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Garmin Weather Recievers

Old 08-29-2011, 05:15 PM
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What is the real difference between the GLD-30a and the GXM-51 besides the external box and cost?
Old 08-29-2011, 05:23 PM
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None that I am aware of. The 30 has the black box and the 51 has all the electronics in the antenna. The 51 is the newer design.
Old 08-29-2011, 05:25 PM
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Gxm 51 uses nema 2000 to connect to your system, plus the gxm 51 is a smart antenna it requires no black box. The gdl 31 requires an antenna in addition to the unit.
Old 08-29-2011, 05:31 PM
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thanks guys.

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