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Old 12-30-2001, 06:09 PM
loubapache loubapache is offline
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Join Date: Jul 2001
Location: Western Michigan
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"C" for "Commercial" and "S" for "Service"

Actually the "C" in CH-4 stands for "Commercial" and the "S" in SJ stands for "Service". It is a misconception when "C" is referred to as "Compression" and "S" as "Spark."

See publication by API at
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