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I have a lowrance globalmap 5150c chart plotter on a boat , i cannot get the nmea 0183 to work with the dsc vhf which is an m-tec mt500 the vhf says no gps signal when connected , i have changed the vhf for a new one but still the same , i have double checked all the wiring connections all ok , i am getting 2.5v pulse at vhf with wires disconnected from vhf but when connected this drops to 0.5v can you suggest what the problem might be .

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Posted on Jan 02, 2017

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SOURCE: Lowrance Globalmap 2000

The screen is the weak point of the 2000's.  I have one myself, and without warning a number of "lines" appeared on the screen, getting progressively worse over time.  
Perusing other forums, it seems we're not alone.  Unfortunately the only "solution" I've found thus far is to purchase a new head unit (eBay is a terrific source!).

Posted on Jun 01, 2008

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SOURCE: Communication to Offshore Navigator light

The internal memory battery is dieing. It will eventually stop completely unless you get a new battery installed.

Posted on Aug 11, 2008

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SOURCE: Connecting Garmin GPS 152 to VHF Radio Silva S15


From the S15 owners manual (Page 46):

The RED wire is GPS data,
The green wire is GPS ground.

Hope this helps and good luck!

Posted on May 08, 2010

  • 77202 Answers

SOURCE: I have a Simrad CP33

Here is a link to the operation manual of the GPS plotter in PDF, it is a large file (3.25MB) so allow time for it to download.

Posted on Sep 27, 2010

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SOURCE: Lowrance Globalmap 100... Problem: When you turn

1. PLEASE do not forget to award your ACCEPTED answer
2. here is a quick reference for your GPS
3. Be sure to completely charge your unit before turning it back on
4. If you still have problems with AUTOMATIC shutdown after turning on, the problem is most likely related to the batteries.
5. If the unit has been dropped, you may very well have additional problems aside from the battery.
PLEASE respond to me for more help if need be, username bbl242003

Posted on Jan 09, 2011

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You can place the SD card into the slot beside the chart card.

With the SD card in the GlobalMap unit by itself (take the chart card out), press MENU twice and choose BROWSE FILES. Does the unit indicate that an SD card is present? If yes, the card is working fine in that slot. Try the same thing in the other slot. If it only recognizes the SD card in one of the slots, the other slot is bad and probably won't work with any card. If the card is recognized in the BROWSE FILES menu, but the data that is on the card is not working, there could be compatibility issues with the data and the GlobalMap 5000.

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If this doesn't help, please let me know some more details. Is the 2GB SD card recognized in the BROWSE FILES menu. What are you seeing that makes you determine it does not recognize this card? What files are currently on this card? What kind of card is it (brand, model).

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My plotter seems not to output NMEA to my DSC radio and auto helm

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I have a lowrance 3600c igps linked to a navman vhf 7100 but for some reason it has stoped giving information on my position to the radio. I have cheked all the wires are ok it was fine last week when i...

If your GPS was sending NMEA data and now is not, your NMEA configuration may have been inadvertently changed, either due to a user error, or possibly a software glitch.

You can configure the unit to use specific NMEA sentences.
1. Press MENU|MENU| then scroll down to SYSTEM SETUP and press |ENT.
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EXIT|EXIT|EXIT|EXIT to return to the previous page.

let me know if this worked for you, or if I may be of further assistance.

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