[Xastir] Help with TH-D72 run in PACKET and get at GPS?

[Kurt Savegnago]

(Sorry about the hijack but it clarifies my reply and questions below)

As I understand it, The D72 can be used as a stand alone tracker with the TNC selected in the APRS mode or one can have the TNC in PACKET mode and control the TNC from a program like UI-View, Xastir or APRSIS32 with WINE.

When in PACKET mode, I don't think there is a way to extract the GPS information into the computer.  I said, "I don't think." :-) 
I could be wrong. ;-)  If I am, show me the way............
 
If there is a way to route the GPS info from the D72 while it is in PACKET mode to the laptop via a USB sertial comverter, I'd like to know as it would negate the need for a USB GPS receiver.  I used a USB receiver I plugged into my Linux/Xastir laptop to give it position information and the D7A(g) for receive/transmit purposes while the A(g) was in PACKET mode.

Is the GPS information available at the 2.5mm jack while the D72 is in PACKET mode?  If so, then a 2.5mm plugged cable to a DB9, going through 
a USB serial converter should give the GPS position info to the laptop.
If this is possible, would eliminate the need for a USB GPS receiver to be plugged into the laptop but.......... The battery consumption would go up in the D72 with it's GPS on.  In the field, I have a reservoir of electrons in the form of a high capacity 12V battery with an AC inverter for the laptop.  The USB GPS pulls it's juice from the laptop and the 
"reservoir". :-)

Still, it would be a nice option to do if the need arises.
How about it Don (W6GPS) is it possible? :-)

That's why I was tooting my horn so loudly about this rig.  It's options
I tell ya', options. Options the other guys don't have.  Incidentally I've seen quite a price drop in the "other guys" rigs.  I remember one of them,
(GR) had the gumption to have a list price of $540.00 in the beginning. Street is a lot lower but still, that was aggressive if you ask me. 


                                Kurt KC9LDH 

--- On Mon, 1/17/11, Tom Russo <russo at bogodyn.org> wrote:

> From: Tom Russo <russo at bogodyn.org>
> Subject: Re: [Xastir] Help with TH-D72
> To: "Xastir - APRS client software discussion" <xastir at lists.xastir.org>
> Date: Monday, January 17, 2011, 12:08 PM
> On Mon, Jan 17, 2011 at 01:04:28PM
> -0500, we recorded a bogon-computron collision of the <hbloomb at gmail.com>
> flavor, containing:
> > On Mon, Jan 17, 2011 at 12:19 PM, Curt, WE7U <curt.we7u at gmail.com>
> wrote:
> > 
> > > On Sun, 16 Jan 2011, Harry Bloomberg wrote:
> > >
> > >  I've got a new Kenwood TH-D72 that I've
> interfaced to Xastir.  It's
> > >> working
> > >> except for one problem.  Xastir is
> unable to obtain GPS data from the
> > >> TH-D72.  Whenever I do View->GPS, I
> see an error message: GPS data is
> > >> older
> > >> than 30 seconds.
> > >>
> > >
> > > Which Xastir interface type are you using? 
> It should be "Serial TNC w/GPS
> > > on Aux Port".  This is the mode where Xastir
> will send a Control-E
> > > periodically when it wants a GPS string from the
> Radio's TNC.  Also called
> > > Control-E mode or Paccomm mode.
> > >
> > >
> > I am able to connect to the TH-D72 using minicom and a
> USB cable.  Would it
> > be of any value for me to manually query the TH-D72's
> TNC for GPS data?  I
> > took a look at the Kenwood instruction set for the TNC
> and it was not
> > obvious to me what the TNC commands would be to obtain
> GPS data to see why
> > Xastir might think it is stale or unavailable, so I
> will need some help with
> > the exact TNC instructions.
> 
> Just a guess:
> The tnc-startup.thd7 file has commands commented out at the
> end that enable
> GPS data to be sent to Xastir.  Are you using this
> startup script?  Did you
> uncomment those lines?
> 
> -- 
> Tom Russo   
> KM5VY   SAR502   DM64ux 
>         http://www.swcp.com/~russo/
> Tijeras, NM  QRPL#1592 K2#398  SOC#236 
>       http://kevan.org/brain.cgi?DDTNM
>  "The truth will set you free, but first it will piss you
> off."
> 
> 
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