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FlyFish

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Posts posted by FlyFish

  1. 1 hour ago, dewcon4414 said:

    Cool finds.....  i wonder how their county handles those type of finds?   Some are very strict.......... we are lucky in that respect..... well unless you find a crazy amount of gold and post it lol.

    The severity of the laws is compensated by the lack of enforcement.   Gold is also found a little...

    23729929_m.jpg

     

  2. 1 hour ago, Dwarf said:

    The 600 can run single frequencies of 5, 10. 15khz.  Multi IQ will run up to 3 frequencies, not necessarily the 5, 10. 15khz.  When in Multi IQ the detector chooses the frequencies based on mode and ground.

    The 800 can run single frequencies of 5, 10, 15, 20, 40khz.  Multi IQ will run up to 5 frequencies, not necessarily the 5, 10, 15, 20, 40khz.  In the Gold Mode, you can only run single frequency.  No multi IQ available in Gold Mode.

    For Equinox Wrong the notion of frequency.  

    The device processes the harmonics of frequencies 5, 10, 15, 20, 40khz.   

    Components of a complex multi-frequency pulse signal. (Frequency spectrum)

    US08159225_4618268_29162189.jpg

    MultiIQTra_5678182_29162099.jpg

  3. 6 hours ago, FlyFish said:

    FBS uses multiple channelled Sigma-Delta analogue-to-digital converter technology to digitise the analogue signals received by the search coil. This ultra-fast processing, using a digital reference (1 bit DAC), provides the microcontroller (MCU) with detailed information about the ground conditions and targets. This gives FBS the ability to precisely separate target signals from ground signals for maximum detection depth. It also provides Smartfind with the necessary high resolution target data to accurately plot targets.

    minelabcom_1600845_29051210.jpg

    In the scheme of the patent is not visible FBS

     

    Perhaps some kind of intermediate option

  4. 9 hours ago, tsunamiscott said:

    FBS related?

    FBS uses multiple channelled Sigma-Delta analogue-to-digital converter technology to digitise the analogue signals received by the search coil. This ultra-fast processing, using a digital reference (1 bit DAC), provides the microcontroller (MCU) with detailed information about the ground conditions and targets. This gives FBS the ability to precisely separate target signals from ground signals for maximum detection depth. It also provides Smartfind with the necessary high resolution target data to accurately plot targets.

    minelabcom_1600845_29051210.jpg

    In the scheme of the patent is not visible FBS

     

  5. Minelab Electronics Pty Limited 

    Method and Apparatus for Metal Detection Employing Digital Signal Processing 
    US 20070296415 A1

    This invention relates to a metal detector using multiple frequency signals generated and processed digitally. The detector transmits sinusoidal signals using a multiple frequency resonator or square waves, with optional modulation. The operation of the transmitter is continuously monitored to allow for tuning, detection of abnormal conditions and correction of phase shifts.

    Untitled3j_2420241_29047835.jpg

     

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