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How deep can you locate with the Scout?

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  • How deep can you locate with the Scout?

    I have sewers in my area that drop dow to 20' will the scout pick up that?

  • #2
    Re: How deep can you locate with the Scout?

    There will no doubt be folks who will say "yes" to this question, but the "real" answer is:

    There is no way to tell.

    There are a number of factors that affect the range of any transmitter. Here are a few:

    Whether or not it is horizontal in the line
    Interference from other adjacent underground utilities
    Type of pipe
    etc., etc.

    That being said, I have picked up a signal from my SeeSnakes from that depth with Radiodetection receivers, BUT depth readings at that depth were NOT correct. I could tell where the transmitter was, but the "push button depth" was way off - likely due to lack of signal.

    When you don't have accurate push-button depths, you have to go back to the old school find nulls & calculate method.

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    • #3
      Re: How deep can you locate with the Scout?

      as vance has mentioned. it's not the reciever that's the issue, it's the transmitter that needs the power.

      look at it from this perspective.

      you can take a $5.00 am/fm radio and pick up a good signal from 100 miles away, as long as the transmitter is putting out the power.

      rick.
      phoebe it is

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      • #4
        Re: How deep can you locate with the Scout?

        Originally posted by PLUMBER RICK View Post
        as vance has mentioned. it's not the reciever that's the issue, it's the transmitter that needs the power.

        look at it from this perspective.

        you can take a $5.00 am/fm radio and pick up a good signal from 100 miles away, as long as the transmitter is putting out the power.

        rick.
        Look at it this way: you could have a $500 receiver and be 20 miles away but if you have a sh!t antenna you ain't hearing nothing.

        The sensitivity (ability to discern low level signals) and selectability (ability to reject unwanted signals and/or interference) of the receiver is just as important as the transmitters' output power.
        ---------------
        Light is faster than sound. That's why some people seem really bright until you hear them speak.
        ---------------
        “If I had my life to live over again, I'd be a plumber.” - Albert Einstein
        ---------
        "Its a table saw.... Do you know where your fingers are?"
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        sigpic http://www.helmetstohardhats.com/

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        • #5
          Re: How deep can you locate with the Scout?

          Rick & Bob:

          You're both right. Ya gotta have both.

          I guess what I was getting at was:

          One day, I have NO problem at all locating a 20 ft. deep sewer in an open field with no other utilities and/or interference.

          The next day, I can't pick up a 18" deep sewer because it's in a mechanical room right next to a VFD (variable frequency drive - the absolute WORST device I have ever encountered for generating huge amounts of broadband hash) for a 100HP chilled water pump.

          So, three things matter:

          Xmtr power
          Rcvr sensitivity & selectivity
          Site conditions

          I would personally add another:

          Operator experience.

          Regardless what the mgfrs. of the equipment tell you about "Push button simple!!!", you WILL get better at using the stuff over time. I have been running all kinds of subsurface detection gear for over 20 years, and not a week goes by that I don't learn something new.

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          • #6
            Re: How deep can you locate with the Scout?

            Have you tried using other frequencies? There should be one or two that offer better reception (stronger signal to noise ratio) than the rest.
            ---------------
            Light is faster than sound. That's why some people seem really bright until you hear them speak.
            ---------------
            “If I had my life to live over again, I'd be a plumber.” - Albert Einstein
            ---------
            "Its a table saw.... Do you know where your fingers are?"
            ---------
            sigpic http://www.helmetstohardhats.com/

            Comment


            • #7
              Re: How deep can you locate with the Scout?

              something i have discovered here is that soil content effects accuracy. salt & ferrous metals in the soil make a good locate more difficult

              steve
              In the never ending struggle to keep the water flowing.... The Poo Poo Cowboy rides again!!!

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              • #8
                Re: How deep can you locate with the Scout?

                Originally posted by Bob D. View Post
                Have you tried using other frequencies? There should be one or two that offer better reception (stronger signal to noise ratio) than the rest.
                You can't change the xmtr freq. - it's fixed at 512Hz.

                But to answer your question - yes, I have tried diff. freqs. when locating other stuff around VFD's - it didn't matter much. All that current, being switched off & on, just generates hash and the frequency spectrum of it is VERY wide. Can't do much about it. If someone wants something critical located near an interference source like that, they just have to schedule a shutdown (yes, it has happened, twice in 20 years).

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                • #9
                  Re: How deep can you locate with the Scout?

                  Thanks for the advice guys. I went ahead and bought received the scout. I ran a few winter tests and everthing seems ok for now. I will recheck when the snow goes or if I need it for a service call. F.Y.I. pipe is typically 6" clay and transmitters are the sewer cable sonde and camera sonde.

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                  • #10
                    Re: How deep can you locate with the Scout?

                    I have tried diff. freqs. when locating other stuff around VFD's - it didn't matter much. All that current, being switched off & on, just generates hash and the frequency spectrum of it is VERY wide. Can't do much about it. If someone wants something critical located near an interference source like that, they just have to schedule a shutdown (yes, it has happened, twice in 20 years).
                    Acai Juice Berries Pulp Product Review merchant processing

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                    • #11
                      Re: How deep can you locate with the Scout?

                      You guys are all correct. The variables are endless, from soil, to pipe, mositure in the soil, surrounding electrical freq., What transmitter are you using etc.... The deepest I have located and verified the line once it was dug up was 19'. That does not happen very often. If you are questiong the location use two locaters and double check them.

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