whiteshythe
Well-Known Member
Yes, the Fast Heading (Rate Gyro) info makes a big improvement to the MARPA function.
Steve
Raymarine C120 classic plotter and AIS
- Thread starter westhinder
- Start date
Yes, the Fast Heading (Rate Gyro) info makes a big improvement to the MARPA function.
Steve
DipperToo
Well-Known Member
My old C80 now has a McMurdo M10 AIS transponder which takes the Raymarine fast heading data NMEA from the course computer and multiplexes it onto the AIS output. The C80 NMEA at 38400 seems to manage things OK, but as previously mentioned in an earlier post to this thread, newer AIS sentences related to ATNs and MOB are not managed properly in these older units which cannot be updated (as far as I know).
pvb
Well-Known Member
It's worth keeping the software up to date. The last software revision, in 2012, enhanced AIS performance. But sadly the C Classic is rather old now in electronics terms, things have moved on so much and so fast.
westhinder
Well-Known Member
Cheers guys!
Your experiences have somewhat allayed my fears. I think that I will after all settle for the Raymarine 650 transceiver and trust the plotter does not grind to a halt. After all, there is a lot to be said in favour of being seen on AIS rather than just watching the others.
I'll report back next season when it's all up and running.
Your experiences have somewhat allayed my fears. I think that I will after all settle for the Raymarine 650 transceiver and trust the plotter does not grind to a halt. After all, there is a lot to be said in favour of being seen on AIS rather than just watching the others.
I'll report back next season when it's all up and running.
NOHOH
Well-Known Member
Have a look at one of these http://brookhouseonline.com/pdf files/Mux_AIS_C.pdf
It Solved the C120 AIS problem for me... and these Kiwis are a delight to deal with.
It Solved the C120 AIS problem for me... and these Kiwis are a delight to deal with.
RichardS
N/A
Trying to find the UK price of those things is like looking for a needle in a haystack!
Richard
pvb
Well-Known Member
If you're thinking of your safety, there's more to be said for spending the money on an active radar reflector.
westhinder
Well-Known Member
That's a very interesting bit of kit.
But as I only need the AIS input to the C120, and have no need for the NMEA output from the C120 to anything else, I do not think I have a need for it. My radar is too ancient to be linked to any plotter, so no need for the fast heading data. And the autopilot is not linked to the plotter either, as a matter of principle: on my boats any course changes must be processed by a human brain, not just the electronics.
The day will come when I bite the bullet and get a complete electronics refit: instruments, radar and plotter, but I hope to postpone that for a few years and save up in the meantime
westhinder
Well-Known Member
Reading the disappointing results of practical radar reflector tests, I'm sure you are right. It is on my list, but lower than the AIS. AIS is a great help for less experienced watchkeepers to interpret what is around them, especially at night.
pvb
Well-Known Member
Yes, but you don't need a transceiver for that! A simple AIS receiver will suffice. If you want to increase the chances of being noticed by shipping, an active radar reflector is the best option. Ships don't necessarily monitor AIS very closely, and they can (and do) filter out Class B targets, but every ship keeps an eye on the radar.
RichardS
N/A
But not this one
:http://www.ybw.com/forums/showthrea...-AIS-transmitter-and-not-just-a-receiver-quot
Richard
pvb
Well-Known Member
Ridiculous recommendation, in the light of the poster's view " I also got the impression that a watch was not being kept on the ferry..."