AIS/ Vesper XB-8000

[fmstuart]

I am ordering a Vesper XB-8000 AIS Transponder. It appears that there is an option to either use a separate GPS antenna or to use a splitter to connect to the VHF antenna. Are there any advantages to one over the other as far as range and reliability? Will using a splitter reduce the power of the VHF antenna?

Thank you!


Forrest Stuart
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[Gin]

Hi Stuart,

The Vesper splitter has a strong reputation for its quality. I have had it in two installations, both of which have worked without a hitch. The one advantage I know of to using a separate antenna (and so no splitter) is that AIS antennas are more precisely tuned for the AIS frequency range. But I’m no expert on all that. The one thing I can speak to is my experience using the splitter, which has been totally positive.

I recommend calling the folks at Milltechmarine.come and asking them. On my first Vesper purchase several years ago, I was really impressed with them. I think they will give you sound guidance. The thing to be aware of — from the small amount I understand — is that mounting multiple antennas in proximity to each other (like, within 10 feet) can create issues of their own. A splitter avoids those problems. On a lot of our boats, there is not a lot of topside real estate for separating antennas.

You will like the XB-8000. It is a great unit. Good luck!

Gini

 

[ixlr8]

I am ordering a Vesper XB-8000 AIS Transponder. It appears that there is an option to either use a separate GPS antenna or to use a splitter to connect to the VHF antenna. Are there any advantages to one over the other as far as range and reliability? Will using a splitter reduce the power of the VHF antenna?

Thank you!

Forrest Stuart

You need a separate antenna for the GPS.
You can use a separate antenna for the AIS or split the signal to the VHF antenna. I choose to use a separate antenna for the AIS signal to maximize the signal range. I don't know how much difference in signal strength there is using an AIS antenna vs the VHF antenna, it may not be meaningful. The other issue, at least with the Garmin system I have, you can't use the VHF radio if the AIS is transmitting and vis versa. The AIS broadcast time is very short and you may not notice the slight interruption to the VHF signal.

 

[Kaptajnen]

We had Monkey Fist in Seattle install the Vesper XB-8000. We opted for the active Vesper GPS Antenna and Splitter, since we also removed the stock VHF antenna. This combo works perfectly. The installation required a new cable from the roof to the Vesper AIS device behind the helm.