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Recent content by lkrustev

  1. L

    [SOLVED] Long distance Metal Detector schematic

    Totally agree!!! - - - Updated - - - The IDX PRO clone with the VDI mod is the best that an average enthusiast can build. It is a good analogue-digital combo.
  2. L

    [SOLVED] Long distance Metal Detector schematic

    This is my IDX PRO clone homemade with VDI visual discrimination:
  3. L

    [SOLVED] Long distance Metal Detector schematic

    The limit of a good metal detector is about 30 cm in soil with low mineralisation for 1 Euro coin. The equivalent of this is about 40- 45 cm air drtrction. This is impossible for 90% of the mass produced detectors. Building a deep detector is an art. I've spend many hours tuning the electronic...
  4. L

    40 Mhz amplifier for RC Long Range - advise needed

    Thanks man, but I am just looking for an advice how to improve the filtering of that device so it cold work better on 40 mhz.
  5. L

    40 Mhz amplifier for RC Long Range - advise needed

    By the way the used MOS FET in the output is probably 2SK2973
  6. L

    40 Mhz amplifier for RC Long Range - advise needed

    Hello friends. My current RC transmitter is capable of 20 m range and it is providing about 2-5 mW which is pathetic. The statament it that the booster is capable of 1.5 W power so tihis is my goal. I just want to know how I can optimise the transmitter to work better on 40 mhz as it is designed...
  7. L

    [SOLVED] Long distance Metal Detector schematic

    As well guys as I have many hours spend building homemade detectors, let me tell you some things. The coil is criticall - you can't ballance it propperly without an osciloscope as well a good coil is tough to build. You have to use a high quality epoxy resign, it must be shielded to prevent the...
  8. L

    [SOLVED] Long distance Metal Detector schematic

    I have some experience with MD schematicks as I build several by myself. Good shematic is Whites IDX http://md4u.ru/viewtopic.php?t=5833 I build it and it can detect 1 euro 30-35 sm in air.
  9. L

    [SOLVED] Long distance Metal Detector schematic

    30 cm for what object?
  10. L

    40 Mhz amplifier for RC Long Range - advise needed

    Hello everyone! I am new here and I need an advice about this RF amplifier: https://www.ebay.com/itm/182196835491 I purchased it with the idea to boost the signal of my RC controll which is 40 MHz. The signal from the RC transmitter is only about 1-5 mW and the range is about 20 m. The...
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