Northstar GPS $350

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Does this unit have the DGPS differential antenna? If I were you I would find a place to use it. I have this set that was updated by the last remaining employees of North Star and I still use it today. At any given time the accuracy is at least 18 ft, and mine is always around 8 ft using the sandyhook beacon. I take divers out once in awhile so I know its that good!!