Device for transmitting signals by radio and cable between a cen

Details Device for transmitting signals by radio and cable between a cen Device for transmitting signals by radio and cable between a cen

1983-12-22

1990-12-18

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 76, 455 53, 340539, G01V 122

Patent

active

049791524

ABSTRACT:
In a data acquisition for seismic exploration, where the terrain is rugged or includes natural features which prohibit satisfactory radio communication between a central control and recording system and a plurality of seismic data signal acquisition devices, a relay element and a transmission cable are provided so that those acquisition devices which are not capable of satisfactory radio communication with the central control and recording system communicate instead with the relay element either by transmission cable or radio transmission and the relay element in turn communicates with the central control and recording system either by radio transmission or transmission cable, respectively.

REFERENCES:
patent: 4296485 (1981-10-01), Clemens
patent: 4408307 (1983-10-01), Harris
patent: 4583206 (1986-04-01), Rialan et al.
"Over the TV Horizon", 1959, (455/7).
Gus-Bus Digital Seismic Telemetry System, Gus Manufacturing, Inc., 9/1977, p. 5.

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