NMEA mutiplexer
Has anyone connected several NMEA devices together?
Here is what I am planning. GPS NMEA output to 1-PC-serial port for navigation software 2-radar to display next waypoint on radar multiple NMEA capable instruments to - PC for display within navigation software Any comments suggestions appreciated Gaby |
NMEA mutiplexer
"Gabriel Latrémouille" wrote in message
. cable.rogers.com... Has anyone connected several NMEA devices together? Here is what I am planning. GPS NMEA output to 1-PC-serial port for navigation software 2-radar to display next waypoint on radar multiple NMEA capable instruments to - PC for display within navigation software Any comments suggestions appreciated You can do that with our multiplexers. You can connect up to four instruments (outputs) to four inputs on the multiplexer. The RS-232 or USB output from the multiplexer feeds the combined NMEA data to your computer. At the same time, the combined NMEA data is available on two NMEA outputs on the multiplexer, one of which can be connected to your radar. Meindert www.shipmodul.com |
NMEA mutiplexer
hello
there a company called marine electronic supplies (MES) and i think there in southampton, but i moght be wrong. they do a box called an nema splitter, feed a gps in and you can get anywhere from 2 to lots and lots of outputs, think they start around £200, regards Meindert Sprang wrote: "Gabriel Latrémouille" wrote in message . cable.rogers.com... Has anyone connected several NMEA devices together? Here is what I am planning. GPS NMEA output to 1-PC-serial port for navigation software 2-radar to display next waypoint on radar multiple NMEA capable instruments to - PC for display within navigation software Any comments suggestions appreciated You can do that with our multiplexers. You can connect up to four instruments (outputs) to four inputs on the multiplexer. The RS-232 or USB output from the multiplexer feeds the combined NMEA data to your computer. At the same time, the combined NMEA data is available on two NMEA outputs on the multiplexer, one of which can be connected to your radar. Meindert www.shipmodul.com |
NMEA mutiplexer
"Birdog" wrote in message
... hello there a company called marine electronic supplies (MES) and i think there in southampton, but i moght be wrong. they do a box called an nema splitter, feed a gps in and you can get anywhere from 2 to lots and lots of outputs, think they start around £200, But you cannot use a splitter to combine the outputs of different instruments together to one. That can only be achived by a multiplexer. Meindert |
NMEA mutiplexer
We're using a 4-port Noland multiplexer made to go with The Cap'n nav
software aboard Lionheart. The four talkers in the network a Raymarine RL70CRC color radar/chartplotter with Seatalk Smart Heading Sensor (gyro-compass) and Raymarine's WAAS-GPS receiver built into the GPS antenna. The RL70CRC NMEA output has data from all of these inputs.....port 1 Port 1 has a toggle switch that switches port 1 to a Garmin 185 GPS/Sonar Chartplotter in case there's Raymarine problems. The Garmin's less accurate GPS receiver, uncompensated by WAAS or MF differential, provides backup navigation GPS data to The Cap'n and autopilot. Yeoman XL Sport (disassembled and affixed to the bottom of the chart table lift top) which outputs new waypoints to the system from paper charts it also keeps updated SO easily.......port 2 B&G "Network" instrument string: Network Wind, Network Speed, Network Depth, Network Data and the new Network Pilot autopilot with its own compass fluxgate (redundant)......port 3 (NMEA0183 comes out of pin 4 on any B&G Network instrument of all the data instuments.) Icom M602 DSC VHF radio.....outputs NMEA data to all instruments from any distress call or call to our MMSI on Ch 70 to pinpoint emergency or calling station's position on all chart plotters. These ports output data directly to the TX output fed to the computer's RS-232C serial port, when the computer is running. The Cap'n digests this information and outputs to the B&G Network Pilot when the master data output switch is in Computer position (another toggle switch). The switches other position takes data directly off the TX port on the multiplexer so the Raymarine or Garmin chart plotters can control the autopilot if the computer is not online with their own waypoint data steering the boat. If the multiplexer fails, a third toggle switch takes data directly off either the Garmin or Raymarine chartplotters and feeds it to the network master output, without the "fluff" instruments unnecessary for simple waypoint navigation if more stuff fails. No time to rewire at sea. Toggle switches are labeled and instantaneously able to bypass many dead or malfunctioning equipment in that squall line. My handheld GPS is always loaded, just in case the whole thing is toast! We've also got a sextant, if it comes to that......(c; On Tue, 21 Oct 2003 16:51:16 GMT, "Gabriel Latrémouille" wrote: Has anyone connected several NMEA devices together? Here is what I am planning. GPS NMEA output to 1-PC-serial port for navigation software 2-radar to display next waypoint on radar multiple NMEA capable instruments to - PC for display within navigation software Any comments suggestions appreciated Gaby Larry W4CSC 3600 planes with transponders are burning 8-10 million gallons of kerosene per hour over the USA. R-12 car air conditioners are responsible for the ozone hole, right? |
NMEA mutiplexer
YOn Tue, 21 Oct 2003 16:51:16 GMT, "Gabriel Latrémouille"
tempted fate with: Has anyone connected several NMEA devices together? Here is what I am planning. GPS NMEA output to 1-PC-serial port for navigation software 2-radar to display next waypoint on radar multiple NMEA capable instruments to - PC for display within navigation software Any comments suggestions appreciated Gaby Gabriel - You've lumped several questions together. Rather than try to tell you what to buy, let me suggest some things to think about first. 1. List all your equipment needs. For instance, you don't mention an autopilot, which would be a critical consideration. 2. List all your display needs, for instance, do you need instrument repeaters at the nav station? Is your GPS a chart plotter? How important is it to have access to charts on the computer? Do you have a flybridge? 3. If you have an autopilot, will it be driven by a chart program, by the GPS directly, or do you want to have a choice? For instance, after having used several PC charting packages, I would never willingly go back to entering waypoints on the GPS. Nevertheless, since PCs aren't that reliable compared to a good GPS, I feel it is critical to be able to fall back to GPS waypoints if the PC fails. Other people no doubt have other preferences. 4. Would you like to use the PC itself as a repeater display of NMEA data? Will there be other downstream NMEA data consumers? 5. Be sure you understand the nature of the instrument interfaces you are using. Are all the devices really using NMEA, or are there some instruments using SeaTalk in the mix? For instance, my Raymarine autopilot can run off NMEA or SeaTalk data, but the remote is a SeaTalk device. 6. Are all the NMEA instruments actually following the specification exactly? The spec is supposed to be built on RS-422, which has several benefits. Computer serial ports use RS-232, which is similar enough to RS-422 for the two to work together, usually. But it is a bad idea to do this, in my opinion. You really should use a convertor between the two types of circuits. RS-422 to RS-232 convertors aren't all that expensive when compared to a fried motherboard on your PC. The critical feature to look for is isolation, often referred to as opto-isolation or galvanic isolation. A simple convertor goes from one NMEEA circuit to one serial port. A multiplexor combines several NMEA circuits into one serial port. If you select a multiplexor, make sure it has the isolation feature. I believe that Meindert's have this. Their specifications generally seem superior to other units on the market, but I haven't actually used one. I went with a software solution instead. To make it more complex, not all NMEA instruments are actually using RS-422. For instance, my Garmin handheld actually uses RS-232 and has a typical serial port connector, so no convertor is necessary. My depth sounder and knotlog seem to be using some sort of hybrid. My autopilot is an honest to gosh RS-422 interface. When you look at the wiring instructions, if you see a +, a ground, and a signal wire, you aren't looking at RS-422. If you see a +, a ground, a signal +, and a signal -, you have an RS-422. Again, I would never hook an RS-422 and an RS-232 circuit together directly. Your mileage may vary. 7. To send the GPS signal both to the PC and and the radar, do you want to split the signal before the PC, or forward the data to the radar from the PC? Technically, you are supposed to be able to drive up to 4 NMEA "listeners" from a single NMEA "talker" but I have never actually done this. You can also buy an NMEA expander which is designed to drive multiple NMEA circuits, but I think this would be overkill. Some multiplexors have an NMEA talker port as well as a serial port, which should work well for you. Don't forget to feed the autopilot, though. Just for fun, this is how my NMEA network is rigged. My GPS (Garmin 48) is plugged directly into a serial port My DS/KM/Wind is wired to the input side of a B&B NMEA-Serial convertor. My autopilot is wired to the output side of the convertor. The convertor is attached to my laptop USP port via a serial-USB adapter. The data from the two serial ports is multiplexed and displayed by my software. (You could replace this with a hardware multiplexor attached to one of the ports). Itt displays the data on the PC screen in nice big numbers that I can see all the way out to the cockpit. It logs the data to disk. That's the normal setup. When I want to use the ECS (charting program) and the autopilot, the wiring stays the same, but the GPS is attached directly to the ECS. The ECS passes the GPS data and the autopilot strings it generates through a virtual serial port to my software, which multiplexes the data with the DS/KM/wind data and passes the autopilot commands out the USB port to the convertor and thence to the autopilot. If the PC was to die, I would unplug the GPS from the PC, and plug it to the convertor using the gender changer thoughtfully secured to the convertor. I tell you all this not as a recommendation for you to follow, but to illustrate the thought process behind the network configuration. I hope I haven't confused the situation unnecessarily. It's a beautiful thing once you get it all working. If you think it through beforehand, you can save yourself a lot of rewiring, not to mention you can buy the right equipment the first time. __________________________________________________ __________ Glen "Wiley" Wilson usenet1 SPAMNIX at worldwidewiley dot com To reply, lose the capitals and do the obvious. Take a look at cpRepeater, my NMEA data integrator, repeater, and logger at http://www.worldwidewiley.com/ |
NMEA mutiplexer
I have used the Noland and ultimately decided upon the
MiniPlex-41USB from www.shipmodul.com. Far superior to the Noland in my opinion. If you want a Noland multiplexer and expander, I'll make you a good deal on them :) They can somewhat handle your NMEA and also heat a compartment as well. Doug s/v Callista "Gabriel Latrémouille" wrote in message . cable.rogers.com... Has anyone connected several NMEA devices together? Here is what I am planning. GPS NMEA output to 1-PC-serial port for navigation software 2-radar to display next waypoint on radar multiple NMEA capable instruments to - PC for display within navigation software Any comments suggestions appreciated Gaby |
NMEA mutiplexer
"Glen Wiley Wilson" wrote in message
... snip If you select a multiplexor, make sure it has the isolation feature. I believe that Meindert's have this. That's right. And beware of the new 'improved' model of Noland: this one has NO galvanic isolation. To make it more complex, not all NMEA instruments are actually using RS-422. For instance, my Garmin handheld actually uses RS-232 and has a typical serial port connector, so no convertor is necessary. My depth sounder and knotlog seem to be using some sort of hybrid. My autopilot is an honest to gosh RS-422 interface. When you look at the wiring instructions, if you see a +, a ground, and a signal wire, you aren't looking at RS-422. If you see a +, a ground, a signal +, and a signal -, you have an RS-422. Again, I would never hook an RS-422 and an RS-232 circuit together directly. Your mileage may vary. In general: you can connect a RS-232 output to a NMEA RS-422 input by connecting teh TX or OUT from the RS-232 to the + or 'A' from an NMEA in, while connecting the - or B from NMEA in to the ground of teh RS-232 output. The other way around (RS-422 out to RS-232 in) will mosty not work. Meindert |
NMEA mutiplexer
Doug,
I just had a look at the ShipModul site and read the info concerning both the VirtualPlex-1 software and the MiniPlex-41USB. Both sounded VERY interesting. Could you tell me if purchasing the MiniPlex-41USB includes the VirtualPlex-1 S/W? Is the S/W usable without the hardware? Lots of people seem to be having trouble simply attaching a GPS receiver to their laptops because they have no serial ports anymore. It seems to me that the VirtualPlex-1 SW solves that problem as well. Any enlightenment will be appreciated. TIA Vic -- __________________________________________________ ______ Victor Fraenckel - The Windman vfraenc1 ATSIGN nycap DOT rr DOTcom KC2GUI Home of the WindReader Electronic Theodolite Read the WIND "Victory at all costs, victory in spite of all terror, victory however long and hard the road may be; for without victory there is no survival." - Winston [Leonard Spencer] Churchill (1874 - 1965) Dost thou not know, my son, with how little wisdom the world is governed? -Count Oxenstierna (ca 1620) to the young King Gustavus Adolphus |
NMEA mutiplexer
"Vic Fraenckel" wrote in message
... Doug, I just had a look at the ShipModul site and read the info concerning both the VirtualPlex-1 software and the MiniPlex-41USB. Both sounded VERY interesting. Could you tell me if purchasing the MiniPlex-41USB includes the VirtualPlex-1 S/W? Is the S/W usable without the hardware? Lots of people seem to be having trouble simply attaching a GPS receiver to their laptops because they have no serial ports anymore. It seems to me that the VirtualPlex-1 SW solves that problem as well. Any enlightenment will be appreciated. Hello Vic, I am the manufacturer of both poducts. The VirtualPlex-1 software is not included in the purchase of a MiniPlex-41USB. VirtualPlex-1 is usable without the hardware, it can be used with any source of NMEA data. But VirtualPlex-1 does not solve the problem you describe. The MiniPlex-41USB connects four NMEA sources to a computer that lacks a serial port. When you only have to connect a single GPS, it is a bit of overkill since a simple USB-serial converter could be used for this purpose. However, many of these converters do not work very well or create the famous wild-mousepointer problem. This does not occur when you use a MiniPlex-41USB, because the supplied driver blocks any Plug&Play requests coming from Windows. VirtualPlex-1 could be described as the software antipode of a multiplexer. It reads the data from one single serial port, beit a real one or a virtual one, and dispatches it to up to 255 virtual serial ports that are created by VirtualPlex-1. This enables multiple software applications to run at the same time and use the incoming NMEA data. Also, VirtualPlex-1 allows the applications to talk back to the 'real' serial port in order to send out NMEA data. Hope this clarifies things a bit. Meindert www.shipmodul.com |
NMEA mutiplexer
On Wed, 22 Oct 2003 00:47:45 GMT, "Glen Wiley Wilson"
wrote: 7. To send the GPS signal both to the PC and and the radar, do you want to split the signal before the PC, or forward the data to the radar from the PC? Technically, you are supposed to be able to drive up to 4 NMEA "listeners" from a single NMEA "talker" but I have never actually done this. You can also buy an NMEA expander which is designed to drive multiple NMEA circuits, but I think this would be overkill. Some multiplexors have an NMEA talker port as well as a serial port, which should work well for you. Don't forget to feed the autopilot, though. In the past, NMEA listeners had quite a relatively low input resistance that loaded the circuitry, rapidly, to peak current capacity. But, if you put your ohmmeter to the input of the new devices, you'll find they act almost like an open circuit. In our "No Computer" configuration on Lionheart, the RS-232 TX output from the Noland Multiplexer is applied to the master data output circuit that feeds all the listeners. Noland warned me it was only capable of 15ma of current, unlike the TLK NMEA outputs which will sink a lot more. They told me overloading or shorting wouldn't hurt the Noland multiplexer, it would simply not have sufficient output levels to key the listeners. The listeners connected to the master data output a Icom M602 VHF xcvr Icom M802 HF-SSB xcvr Raymarine RL70CRC radar/chartplotter Garmin 185 GPS/Sonar B&G Network Pilot autopilot B&G Yeoman paper chart drafting table and, at times, a Dell Latitude P4 notebook computer's serial port when someone forgets to flip the switch to COMPUTER ON. With all these loads, the 15ma output limit of the Noland multiplexer runs them all just fine with valid data. Nothing seems unstable..... Larry W4CSC 3600 planes with transponders are burning 8-10 million gallons of kerosene per hour over the USA. R-12 car air conditioners are responsible for the ozone hole, right? |
NMEA mutiplexer
On Tue, 21 Oct 2003 21:17:57 -0400, "Doug Dotson"
wrote: I have used the Noland and ultimately decided upon the MiniPlex-41USB from www.shipmodul.com. Far superior to the Noland in my opinion. If you want a Noland multiplexer and expander, I'll make you a good deal on them :) They can somewhat handle your NMEA and also heat a compartment as well. Doug s/v Callista Seeing it's a piece of crap, I'll big $20 and be nice...... Want my address? I'll take it......(c; Larry W4CSC 3600 planes with transponders are burning 8-10 million gallons of kerosene per hour over the USA. R-12 car air conditioners are responsible for the ozone hole, right? |
NMEA mutiplexer
On Wed, 22 Oct 2003 09:19:20 +0200, "Meindert Sprang"
tempted fate with: "Glen Wiley Wilson" wrote in message .. . Again, I would never hook an RS-422 and an RS-232 circuit together directly. Your mileage may vary. In general: you can connect a RS-232 output to a NMEA RS-422 input by connecting teh TX or OUT from the RS-232 to the + or 'A' from an NMEA in, while connecting the - or B from NMEA in to the ground of teh RS-232 output. The other way around (RS-422 out to RS-232 in) will mosty not work. Meindert Yes, I have seen or done both. I even understand why it works that way. I was merely stating a policy. When I spec something for navigating a boat it has to be bulletproof, not a marginal "generally works" type of thing. Also, I don't like connecting anything to a ground except another ground. Seems to me to be asking for several different kinds of trouble. I am not any kind of an engineer, whereas I believe you are, but that is my policy. As I said, other peoples's mileage may vary, but I suspect we are more or less in agreement, or your products would not be what they are. On a different subject, do you know what's going on with NMEA2000? Did it wind up being CAN, and is anyone supporting it yet? It looks like a sweet deal for the instrument makers. RS-232/CAN convertors are 3 times the price of RS-422/RS-232 and it looks as if they could potentially lock out anyone who doesn't pony up the fee to get an ID assigned. But maybe I'm just paranoid... __________________________________________________ __________ Glen "Wiley" Wilson usenet1 SPAMNIX at worldwidewiley dot com To reply, lose the capitals and do the obvious. Take a look at cpRepeater, my NMEA data integrator, repeater, and logger at http://www.worldwidewiley.com/ |
NMEA mutiplexer
On Wed, 22 Oct 2003 14:02:52 GMT, "Glen Wiley Wilson"
tempted fate with: On Wed, 22 Oct 2003 09:19:20 +0200, "Meindert Sprang" tempted fate with: "Glen Wiley Wilson" wrote in message . .. Again, I would never hook an RS-422 and an RS-232 circuit together directly. Your mileage may vary. In general: you can connect a RS-232 output to a NMEA RS-422 input by connecting teh TX or OUT from the RS-232 to the + or 'A' from an NMEA in, while connecting the - or B from NMEA in to the ground of teh RS-232 output. The other way around (RS-422 out to RS-232 in) will mosty not work. Meindert Yes, I have seen or done both. I even understand why it works that way. I was merely stating a policy. When I spec something for navigating a boat it has to be bulletproof, not a marginal "generally works" type of thing. I forgot to mention that NMEA listeners are supposed to be isolated, so it should be perfectly fine to attach an RS-232 talker to an NMEA listener. I'm just not sure everyone implemented that particular feature, given the workmanship I've seen in the instruments I've cracked open. So, for the record, when speaking for public consumption, I prefer to play it safe. But, as I said before, I'm not an expert and I'm willing to be educated if I'm wrong. __________________________________________________ __________ Glen "Wiley" Wilson usenet1 SPAMNIX at worldwidewiley dot com To reply, lose the capitals and do the obvious. Take a look at cpRepeater, my NMEA data integrator, repeater, and logger at http://www.worldwidewiley.com/ |
NMEA mutiplexer
On Wed, 22 Oct 2003 14:26:43 GMT, "Glen Wiley Wilson"
wrote: Interesting. I'd have bet money that would be a flakey setup. You learn something every day (well you do if you're paying attention.) If I felt sure that my customers had someone of your expertise aboard, I might even be comfortable recommending something like that. :-) What ****es me off is the manufacturers rarely use a BALANCED feed, i.e. NMEA + and NMEA - like it calls for. Much cheaper to unbalance it. The stupid Icom M802 HF-SSB NMEA data input is a GROUNDED BNC RF connector! That's crazy! Nothing like feeding SSB RF straight from the radio's cabinet into NMEA - to cause havoc. Of course, if you hook the coax shield of their connector to SCREEN, instead of NMEA -, there's no data input to the Icom.....dammit. Idiots. Garmin has + wire and ground B&G Network output + wire and ground Yeoman in and out + wire and ground Icom M602 VHF in and out + wire and ground Plenty of room for lots of RF intrusion into the NMEA system and it all radiates like hell into the HF and VHF from all the stupid unshielded screw terminals, push terminals, plain wires, unshielded SeaTalk connectors/wires, it all drives the HF-SSB bands crazy jamming the receiver with its stupid data noises. The boxes aren't shielded, either. Garmin's plastic case, Raymarines are all in plastic cases, B&G's are all in plastic, except for the main computer on the Network Pilot. The data computer inside the display of Pilot is all plastic you can see through...unshielded, of course. Noone seems to care if the data instruments radiate into the radios or are scrambled by the radios as long as profits are maximized. No organization forces them to conform to any computer ratings like your home computer. It's all nuts.......damned NMEA is gutless to change it. Larry W4CSC 3600 planes with transponders are burning 8-10 million gallons of kerosene per hour over the USA. R-12 car air conditioners are responsible for the ozone hole, right? |
NMEA mutiplexer
"Glen Wiley Wilson" wrote in message
... On a different subject, do you know what's going on with NMEA2000? Did it wind up being CAN, and is anyone supporting it yet? It looks like a sweet deal for the instrument makers. RS-232/CAN convertors are 3 times the price of RS-422/RS-232 and it looks as if they could potentially lock out anyone who doesn't pony up the fee to get an ID assigned. But maybe I'm just paranoid... Well, it's pretty expensive to get NMEA2000 running for the first product. All standards, testsuites and manufacter- and product ID for the first product sets you back for $10,500. So I'll stick to NMEA 0183 for a while :-) As far as I see it, only the big guys go for NMEA2000. Meindert |
NMEA mutiplexer
"Glen Wiley Wilson" wrote in message
... I forgot to mention that NMEA listeners are supposed to be isolated, so it should be perfectly fine to attach an RS-232 talker to an NMEA listener. That is correct. I'm just not sure everyone implemented that particular feature, given the workmanship I've seen in the instruments I've cracked open. So, for the record, when speaking for public consumption, I prefer to play it safe. And that is correct too. Many mfg's have just a single ended input aka 'in' vs. 'gnd'. Even many with a + and - (differential) you cannot be sure if they have isolation. Pity that the NMEA organisation does not 'approve' designs. But rest asu my muxes all have optocouplers inside :-) Meindert |
NMEA mutiplexer
There was a write up in this month's Ocean Navigator. Thus far only 5
products have been fully certified but another 40 are in the process. Teleflex has a full line of CANbus engine controls. One thing for sure, it will be more expensive. The prices for just the cable connectors is outrageous and no doubt we will end up eating our share of the certification costs. NMEA charges an arm and a leg for almost everything they do like that. Meindert Sprang wrote: "Glen Wiley Wilson" wrote in message ... On a different subject, do you know what's going on with NMEA2000? Did it wind up being CAN, and is anyone supporting it yet? It looks like a sweet deal for the instrument makers. RS-232/CAN convertors are 3 times the price of RS-422/RS-232 and it looks as if they could potentially lock out anyone who doesn't pony up the fee to get an ID assigned. But maybe I'm just paranoid... Well, it's pretty expensive to get NMEA2000 running for the first product. All standards, testsuites and manufacter- and product ID for the first product sets you back for $10,500. So I'll stick to NMEA 0183 for a while :-) As far as I see it, only the big guys go for NMEA2000. Meindert -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com |
NMEA mutiplexer
Did they change the spec? I got ahold of one of the later prelim specs
and just like 0183, they specified no connectors and were pretty solid on the fact that the flexability of not specifying them was a good thing. Doug "Glenn Ashmore" wrote in message news:TDylb.86906$sp2.60656@lakeread04... There was a write up in this month's Ocean Navigator. Thus far only 5 products have been fully certified but another 40 are in the process. Teleflex has a full line of CANbus engine controls. One thing for sure, it will be more expensive. The prices for just the cable connectors is outrageous and no doubt we will end up eating our share of the certification costs. NMEA charges an arm and a leg for almost everything they do like that. Meindert Sprang wrote: "Glen Wiley Wilson" wrote in message ... On a different subject, do you know what's going on with NMEA2000? Did it wind up being CAN, and is anyone supporting it yet? It looks like a sweet deal for the instrument makers. RS-232/CAN convertors are 3 times the price of RS-422/RS-232 and it looks as if they could potentially lock out anyone who doesn't pony up the fee to get an ID assigned. But maybe I'm just paranoid... Well, it's pretty expensive to get NMEA2000 running for the first product. All standards, testsuites and manufacter- and product ID for the first product sets you back for $10,500. So I'll stick to NMEA 0183 for a while :-) As far as I see it, only the big guys go for NMEA2000. Meindert -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com |
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