Hybrid cellular seismic telemetry system = a solution to the industry's profit and data quality problems?
Bob Heath · The Leading Edge · 2003
About 25 years ago, some of the most successful acquisition systems were the Texas Instruments DFS-4 and DFS-5. They allowed crews to operate with, perhaps, around 120 channels. There were larger crews, but some suffered problems. Each seismic channel required one analog data pair in the spread cable, and any cable with more than 120 pairs of conductors can be heavy, unreliable, and expensive.