. Early geophysical papers of the Society of Exploration Geophysicists. Petroleum; Prospecting. 136 C. A. H EI LAND impedance-coupled amplifier, incorporating a tuning of the choke for the elimination of harmonics so as to enable a better setting of the bridge. Figure 23 shows a view of the Racom, with amplifier underneath the instrument box, and a buzzer on the side together with the power and the exploring electrodes. For more details on the operation of the Racom and examples of a number of surveys, see Lundberg and Zuschlag's publication on the subject (ref. list No. IV5). A C A . c . C ^.
. Early geophysical papers of the Society of Exploration Geophysicists. Petroleum; Prospecting. 136 C. A. H EI LAND impedance-coupled amplifier, incorporating a tuning of the choke for the elimination of harmonics so as to enable a better setting of the bridge. Figure 23 shows a view of the Racom, with amplifier underneath the instrument box, and a buzzer on the side together with the power and the exploring electrodes. For more details on the operation of the Racom and examples of a number of surveys, see Lundberg and Zuschlag's publication on the subject (ref. list No. IV5). A C A . c . C ^. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Society of Exploration Geophysicists. Tulsa
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Keywords: ., bo, bookcentury1900, booksubjectpetroleum, booksubjectprospecting
