GPS antenna question ?

[Lightwave395]

I've ground to a bit of a confusing halt...

My cautious electronics 'upgrading' continues, I'm planning to install 2 GPS antenna (antenni ? ), one for the main MFD / chartplotter and one dedicated separate Digital Yacht Services GV30 combination GPS / VHS antenna for the AIS transponder

In terms of configuration, I have a small 4 device fledgling N2K network consisting of a Raymarine MFD (with internal GPS and N2K adaptor cable), a Standard Horizon VHS with internal GPS and N2K , a Quark GPS antenna with N2K and a Simrad NAIS 400 Transponder (with N2K and the GV30 GPS and VHF antenna connected directly).

I'm aware that with the Quark GPS in the N2K network I need to disable both the Raymarine internal GPS and the VHF internal GPS but I'm unsure whether the transponder's own dedicated GPS may yet clash with the Quark GPS data, or, perhaps as the transponder is on the N2K network will it pickup the GPS from the Quark antenna if I don't use the dedicated GV30

Also, is there a distance consideration I should conform to in terms of the physical position of both antenna, which will be mounted on the pushpit - should I put one on each side to maintain a metre + distance or can they both be on the same side (if I need two as in previous paragraph

 

[VicS]

I've ground to a bit of a confusing halt...

My cautious electronics 'upgrading' continues, I'm planning to install 2 GPS antenna (antenni ? ), one for the main MFD / chartplotter and one dedicated separate Digital Yacht Services GV30 combination GPS / VHS antenna for the AIS transponder

Antennae, but can't help with the question .

 

[PaulRainbow]

I've ground to a bit of a confusing halt...

My cautious electronics 'upgrading' continues, I'm planning to install 2 GPS antenna (antenni ? ), one for the main MFD / chartplotter and one dedicated separate Digital Yacht Services GV30 combination GPS / VHS antenna for the AIS transponder

In terms of configuration, I have a small 4 device fledgling N2K network consisting of a Raymarine MFD (with internal GPS and N2K adaptor cable), a Standard Horizon VHS with internal GPS and N2K , a Quark GPS antenna with N2K and a Simrad NAIS 400 Transponder (with N2K and the GV30 GPS and VHF antenna connected directly).

I'm aware that with the Quark GPS in the N2K network I need to disable both the Raymarine internal GPS and the VHF internal GPS but I'm unsure whether the transponder's own dedicated GPS may yet clash with the Quark GPS data, or, perhaps as the transponder is on the N2K network will it pickup the GPS from the Quark antenna if I don't use the dedicated GV30

Also, is there a distance consideration I should conform to in terms of the physical position of both antenna, which will be mounted on the pushpit - should I put one on each side to maintain a metre + distance or can they both be on the same side (if I need two as in previous paragraph

As all devices are on the N2K network, i can't see why you'd fit the Quark GPS. The AIS will put GPS data on the network for everything else to use. Or, you can allow the VHF and MFD to use their own internal GPS and stop the AIS from putting GPS on the network. However you choose to go, there should be no need to fit the Quark GPS.

The AIS will transmit GPS data to the N2K network, but it will not receive it, it has to have it's own, dedicated, GPS.

 

[Lightwave395]

As all devices are on the N2K network, i can't see why you fit the Quark GPS. The AIS will put GPS data on the network for everything else to use. Or, you can allow the VHF and MFD to use their own internal GPS and stop the AIS from putting GPS on the network. However you choose to go, there should be no need to fit the Quark GPS.

The AIS will transmit GPS data to the N2K network, but it will not receive it, it has to have it's own, dedicated, GPS.

Thank you Paul, I'd hoped that might be the case, one less hole to drill, one less cable to run !

 

[st599]

Antennae, but can't help with the question .

Antennas - it's customary in electronic engineering to pluralise everything with an s - antennas, computer mouses etc.

As Paul says, multiple GPS sources can cause confusion as the MFD will be calculating some GUI outputs based on the most recently received signals - adding two GPS feeds can increase the inaccuracy and, if the MFD is poor at filtering, make things like SOG or COG appear to vary.

 

[snowbird30ds]

As Paul says, the ais will use its own gps whatever, it's part of the specs for ais, everything else will be able to use it, no need for multiples.