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Old 13-02-2020, 12:46   #31
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Re: Vesper AIS SP-160 "relay/splitter" test results, lab/real world

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FWIW,

1.Have yet to see a smaller yacht with a class A AIS. Occasional megayachts, yes, but they are really just fancy small ships!

I have a Class A on my 26 foot Pearson Ariel. MMSI 367431840. No one has called her a "megayacht." Not even me in my dreams.
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Old 13-02-2020, 13:37   #32
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Re: Vesper AIS SP-160 "relay/splitter" test results, lab/real world

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I have a Class A on my 26 foot Pearson Ariel. MMSI 367431840. No one has called her a "megayacht." Not even me in my dreams.
Well, bully for you! But my statement is still true: I've never seen your yacht.

Seriously, the use of class A AIS on private yachts of normal cruiser size is damn rare and offers little advantage to the typical yottie/cruiser over the old class B, and IMO zero useful advantage over the new B+.

YMMV.

Jim
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Old 13-02-2020, 22:35   #33
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Re: Vesper AIS SP-160 "relay/splitter" test results, lab/real world

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Originally Posted by Jim Cate View Post
Well, bully for you! But my statement is still true: I've never seen your yacht.

Seriously, the use of class A AIS on private yachts of normal cruiser size is damn rare and offers little advantage to the typical yottie/cruiser over the old class B, and IMO zero useful advantage over the new B+.

YMMV.

Jim

I was just joking with you, Jim. "Never say never - the world is full of oddities."

I agree with your assertion. I don't regret provisioning my Class A, but I got it nearly free just as I was about to upgrade my wonky CSTDMA Class B. I do appreciate the much better breakout box for interfacing it. My chief complaint with many of the transponders intended for recreational vessels is being confronted by a bundle of wires as opposed to a sealed breakout box with proper labeled terminals for interfacing. And I consider having an integral backup GPS receiver to be an advantage.

The extra power of the Class A is nearly irrelevant, the higher frequency of transmissions isn't relevant when comparing 2 seconds (Class A) to 5 seconds (Class B+), and the concern over Class Bs being "filtered out" is a myth. I've seen no evidence that Class A gets more attention than Class B from other vessels. I have made use of the vessel-to-vessel texting capability of Class A, but that's just a "nice to have" feature and used only when the other vessel texts me first. Being able to designate your destination port is also a nice to have. If advising someone else, I'd say: unless you're a radio geek like me, get a modern Class "B+" (SOTDMA) transponder.
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Old 14-02-2020, 03:20   #34
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Re: Vesper AIS SP-160 "relay/splitter" test results, lab/real world

Thank you, thank you, thank you to the OP for the amazing post. My life will be so much simpler knowing that signal loss at a connector is essentially trivial. I need to replace a VHF cable and antenna and was not looking forward to running a continuous cable from the masthead to the radio.

I also have a Vesper splitter and XB8000 and am delighted with their performance. Now I donít need to worry about the splitter which some have told me was a bad idea.

Thanks again- much appreciated!
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