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Old 08-04-2008, 01:31 PM   #9
zacs
D'oh
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Join Date: May 2004
Location: RI
Posts: 3,296
you don't need the black box if you buy one of the "s" series. they include fishfinders. if you do not buy an "s" series, and later want to include sonar, then you would have to use the GDS21.

i bent my wookie
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