Note, just like the 276C, Garmin has failed to see the full crossover potential with their 620 and 640 by not utilizing a high sensitivity receiver (ala sIRF, et al). Not a big problem, I guess, if you don't use it around tall skyscrapers in big cities, in deep canyons, or in heavily forested areas. Seems like another missed opportunity to me.
OK, now I'm really confused. I wrote the above comment based on the following email I received from Garmin in late December:
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Thank you for contacting Garmin International.
The GPSMAP 620 does not contain a high sensitivity receiver. If you are familiar to the GPSMAP 276C, the GPSMAP 620 will be equivalent to satellite acquisition. It can accept the MapSource Topo mapping and be very similar to the detail quality as the GPAMAP 276C. It is also WAAS enabled.
With Best Regards,
Steve D.
Garmin Marine
Garmin International
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I just checked the Garmin website and found this comment which says exactly the opposite: "...the GPSMAP 620 comes standard with a high-sensitivity GPS receiver..." Now I don't know who to believe, Garmin's website, or their Marine department. Perhaps it's a last minute design change? Anyway, I'll send them another email and see if I can get "another" definitive answer.
2/3/09 Update: talked w/ Garmin this afternoon. The Marine Division now says: "we won't know for sure if the 620 has a high-sensitivity receiver until the unit is actually released [sometime in 2009Q1...call back then...." hdm
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