Thread Tools Search this Thread
Old 27 June 2008, 15:46   #1
Country: UK - England
Town: tiverton
Boat name: caprera
Make: alo
Length: 8m +
Engine: inboard diesel
Join Date: Jun 2008
Posts: 1
usb gps to vhf

hi folks, just got a navman 7100 vhf. my gps is a usb mouse type connected to my laptop which is running maptech chart navigator, and hopefully shortly, my raymarine auto pilot , would it be possible to put a usb lead on the vhf to transmit my position. HELP , buggsy

buggsy is offline   Reply With Quote
Old 27 June 2008, 15:59   #2
RIBnet admin team
Poly's Avatar
Country: UK - Scotland
Boat name: imposter
Make: FunYak
Length: 3m +
Engine: 2 stroke YAM 20 HP
MMSI: 235089819
Join Date: Sep 2005
Posts: 9,412
just to be clear you want to connect:

USB GPS mouse --> Laptop --> Ramarine autopilot
. . . . . . . . . . . . . . . . |
. . . . . . . . . . . . . . . . +-----> Navman VHF

If the laptop has a spare RS232 (serial) port on it, then it may be possible to feed the USB position out on RS232 (using NMEA standard) and into the Navman. If there is no serial port then you would need a USB-serial convertor and again in theory it would be possible, BUT (and its a big but) theoretically possible and simple are not necessarily the same thing.

I suspect that unless you are proficient with computer interfaces (USB, RS232 etc) then you would be much simpler and potentially just as cheap to buy a cheap GPS with serial/NMEA out, and connect this to the navman.
Poly is offline   Reply With Quote
Old 28 June 2008, 04:24   #3
Country: UK - England
Town: Exmouth, Devon
Length: no boat
Join Date: Oct 2004
Posts: 765
Originally Posted by Polwart View Post
Would be much simpler and potentially just as cheap to buy a cheap GPS with serial/NMEA out, and connect this to the navman.
You would also not be depending on the laptop functioning to provide position to the VHF.

BTW, how are you connecting the Autopilot to the laptop?
Tel 01395 227727
MikeCC is offline   Reply With Quote
Old 28 June 2008, 07:48   #4
Country: UK - Wales
Town: swansea
Boat name: Too Blue
Length: 8m +
Engine: Suzuki DT225
Join Date: Mar 2004
Posts: 12,791
USB has a nasty habit of losing connection sometimes - just what you don't want!!!

If your laptop is a half tidy one you should have a pcmcia or pc card slot. You can buy these with RS232/serial connectors.

You can also buy a usb/serial lead which would plug into the laptop and then you could connect the VHF to it BUT how good it would be I haven't a clue - it's one of those try it and see situations.

I would be tempted to buy a cheap Garmin hand held - it's always handy to have a backup GPS anyway!!!
codprawn is offline   Reply With Quote
Old 29 June 2008, 16:51   #5
Country: UK - England
Boat name: Angel-B
Make: Ex Y boat
Length: 3m +
Engine: Suzuki 9.9HP
Join Date: Apr 2007
Posts: 578
The laptop will need some form of software on it that will take in the position data from the USB GPS and push it out on an RS232 port - you can't convert from USB data to RS232 serial data without some form of intelligence between the two - RS232 to USB is easy by comparison.

There may be software out there to do it, but as others have already said it is not the easiest / most reliable approach, considering that the position into the VHF radio is a safety benefit, and autopilots are definitely best kept as far away from Bill G's empire as possible.

You also need to check that the Navman 7100 accepts RS232 data - many VHF are looking for RS422 or RS485 data (a different hardware format for serial data transmission.


chris123 is offline   Reply With Quote

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

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 19:38.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.