-Field component. I have tried a 10m circular loop of insulated wire placed on the ground and it works well for some VLF transmitters but not SAQ (because SAQ M-Field is horizontal).

      I will experiment with your setup next time SAQ transmits, I can easily get an electrode (Ground Rod) separation of 25m minimum.

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