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Comparison Chart

Feature group



Cableless systems with only shootblind capability

Cableless systems with some data return capability

Benefit of feature and related issues

Central recorder

Low cost, PC based

Limited functionality

Usually requires expensive CCU hardware

Sigma has unrivalled software functionality for recording truck-based and recorderless operations.
Does not require expensive on-going software licences.

User software

Full suites for observer, deployment, downloading, harvesting

Limited software functionality


Recorderless operations


Not always an option

Not an option

GoogleEarth integration


Not always an option



International Seismic Co

9425 E Tower Rd.
Ponca City, OK 74604
Phone: (580) 762-8233
Fax: (580) 762-1785
email: This email address is being protected from spambots. You need JavaScript enabled to view it.