Reply
 
Thread Tools Search this Thread
 
Old 11 November 2018, 02:21   #61
Member
 
Last Tango's Avatar
 
Country: UK - Scotland
Town: Denny
Boat name: Hebridean Storm
Make: Coastline
Length: 6m +
Engine: Mariner F150
MMSI: 235107505
Join Date: Mar 2013
Posts: 1,346
Just an update.....

I elected to fit a Matsutec hp 33A, seemed to have been around a while, good price, IPX56, very nice display and lots of features. With the huge variance in price I bought about "middle of the range" at £330 through Amazon from a UK supplier. (That was fortunate).

It's initial performance, fitted with a pukka 1mtr 161/162 AIS rail mounted aerial on the windscreen frame, was poor. When I change to a cheap (£26) VHF Aerial on the "A" frame the range trebled which was closer to what I was expecting.

Moving on two months it started playing up. Intermittently wouldn't power up....leave it for an hour try again and it would work. Similarly sometimes it wouldn't power off. I don't know for certain the cause but when we get that kind of problem with the medical equipment at work it's virtually always down to fluid ingress in the keypads.

A brief communication with Amazon, we were sent a "returns" shipping label and fully refunded by the vendor as soon as the parcel was posted despite being well beyond the thirty day return window. They didn't even wait to receive it so full marks to them.

I've now fitted an Icom MA-500TR. Cost nearly twice what I paid for the Matsutec, the display is not as good, it doesn't have all the nice features and worst of all it didn't fit the hole the other one came out of....perspex bezel made to suit. However it's IPX67, warrantied for three years and (initial tests) it's looking like it's performance is way better............here's hoping.
__________________

__________________
Last Tango is offline   Reply With Quote
Old 11 November 2018, 07:11   #62
Member
 
Country: UK - England
Length: 3m +
Join Date: Sep 2008
Posts: 2,392
Not sure ip56 on a rib is going to cut it...
__________________

__________________
ShinyShoe is offline   Reply With Quote
Old 11 November 2018, 09:08   #63
Member
 
Last Tango's Avatar
 
Country: UK - Scotland
Town: Denny
Boat name: Hebridean Storm
Make: Coastline
Length: 6m +
Engine: Mariner F150
MMSI: 235107505
Join Date: Mar 2013
Posts: 1,346
Quote:
Originally Posted by ShinyShoe View Post
Not sure ip56 on a rib is going to cut it...
From my suspicion I'm thinking that's probably the case. However the definition of it's resilience is "high pressure jets of water from any direction". I've never had salt spray anywhere near the console instruments so the worst it's had to contend with is a bit of rain and even at that it was panel mounted and sheltered by the windscreen.
It was maybe nothing to do with water but as they say.....walks like duck... ?
__________________
Last Tango is offline   Reply With Quote
Old 11 November 2018, 12:14   #64
Member
 
Country: UK - England
Length: 3m +
Join Date: Sep 2008
Posts: 2,392
Yeah but if you look at the test spec, even for IPx7 it needs to survive 30mins immersion in water at a depth of 1m.

But it doesn't need to work immediately. It can be left to dry.

The test is with water, not salt water.

I wouldn't expect a piece of paper on the console to come off dry... But it will depend on consoles, boats and conditions...
__________________
ShinyShoe is offline   Reply With Quote
Old 11 November 2018, 12:55   #65
Member
 
Last Tango's Avatar
 
Country: UK - Scotland
Town: Denny
Boat name: Hebridean Storm
Make: Coastline
Length: 6m +
Engine: Mariner F150
MMSI: 235107505
Join Date: Mar 2013
Posts: 1,346
Quote:
Originally Posted by ShinyShoe View Post
Yeah but if you look at the test spec, even for IPx7 it needs to survive 30mins immersion in water at a depth of 1m.

But it doesn't need to work immediately. It can be left to dry.

The test is with water, not salt water.

I wouldn't expect a piece of paper on the console to come off dry... But it will depend on consoles, boats and conditions...
I'm pretty confident IPx7 will do. If it's not properly sealed and water gets in it's not going to dry inside and corrosion on PCBs would pretty soon kill it. All the connectors are on the back of the unit and inside the console (as was the Matsutec.) so should be ok. Regards the salt water issue there is no sea spray at all ever hits the instruments on the console and to be honest I would expect the paper to come off more or less dry. Doesn't stop rain falling on it when the boat is stationary but IPx56 should deal with that.
My inclination is the manufacturer has not actually tested this at all. The unit is sold as a receiver only and is CE marked but the transceiver variant is not.

As I said it could be nothing to do with ingress but I was not going to buy another one the same. ;
__________________
Last Tango is offline   Reply With Quote
Old 14 November 2018, 07:12   #66
RIBnet supporter
 
gotchiguy's Avatar
 
Country: UK - England
Town: Dinard, Brittany
Boat name: Into the Red
Make: Osprey Vipermax
Length: 7m +
Engine: Evinrude E-tec 250HO
MMSI: 235 076 114
Join Date: Apr 2009
Posts: 1,950
RIBase
Having had AIS for about 5 years now over the past couple of years there has been a big increase in the number of vessels fitting it, and indeed having it turned on.

I would now be pretty confident that most things over 10m will be transponding, and certainly most commercial boats although there continue to be reports of trawlers turning it off to avoid giving their favourite spots away to competitors.

Radar on the other hand does have the added factor of helping you be sure of your position - if the GPS fails you can cross reference coastal echoes to a chart without too much difficulty.

I don't think there's much point in fitting an rx only unit nowadays, the price different to a transponder has come down so much and you have to fit an antenna anyway.
__________________
gotchiguy is offline   Reply With Quote
Old 20 November 2018, 18:34   #67
Member
 
Join Date: Jun 2010
Posts: 2,934
I've got this coming this week to replace my AIS receiver, looks decent on paper spec wise but time will tell.

Anyone got one per chance?

https://shop.marinetraffic.com/ais-t...0-class-b.html
__________________
Xk59D is offline   Reply With Quote
Old 21 November 2018, 04:40   #68
Member
 
Last Tango's Avatar
 
Country: UK - Scotland
Town: Denny
Boat name: Hebridean Storm
Make: Coastline
Length: 6m +
Engine: Mariner F150
MMSI: 235107505
Join Date: Mar 2013
Posts: 1,346
Regards our discussion about how the Class B AIS info finds it's way onto the internet........

https://www.marinetraffic.com/en/p/expand-coverage


__________________
Last Tango is offline   Reply With Quote
Old 21 November 2018, 05:04   #69
Member
 
Join Date: Jun 2010
Posts: 2,934
You called that correctly, nice.

So given I couldn't see part of your trip and it went to 30 min updates there is a coverage gap in that loch, probably both lochs actually? If the receiver is at KIP, as we speculated, that would maybe tie in as you were probably about 10 miles from KIP when you and breeze stopped updating.

Did you show up on it when you were testing it at home?

Next question is how class A gets on there in middle of an ocean.
__________________
Xk59D is offline   Reply With Quote
Old 21 November 2018, 07:27   #70
RIBnet Supporter
 
willk's Avatar
 
Country: Ireland
Make: Redbay Boats
Length: 9m +
Engine: 370hp
Join Date: Feb 2008
Posts: 13,506
RIBase
Quote:
Originally Posted by Xk59D View Post
Next question is how class A gets on there in middle of an ocean.
Satellite picks up the vhf AIS and downloads. All commercial based. Marine Traffic show the most basic data as a sales tool. Monkey see monkey want.
__________________

__________________
.
willk is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 12:46.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.