The GA200 is a passive antenna, and is
therefore not a Seatalkng device. It just presents a stronger RF
signal to the AIS than the AIS internal antenna.
The fact that the AIS-700 doesn't show
as an alternate GNSS source is a concern.? Does it show up as a
Seatalkng device and present data to the MFD?
On 5/9/2025 2:31 PM, Carter Brey via
groups.io wrote:
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Hi, folks,
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I just finished installation of a Raymarine AIS-700 and the
Raymarine passive GPS antenna, the GA-200. I have the VHF radio
(a Standard Horizon GX-2100) also connected to the AIS-700 which
has its own internal antenna splitter.
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The GA-200 antenna is mounted in an ideal location high up on
the dinghy davits with a clear view of the sky. Its cable is
connected to the AIS-700, NOT directly to the MFD.?
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The AIS-700 is connected to the Seatalkng network.?
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I booted up the MFD and assumed that I would see either the
AIS-700 or the GA-200 as an alternate GPS data source, but it
only lists the internal GPS of the MFD.?
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On the chart, the well-populated satellite list, boat
location and AIS target list are all correct. Everything seems
perfectly copacetic.
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The MFD is a Raymarine eS98 running Lighthouse 3.
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All the other data sources (wind, speed, AP control unit etc)
are correct.
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I checked and rechecked the GA-200 cable connection to the
AIS unit.
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I also disconnected the GA-200 cable from the AIS-700 and
connected it directly to the appropriate port on the back of the
MFD. Same result: the GA-200 did not appear as a GPS data
source.
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Before I start laboriously dismounting the GA-200 to test
continuity, here is my question: is what I'm seeing (or not
seeing) the result of the fact that the GA-200 is a passive
antenna meant only to boost the signal to the internal MFD
processor? So that the MFD does not consider it a separate data
source?
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May thanks for patiently wading through this.
?
Carter Brey
Tartan 40 "Lyra"
City Island, NY
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