On Tue, 10 Jan 2006 22:49:32 GMT, "Butch Davis"
wrote:

As of late this month Lowrance LMS-337C DF GPS will be available as an
LMS-339C DF IGPS with internal antenna. It is recommended fro use on open
cockpit or center console boats.

For cost and ease of installation reasons I'd prefer to use an internal
antenna unit. Seems to me that it would make little to no difference in
satellite reception on my center console boat.

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An external antenna will almost certainly give you a stronger more
reliable signal assuming that it is mounted in the clear. That said,
you may very well be happy with the internal antenna. If you have a
handheld GPS with an internal antenna you could temporarily put it in
about the same place as you are proposing for the Lowrance and see how
it performs there.