| Also checkout the [
			feedback and customer survey cards.] Product Review: 
			X90-OPUS: 
			Professional Surveyor Magazine[ Article 
			] March 2014
 
			
			Product Review: X90-OPUS: The American Surveyor[ Article ] [
			
			PDF ]
 OPUS-Projects: The Next Revolution in GPS: 
			The American Surveyor[ 
			Article ] [ Video: YouTube,
			
			Flash ]
 Seven Free Alternatives to OPUS GPS 
			Post-Processing During U.S. Federal Government Shutdown: GPS Worldhttp://gpsworld.com/7-free-alternatives-opus-post-processing-in-government-shutdown/
 
			A New Standard for L1L2 Static Receivers? 
			GPS Worldhttp://www.gpsworld.com/a-new-standard-for-l1l2-gps-static-receivers/
 
			Low Cost Receiver:http://www.gpsworld.com/igage-introduces-low-cost-opus-gps-receiver/
 OPUS: Understanding the Results:http://beerleg.com/index.php?mode=thread&id=210864
 
			Understanding GPS, OPUS, DATUMS 
			continued...:http://beerleg.com/index.php?mode=thread&id=211762
 
			Proud X90 Owner...http://beerleg.com/index.php?mode=thread&id=244070
 
			More Proud X90 Owners...http://surveyorconnect.com/index.php?mode=thread&id=274476
 
			Bang for the buck...http://surveyorconnect.com/index.php?mode=thread&id=271761
 
			
			
			 
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