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[aprssig] Win APRS Mobile

scott at opentrac.org scott at opentrac.org
Thu Jun 2 01:57:30 UTC 2005


It'd certainly be able to help with the packet size problems.  I have no
immediate plans for mailbox support, but there's no reason it couldn't do
that.  For an embedded version you wouldn't want the SD/MMC socket, but
there might be a solderable alternative.  I can't find it now, but I think
Hitachi made a flash chip that had the same interface as the MMC.  I'll be
looking for something like that if I ever build a version of the board for
Cubesat use.  I suppose for use in a mobile rig you could live with
installing the card in a socket and securing it with a bit of glue so it
didn't vibrate loose.

So how does the radio talk to the TNC internally?  In the DR-135 I don't
think that's an issue, because the radio doesn't do anything with the TNC
itself.

Scott
N1VG 

> -----Original Message-----
> From: aprssig-bounces at lists.tapr.org 
> [mailto:aprssig-bounces at lists.tapr.org] On Behalf Of Ian
> Sent: Wednesday, June 01, 2005 6:47 PM
> To: 'TAPR APRS Mailing List'
> Subject: RE: [aprssig] Win APRS Mobile
> 
> Couple of concerns listed at http://www.elcom.gr/sv2agw/hardware.htm 
> 
> 73, Ian N8IK
> 
> 
> -----Original Message-----
> From: aprssig-bounces at lists.tapr.org 
> [mailto:aprssig-bounces at lists.tapr.org]
> On Behalf Of scott at opentrac.org
> Sent: Wednesday, June 01, 2005 9:25 PM
> To: 'TAPR APRS Mailing List'; rgilson at adelphia.net
> Subject: RE: [aprssig] Win APRS Mobile
> 
> Is the TNC board in the D700 the same as that in the DR-135?  
> Does anyone know how the APRS functions integrate with the TNC?
> 
> I'm considering the possibility of building a version of my 
> ARM-based TNC that'd work as a drop-in replacement for at 
> least the TNC in the DR-135.  If the D700 is similar, I 
> imagine it ought to be able to build an interface layer that 
> would correct some of the APRS behavior of the radio.  It 
> could be made to translate new message formats into those 
> understood by the D700, for example.
> 
> Just a thought...
> 
> Scott
> N1VG 
> 
> > -----Original Message-----
> > From: aprssig-bounces at lists.tapr.org
> > [mailto:aprssig-bounces at lists.tapr.org] On Behalf Of Randy Allen
> > Sent: Wednesday, June 01, 2005 5:51 PM
> > To: TAPR APRS Mailing List; rgilson at adelphia.net
> > Subject: Re: [aprssig] Win APRS Mobile
> > 
> > I'm not familiar with the particulars on WINAPRS or that GPS, but 
> > using a D700:
> > 
> > The GPS (I use Garmins, GPS II+ and Streetpilot) stays 
> plugged in to 
> > the D700.  Hook the Laptop up to the serial port on the 
> front of the 
> > radio body. Use a straight through cable, NOT a null modem.
> > 
> > Sent the radio's TNC to "PKT"  This bypasses the internal APRS 
> > firmware and turns control of the internal TNC to the software.
> > 
> > Ensure the sofware uses a TNC initalization file for the Kenwood 
> > radios.
> > 
> > The GPS feeds data to the radio which is passed through the serial 
> > port to the APRS software.
> > 
> > I've been very successful in this using APRS DOS and APRS+SA.
> > 
> > Good luck and 73
> > 
> > Ron wrote:
> 
> 
> 
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