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  • #1

    Basic questions

    i have reading most of the posts on this sight and all of it is well over my head. But as i mentions in a previous post i have always want to try this. my first detector was really bad and didn't find much. someone sent me a schematic and i played around with and probably ruined it, a $15 dollar lose. Now a co-worker traded me a Famous Trails MD7012 since he knew i wanted to try this out for a wired router i had sitting around. The famous trails looks a little better, but it has a hell of lot more buttons.

    it came with directions so i tuned like they said, but here are my problems.
    it only seems to find thing on VLF mode. i took my gold wedding band and placed on the concrete and grass and it found it. in the TR1 and TR2 mode it did not. then i took a quarter, dime and penny laid them all out on the ground and the detector found them. Then i buried them and found nothing.

    besides not having a good metal detector, what can i do to tune this up? and what are all different knobs used for?

    a little help please.
    Tags: None
  • #2
    Jsarno,
    here is the instructional sheet for this machine. Read!
    Attached Files

    Comment

    • #3
      Or quick use sheet here:

      http://www.famoustrails.com/manuals/...kUseSheet1.pdf

      Comment

      • #4
        thanks for the links guys, i have those. i really dont understand what each knob really does and why i can't find my wedding band.

        Comment

        • #5
          Originally posted by jsarno View Post

          thanks for the links guys, i have those. i really dont understand what each knob really does and why i can't find my wedding band.
          Probably you need to read some basic obout MD first. Search Google with keywords "How Metal Detectors Work".

          Or search for each command button function: Sensitivity, Discrimination, Treshold, Notch, Volume, Pinpoint (prety same command on all MD).

          There are a lot of explanation on web.

          Comment

          • #6
            Originally posted by jsarno View Post
            thanks for the links guys, i have those. i really dont understand what each knob really does and why i can't find my wedding band.
            Your commands:

            MODE = switch for 3 mode (read instruction)
            TUNE= pot for balancing your meter to 0 position
            VOLUME= pot for voice strenght regulation
            GROUND=ground balancing pot (for start usually set in middle position – read about tunning in instructions) - unproper balancing can impact sensitivity
            DISCRIMINATION= to discriminate between different sort of metal, this pot (potetiometer) can cause that you lost sensitivity on gold jewelry (to best sensitivity set it max at left)
            SENSITIVITY= as name say pot for sensitivity regulation – max turn on right mean usually max sensitivity of detector (turn on left can cause you lost sensitivity on your test targets).


            Read and act according instructions:


            QUICK USE SHEET FOR FAMOUS TRAILS MD3006 & MD7012

            OPERATING INSTRUCTIONS:

            1. Set BATT TEST to OPERATE
            2. Holding the detector comfortably rotate MODE to desired position:
            a. Set to VLF to test battery and adjust TUNE and GROUND
            b. Set to TR1 to detect extreme differences in metals (such as between gold and iron)
            c. Set to TR2 to detect finer distinctions (such as aluminum and gold)

            TUNING METAL DETECTORS:
            1. TUNE balances detectors receiver and transmitter to provide consistent pointer and tone indications.
            2. Rotate VOLUME to 10 o’clock
            3. Set mode to VLF
            4. Set GROUND, DICRIMINATION, and SENSITIVITY to midrange
            5. Holding the search coil 1 ft. from ground/ metal object, depress the red button on handle and rotate TUNE until view meter points to 0. (note: to return pointer to center of view simply press red button)

            TESTING AND USING METAL DETECTORS:
            1. Indoor testing:
            a. Remove all metal jewelry, place detector on wooden or plastic table, and adjust search coil to angle up.
            b. Set MODE to TR1 and move sample metal 2 in. above search coil. (Metal detector will not detect without motion)
            c. If metal is detected indicators will flash and pointer will move to FERROUS or NON-FERROUS accordingly.
            2. Outdoor testing:
            a. Locate area free of metal and place item to be tested (coin or gold ring) on ground.
            b. Set MODE to TR1 and sweep search coil from side to side about 1-2 in. above area.
            c. Detector will respond strongly when it detects most valuable objects. If signal does not repeat after being swept over object a few times, the metal is probably junk.
            d. After finding a metal item, wait a few seconds to allow detector to reset.

            ADJUSTING SENSITIVITY:
            1. To adjust coil’s ability to detect objects at varying depths, rotate
            SENSITIVITY between MIN and MAX, leaving it set as high as
            possible for maximum detection depth.
            2. If detector begins to chatter decrease sensitivity until noise stops
            3. To set GROUND, set MODE to VLF. If pointer swings right turn
            GROUND to left and vice-versa. Lift coil at least 12 in. from ground and press red button to return pointer to center. Repeat these steps until pointer stays close to center each time coil is lowered

            ADJUSTING DISCRIMINATION:
            1. If MODE is set to TR2, start with DISCRIMINATION set to mid-
            range, and adjust to best position while in use.
            2. As you set the discrimination to higher levels you will be able to
            pass over small objects without detection.

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