On Sun, 21 Sep 2014 12:57:27 -0400, "Flying Pig"
wrote:

Wayne, I've lost your email or I'd not clutter the thread here - but I cc'd
one which may well be out of date...

I'm in the process of trying to isolate why my chartplotter doesn't have a
GPS fix unless my computer's connected to the serial port my electronic
charts use.

===

Skip, sorry for the delay but just got home and have not been checking
USENET all that faithfully while we were underway south.

Are you saying that your chart plotter is not coming up with a GPS
position unless your computer is attached? Does it have its own GPS
antenna? Is it configured properly to use the antenna? I'd start by
totally disconnecting the computer interface and then work with
customer support as though it was a stand alone unit. It could be an
antenna problem, a cabling/connector problem or possibly a
configuration issue.

You WROTE

It turns out that I've been able to send a lot of my NMEA data over
WiFi without purchasing any hardware at all (assuming you've got an
extra lap top laying around). The trick is something called OpenCPN
software which is nominally a charting program but in reality has
become much more. OpenCPN has the ability to establish network
connections, both inbound and outbound. By using an old laptop to
take in all of my NMEA data on serial ports (GPS data from the chart
plotter and AIS data from the VHF radio), I can then send the data
back out over the WiFi network by doing a UDP broadcast to TCP/IP
address 192.168.0.255:1. Any other computer on the boat can receive
that datastream on the same IP address and port number so I can have
multiple computers at different locations displaying and processing
navigation data.


This is very interresting !
I can not succed to do that. When the PC is connected with cable it works but not when is only connected with WIFI to a local network
Can you tell us more about the configuration of the clients and the configurations of the server both on opencpn parameters and wiindows parameters
Thanks for help
Gilles