Very interesting!  I had connected my Garmin plotter to the Raymarine
autopilot and instruments successfully (btw, dtw, xte, cog, sog), but
failed to get anything back from the instruments (on a separate circuit) to
the plotter (depth etc).  I will try again!

Tim
Mojito
C&C 35-3
Branford, CT

On Mon, Sep 24, 2012 at 11:47 AM, Bill Coleman <colt...@verizon.net> wrote:

>  Well, Steve Thomas wins the Golden Thunder Mug.****
>
> ** **
>
> Electric I understand, Electronic is beyond my scope of comprehension.
> How (see below) you can ignore a NMEA ground on the VHF end and take the
> NMEA  IN ground, put a resistor on it, put it on the (NMEA IN) positive,
> (which to me = a direct short!) and Viola, the satellite icon pops up in
> the corner of the VHF, GPS Coordinates, time, the whole ball of wax!  NMEA
> 1.5 is now 2.0!  ****
>
> ** **
>
> <<< 1. Connect NMEA+ from the plotter to NMEA in (blue cable) on the VHF.
> 2. Connect NMEA- from the plotter to the NMEA in on the VFH via an 8k Ohm
> resistor ($1 part at the closest Electronic part store / Radio shack etc).
> 3. Isolate the NMEA ground (green cable) from the VHF and leave it
> disconnected.
> 4. On the "NMEA out" menu option in the RL70, select RMC (you can
> de-select the other options if you don't have another NMEA consumer.
>
> That's it. Your GX2100 will now be able to read the 
> GPS<http://www.sailnet.com/forums/autolink.php?id=1&script=showthread&forumid=104>
>  location from your plotter!>>>>****
>
> ** **
>
> Once again, as everyone says, this list is the best.  If no one has the
> answer, by gawry someone will go find it!****
>
> ** **
>
> Thanks again to Steve, and of course everyone else who chimed it with
> their suggestions.****
>
> ** **
>
> Bill Coleman****
>
> C&C 39 [image: animated_favicon1]****
>
> ** **
>
> *From:* Bill Coleman [mailto:colt...@verizon.net]
> *Sent:* Friday, September 21, 2012 2:07 PM
> *To:* 'cnc-list@cnc-list.com'
> *Subject:* RE: Stus-List NMEA 0183 Ver.1.5 to 3.0****
>
>  ** **
>
> This looks like good stuff.  I will be stopping off at Radio Shack this
> evening.  I had searched through there, but I never found that particular
> post, good find.  Whoops, no, I searched cruisers forums, not sailnet.****
>
> The NMEA voltage bounces as high, I think, (bad memory) 6 or 7 V, and
> everyone I talked to said highs of 4 or 5, so, maybe cutting it will help.
> ****
>
> And Fred, I did try connecting with either the shield or the ground, but I
> will screw around with this some more before trying the resistor.  You know
> what they say about the definition of insanity. . . ****
>
> Then when nothing works I will give up and buy another GPS antenna!****
>
> ** **
>
> Bill Coleman****
>
> C&C 39 [image: animated_favicon1]****
>
> ** **
>
> *From:* cnc-list-boun...@cnc-list.com [mailto:
> cnc-list-boun...@cnc-list.com] *On Behalf Of *Steve Thomas
> *Sent:* Friday, September 21, 2012 12:29 PM
>
> *To:* cnc-list@cnc-list.com
> *Subject:* Re: Stus-List NMEA 0183 Ver.1.5 to 3.0****
>
>  ** **
>
> Seems there is an electrical difference between 0183 1.xx and 0183 2.xx
> and later versions. ****
>
> The 1.xx versions are single ended, signal and ground, while the 2.xx and
> later have differential + and - signal wires and should have a separate
> ground/shield.****
>
>  ****
>
> Funny thing is that the GX2150 does not have differential inputs. ****
>
>  ****
>
> Anyway here is what one guy did to interface an RL series plotter to a
> GX2100.****
>
>  ****
>
> Might be worth a try.****
>
>  ****
>
>
> http://www.sailnet.com/forums/electronics/82335-how-connect-standard-horizon-gx2100-ais-vhf-raymarine-rl-70c-plotter.html
> ****
>
>  ****
>
> Steve Thomas****
>
> C&C27 MKIII****
>
> Port Stanley, ON****
>
>  ****
>
>  ****
>
>  ****
>
>  -----Original Message-----
> *From:* cnc-list-boun...@cnc-list.com [mailto:
> cnc-list-boun...@cnc-list.com]*On Behalf Of *Frederick G Street
> *Sent:* Friday, September 21, 2012 11:50 AM
> *To:* cnc-list@cnc-list.com
> *Subject:* Re: Stus-List NMEA 0183 Ver.1.5 to 3.0****
>
> Bill take a look at this PDF, starting with page 9: ****
>
> ** **
>
>
> http://www.actisense.com/Downloads/TechTalk/NMEA%200183/The%20NMEA%200183%20Information%20Sheet.pdf
> ****
>
> ** **
>
> This might help.  In my experience, sometimes there are issues with what
> gets labeled "input" vs. "output", as well as data + and – or ground; but
> be *really* careful what you try so you don't damage things.  Usually
> it's just as easy as connecting the properly labeled leads together to get
> the signal to the proper place -- the problem comes in getting the settings
> right on the send and receive end, so that everything's happy.****
>
>
> Fred Street -- Minneapolis
> S/V *Oceanis* (1979 C&C Landfall 38) -- on the hard in Bayfield, WI   :^(*
> ***
>
> ** **
>
> On Sep 21, 2012, at 10:25 AM, Bill Coleman wrote:****
>
> ** **
>
> Hello Steve,****
>
> This tech was pretty sharp, he was not reading from the manual – it is a
> 2003, so I believe him when he says it is 1.5****
>
> There also is no mention at all of versions, let alone Baud rates, , he
> said it was 4800, period. The only thing I can adjust in the setup is
> turning sentences on and off, and the seatalk bridge.****
>
> I have tried connecting them, no response.  The sentences are coming in,
> the voltage rolls up and down.  I think there must be something different
> in the protocol between 1.5 and 2.  The Standard Horizon manual definitely
> says it will only work  with ver. 2.0 and up. I have bridged NMEA to
> Seatalk as that is how the Autopilot communicates, but I don’t think this
> would be a problem, that just introduces other info such as the compass and
> converts to NMEA, I think.****
>
> A talk with a Standard Horizon Tech produced nothing, oddly enough he
> didn’t seem to know much about NEMA conversions.****
>
> Waiting to hear back from Brookhouse.****
>
> ** **
>
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