Question about Linksys Wireless-G WRT54GS Router (e125894)

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Changing com port numbers??

Hi guys. have program cmap, living aboard boat. Purchased gps reciever and can get it running in com port 9 and 10,, tried to configure cmap to run with the gps but it wont recognise the ports the gps is running out of. is there any way to change com port numbers so they can run together.. signed very frustrated

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Some (older or less sophisticated) software expects a com port with a number no higher than 4.

If this is the case, try changing the GPS emulated / virtual com port in "windows | control panel | system | ports" to something less than 5.

Posted on Sep 16, 2008


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Will not recieve sattilite signal

Hi dcross93,

Correcting GPS Satellite Reception Problems for some Receivers

There is a way to "persuade" many GPS units to use a specified communications port and baud rate for receiving the satellite signals. You need to have a little programming knowledge to do this. This may not be the problem with your unit, but it works on some receivers.

I cannot tell you all the exact procedures for doing so for each individual GPS receiver, but you may be able to do it yourself if you are bold enough, or have a friend who is experienced in basic programming. Make sure you backup and rename any files being modified, as improper code might put your unit to sleep...maybe forever.

All GPS receivers have a "setup" or "configuration" or "sys" file in the unit's main memory software that tells it how to startup and load all the various configurations...just like a Windows PC.

In one of the files will probably be a few lines of code as follows:


Your unit may have something similar to the above code. Find out what your communications Port is, and the Baud rate the modem is running, and that should force the GPS to run on those defaults. Some units will run ok on "auto" setting for the port. If you're game, it's worth a try.

One other little tidbit of programming info:

Something that has always annoyed me is the really slow simulation speed when you're trying to run through your route. Some units will allow a faster than 1X (real time) speed drive-through. Real time is sooooo slow. Look at this code:


Now look at this:


Which one would you rather put up with? The above information may not be feasible for everyone, but it's worth attempting if you want to try. Just be aware that it may VOID your warranty, if you're within that period.

These are just some suggestions to try. Maybe you can use them. If you do try, let me know how it works ou. Thanks.

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If not in there, try to do this manually by accessing your router's web configurator, (ex. in internet explorer address bar). Go to portforwarding menu...just add an HTTP with named Texas Poker, also enter port number 9339 for it's port assignment.


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