Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 17-06-2019, 05:21   #16
Bailing as fast as I can.
 
GILow's Avatar

Join Date: Sep 2008
Location: Adelaide, South Australia
Boat: Swanson 42
Posts: 6,663
Re: Whatís Going on with this AIS Target?

Quote:
Originally Posted by DefinitelyMe View Post
Only downside is that the CPA alarm doesnít work. Not a problem for us because we have a separate receiver on which it does work, but if yours is the same and itís the only AIS you have it could be a major disappointment. Iíd read some reviews before I bought it which said similar things. Fingers crossed yours works OK.
OK, I've googled all I can for the problem, no luck so far. Do you remember where you saw those reviews?
__________________

__________________
Count-down has commenced.
GILow is online now   Reply With Quote
Old 17-06-2019, 06:09   #17
Registered User
 
sy_gilana's Avatar

Join Date: Jan 2005
Location: On board
Boat: Van de Stadt 50'
Posts: 1,329
Send a message via Skype™ to sy_gilana
Re: Whatís Going on with this AIS Target?

My CPA alarm on my Matsutec is working.
That info is generated on the target vessel, the error is on their side. Your system is only reporting the data received.
__________________

__________________
Tight sheets to ya.
https://gilana.org
sy_gilana is offline   Reply With Quote
Old 17-06-2019, 06:37   #18
Bailing as fast as I can.
 
GILow's Avatar

Join Date: Sep 2008
Location: Adelaide, South Australia
Boat: Swanson 42
Posts: 6,663
Re: Whatís Going on with this AIS Target?

Quote:
Originally Posted by sy_gilana View Post
My CPA alarm on my Matsutec is working.
That info is generated on the target vessel, the error is on their side. Your system is only reporting the data received.
Umm.... no... not sure that's the logic.

CPA is a calculation that your own device makes based on the signals it is receiving. Sure, it uses info broadcast from other boats, but ultimately it has to combine that information with

a) your own position and speed
then
b) compare this with the CPA alarm threshold you have set.

So if your own device is able to see and plot other boats ok, then a failure of the CPA alarm is a problem with the device.

Still, it is good to hear your CPA alarm works. Mine appears to, but I would like to know more about who had problems and in what circumstances.

It MAY be an early software release problem (like the problem with the early release software forgetting the MMSI) or it may be traffic congestion problem (I have read some reports of AIS receivers failing to process all of the local vessels when there is too much traffic, including some problems with fishermen using unconfigured AIS transmitters to track their nets.)

I certainly did not run into this issue in any of the reading I did before I bought the Matsutec, so I am kinda surprised. But if I can find out more from DefinatelyMe I may be able to figure out what, if anything, needs to be done to mitigate the issue.

Matt
__________________
Count-down has commenced.
GILow is online now   Reply With Quote
Old 17-06-2019, 08:33   #19
Registered User
 
sy_gilana's Avatar

Join Date: Jan 2005
Location: On board
Boat: Van de Stadt 50'
Posts: 1,329
Send a message via Skype™ to sy_gilana
Re: Whatís Going on with this AIS Target?

Two separate issues.
1 400 degree reported course.
2 CPA Alarm.


item 1 is not an issue on receiver.
item 2 is.
__________________
Tight sheets to ya.
https://gilana.org
sy_gilana is offline   Reply With Quote
Old 17-06-2019, 15:19   #20
Marine Service Provider
 
Emmalina's Avatar

Join Date: Jan 2012
Location: Thailand
Boat: Herreshoff Caribbean 50
Posts: 673
Re: Whatís Going on with this AIS Target?

I put an external buzzed on mine during install and it has worked fine. Lots of silly AIS messages from fishing net markers though ! Started seeing them in the Indian ocean now they seem to be all over !
__________________
Steve .. It was the last one that did this !
Emmalina is offline   Reply With Quote
Old 17-06-2019, 15:31   #21
Registered User

Join Date: Jul 2005
Location: Bellingham
Boat: Outbound 44
Posts: 8,250
Re: Whatís Going on with this AIS Target?

I asked earlier if the lat/long was correct. It is in the S Atlantic.
The MMSI listed does not look valid. An MMSI starting with 1 should be a SAR aircraft, but it should be 111xxxxxx, not 118xxxxxx
__________________
Paul
Paul L is offline   Reply With Quote
Old 17-06-2019, 22:49   #22
Bailing as fast as I can.
 
GILow's Avatar

Join Date: Sep 2008
Location: Adelaide, South Australia
Boat: Swanson 42
Posts: 6,663
Re: Whatís Going on with this AIS Target?

Quote:
Originally Posted by Emmalina View Post
I put an external buzzed on mine during install and it has worked fine. Lots of silly AIS messages from fishing net markers though ! Started seeing them in the Indian ocean now they seem to be all over !
If I remember correctly, yours was the HP528A or something similar? Not the HP33A?
__________________
Count-down has commenced.
GILow is online now   Reply With Quote
Old 17-06-2019, 22:50   #23
Bailing as fast as I can.
 
GILow's Avatar

Join Date: Sep 2008
Location: Adelaide, South Australia
Boat: Swanson 42
Posts: 6,663
Re: Whatís Going on with this AIS Target?

Quote:
Originally Posted by sy_gilana View Post
Two separate issues.
1 400 degree reported course.
2 CPA Alarm.


item 1 is not an issue on receiver.
item 2 is.
Sorry, I think we were talking at cross purposes.

All good, but would still love to know more about the CPA alarm problem listed by DefinatelyMe. Cannot find a mention of it anywhere.
__________________
Count-down has commenced.
GILow is online now   Reply With Quote
Old 18-06-2019, 14:42   #24
Registered User

Join Date: May 2013
Location: Mangareva, French Polynesia
Boat: Heritage West Indies 36
Posts: 760
Whatís Going on with this AIS Target?

Quote:
Originally Posted by Paul L View Post
I asked earlier if the lat/long was correct. It is in the S Atlantic.

The MMSI listed does not look valid. An MMSI starting with 1 should be a SAR aircraft, but it should be 111xxxxxx, not 118xxxxxx


Yes, position is correct. If I remember correctly there was more than one target and I think it was something to do with fishing boats. Reported range was less than 1 mile for one of them and I still couldnít see anything even with a close search with binoculars, so probably a small fishing buoy reporting bad info.

As for the MMSI no. Iím betting the fishermen just made up whatever number they wanted to put into their transponder.
DefinitelyMe is offline   Reply With Quote
Old 18-06-2019, 14:57   #25
Registered User

Join Date: May 2013
Location: Mangareva, French Polynesia
Boat: Heritage West Indies 36
Posts: 760
Whatís Going on with this AIS Target?

Quote:
Originally Posted by GILow View Post
Sorry, I think we were talking at cross purposes.



All good, but would still love to know more about the CPA alarm problem listed by DefinatelyMe. Cannot find a mention of it anywhere.


I think it was two references that I read which both mentioned a non-functioning alarm. I think they were on the Ali Express website and I vaguely remember that the reviews were both from people in Russia.

Edit: I just went to the AliExpress website to try to find the reviews for you but it seems they no longer have the Matsutec HP-33(A?) listed there at all.

It could just be user error, potentially on all counts (Iím setting a value in the ĎCPAí field of the Ďmenu > AISí screen). Is that correct? Very glad to hear yours are all working. I still canít get mine to work but for my part I donít mind so much. Our radio also has an AIS receiver so we just set the alarm on that.
DefinitelyMe is offline   Reply With Quote
Old 18-06-2019, 19:09   #26
Bailing as fast as I can.
 
GILow's Avatar

Join Date: Sep 2008
Location: Adelaide, South Australia
Boat: Swanson 42
Posts: 6,663
Re: Whatís Going on with this AIS Target?

Quote:
Originally Posted by DefinitelyMe View Post
I think it was two references that I read which both mentioned a non-functioning alarm. I think they were on the Ali Express website and I vaguely remember that the reviews were both from people in Russia.

Edit: I just went to the AliExpress website to try to find the reviews for you but it seems they no longer have the Matsutec HP-33(A?) listed there at all.

It could just be user error, potentially on all counts (Iím setting a value in the ĎCPAí field of the Ďmenu > AISí screen). Is that correct? Very glad to hear yours are all working. I still canít get mine to work but for my part I donít mind so much. Our radio also has an AIS receiver so we just set the alarm on that.


It does look like the 33A has been superceded now by the 528A.

I will double check my menu settings next time I am on the boat but just a quick sanity check...

A) do any of your audible alarms work and do any of the the visual alarms work?


B) if so, does the TCPA alarm work?

C) not that it should matter, but do you have the external buzzer turned on or off? (I can imagine a programming logic that silences the inbuilt audio alarm when the external buzzer is on. )

Finally, do you know which version of the firmware you are running? (I donít actually remember my version but I did manage to find a reference somewhere and mine was up to date. There are some older versions with various bugs.)
__________________
Count-down has commenced.
GILow is online now   Reply With Quote
Old 19-06-2019, 19:15   #27
Registered User

Join Date: May 2013
Location: Mangareva, French Polynesia
Boat: Heritage West Indies 36
Posts: 760
Whatís Going on with this AIS Target?

Quote:
Originally Posted by GILow View Post
It does look like the 33A has been superceded now by the 528A.

I will double check my menu settings next time I am on the boat but just a quick sanity check...

A) do any of your audible alarms work and do any of the the visual alarms work?


B) if so, does the TCPA alarm work?

C) not that it should matter, but do you have the external buzzer turned on or off? (I can imagine a programming logic that silences the inbuilt audio alarm when the external buzzer is on. )

Finally, do you know which version of the firmware you are running? (I donít actually remember my version but I did manage to find a reference somewhere and mine was up to date. There are some older versions with various bugs.)


Hmmm. Well, yes, I have heard the alarm for Ďno gps fixí. Tomorrow Iíll have a play around with the tcpa alarm and see if I can get that to sound.

As for the external buzzer........ I wasnít aware that there was one! So, yes itís a possibility. Another thing to research. Thanks very much for the suggestions. You certainly seem to know what youíre talking about.
DefinitelyMe is offline   Reply With Quote
Old 19-06-2019, 19:44   #28
Bailing as fast as I can.
 
GILow's Avatar

Join Date: Sep 2008
Location: Adelaide, South Australia
Boat: Swanson 42
Posts: 6,663
Re: Whatís Going on with this AIS Target?

Quote:
Originally Posted by DefinitelyMe View Post
Hmmm. Well, yes, I have heard the alarm for Ďno gps fixí. Tomorrow Iíll have a play around with the tcpa alarm and see if I can get that to sound.

Certainly worth having

As for the external buzzer........ I wasnít aware that there was one!

It's a circuit for an external alarm. I have not tested it yet, but I want to, because my AIS is in the deck house and if I am down below I may miss the built in alarm, which isn't exactly loud, at least to my old ears.

So, yes itís a possibility. Another thing to research. Thanks very much for the suggestions. You certainly seem to know what youíre talking about.

I can fool some of the people some of the time...
_____
__________________
Count-down has commenced.
GILow is online now   Reply With Quote
Old 19-06-2019, 20:10   #29
Registered User
 
Freedom45's Avatar

Join Date: Jan 2012
Location: Somewhere in the Pacific
Boat: Kristen 52
Posts: 295
Re: Whatís Going on with this AIS Target?

I saw the same thing yesterday, a fleet of Chinese fishing boats leaving the lagoon, all of the icons were pointing the opposite way they were heading and info showed 480 degree heading. The course predictor was correct.
This was on opencpn, the icons were correct on chart plotter ......
__________________

__________________
I Sail, Therefor I ARRrrr...
Freedom45 is offline   Reply With Quote
Reply

Tags
ais

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
AIS target list window does not appear Gaia2013 OpenCPN 2 06-05-2013 10:00
Virtual AIS target useris OpenCPN 0 06-04-2013 12:51
Maxsea 10.3.2.1 does not display AIS Class B target names svBeBe Marine Electronics 7 17-03-2013 08:59
OpenCPN v2.5.0 Unable to Display AIS Target Query Window jsavage Navigation 4 28-11-2011 01:35
AIS Target Mouseover Data idpnd OpenCPN 11 18-06-2010 03:34

Advertise Here


All times are GMT -7. The time now is 02:38.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.