Profile: Zonge Engineering & Research is a specialist in the development and application of broadband electrical and electromagnetic methods. We offers a wide range of electrical/electromagnetic geophysical equipment. All equipment is available for sale or rent. We also manufactures a complete line of supporting instruments & ancillary equipment required in systems used for the acquisition of most electrical resistivity and electromagnetic survey data. Our equipments include receivers, transmitters, generators, antennas and other accessories. Our GDP-32/24 multi-channel receiver features a 24 bit analog system, 133MHz 586 processor, expanded keyboard and graphical display. It is also equipped with real time data & statistical display. These are also featured with full compatibility with GDP-16 and GDP-32 series receivers. Our GGT-3 geophysical transmitter features a constant current supply with a out put up to 1000 volt and 15 amperes. These are also featured with a loop or grounded dipole, sealed construction for operation in wet environments with a compact modular design.