FIELD: geophysics, determination of route and depth of laying of underground metal utility systems. SUBSTANCE: device has receiving antenna input voltage amplifier, filters unit and indicators. Receiving antenna is connected to input voltage amplifier with bandwidth of 40-200 Hz and 300 Hz frequency fading of no less than 30 dB. Filters unit, depending upon examined type of underground utility system, has bandwidth of 49-51 Hz with 100 Hz frequency fading of no less than 35 dB or bandwidth of 98-102 Hz with 50 Hz frequency fading of no less than and is connected to input amplifier and to converter, to which acoustic and/or pointer indicator is connected. In the case the latter is connected to input voltage amplifier. EFFECT: increased accuracy of determination of route and depth of underground metal utility systems laying. 1 dwg
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