Raymarine GPS losing fix

stuartwineberg

stuartwineberg

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I have E120 and E80 networked on a 24 volt system. 120 GPS aerial. Since upgrading to V4.2 software, every couple of hours the system loses GPS fix and wont refind it. If the system is depowered (all of it - plotters, GPS, tridata) the system finds fix immediately and runs for the next hour or so. Raymarine tech support think the GPS aerial is dying but that seems odd to me, why would it refind lock on a reboot. Also bad connection seems unlikely for the same reason. Voltage and current on the system is fine - any thoughts from the experts out there
 
A couple of weeks ago I was sailing due west a couple of miles south of Bolt Head. Without warning my Raymarine RC400 plotter relocated me about 5 miles north. The strange thing is it continued to maintain a new course showing me sailing through the fields of Devon with the correct SOG and heading.

Raymarine has lost the plot corporately speaking I wish a credible commercial rival would appear in the market and bring Raymarine to its senses.
 
A similar thing used to happen in this same area in the days of Decca. You would be closing in, at 5 knots, on Bolt Head to go into Salcombe, and all of a sudden you would be doing 40 or so knots. This happened because the master and a slave came in line. You would get to withing a mile or so before things returned to normal.

But what is the reason with GPS - are there some strange Decca-like signals cocking up the GPS signals????
 
Stuart,

I had exactly the same thing happen to me after upgrading the software on my E80. Checked all the connections etc, even returned the E80 to previous software version, all to no avail.

Raymarine advised the GPS was probably faulty as they told you.

I fitted a new RS125 GPS and it has worked perfectly ever since.

However it is a strange coincidence that we have both had a RS120 fail very soon after upgrading the software - I wonder if Raymarine are hiding something!!
 
Interesting - especially the common experience following the software upgrade - anyone else experienced that? I wonder if some aspect of the new code is only suitable for the newer GPS receiver?

I will check the GPS connection if I can find it. The aerial definitely doesnt go into the E120 - perhaps it is wired into the E80 - does the GPS normally go directly into the plotter on these set ups or into the course computer?

Cheers

Stuart
 
Garmin have! Superior plotters by a country mile imho, more intuitive to use, better PC planning software, radar, sonar, and now full instrumentation. I have both Garmin and Raymarine installed, but only use the raymarine for radar and always the Garmin for plotting. The RM plotter is rather awkward and not as intuitive to use imho. If they were cars Garmin seems like the Audi/Porsche/Merc/BMW of plotters with the reliability of Toyota and Nissan, and RM seems to be the Renault/Peugot/Citroen with the reliability of Jag and Range Rover!!! /forums/images/graemlins/wink.gif
 
Stuart,

The GPS should be on the Sea-Talk bus, hence it is not connected directly to the E series displays. The GPS will be connected into a junction box or a SEA-Talk connector block.
It might also be connected directly to the sea-talk connections on your course computer.
 
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