Oh I know that's how you could do it. In fact I've been collecting NMEA
parsing info for a while for just such a project. I know very litle about
packet radio so I figured I'd use a low bandwidth non-negotiating modem (300
bis or something like that) to send info over low powered non-regulated FM
radios. A simple receiver with a decent antenna should give enough range for
my applications.
The avionics board I'm designing uses an AVR mega128 which has 2 built in
UARTs. One to talk to the GPS, the other to the modem.
I would probably use an Etrex as it's only about $90 and has some uses
beyond rocketry as well.
Finally there's the Rino which puts GPS into a GMRS radio. $300 total for
both rocket and ground station would set you up.
RDAS has a GPS option but I haven't looked at it.
Sander
----- Original Message -----
From: "Bill Clawson" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, June 07, 2002 5:31 PM
Subject: RE: [ERPS] Fwd: [WAMEX] An interesting device
> This is not a perfect solution, but it wouldn't be all that bad: I have a
> GPS unit that set me back about $70. It is sold by Rand McNally, but made
> by a company in New Zealand. The unit is made to attach to a PC, such as
a
> laptop. It looks alot like a mouse, but attaches to the PC's serial port.
> Inside there is one board and a patch antenna. The whole assembly weighs
a
> few ounces. Every second, it spits out the typical GPS NMEA strings
> (position, of course, is part of that serial dump).
>
> I could program a PIC processor to strip out the position strings from the
> GPS and integrate a call sign into the message packet and spit it out to a
> transmitter. I think this would be a fairly trivial process.
>
> By the way, doesn't G-Wiz or some other rocket supply place sell GPS's on
a
> chip?
>
> Bill
>
>
> -----Original Message-----
> From: Sander Pool [mailto:[EMAIL PROTECTED]]
> Sent: Friday, June 07, 2002 5:19 PM
> To: [EMAIL PROTECTED]
> Subject: Re: [ERPS] Fwd: [WAMEX] An interesting device
>
>
> Don't all cell phone 'standards' (yeah, that's a joke :-) need to support
> GPS location reporting within the next few years? Of course if there is no
> cell-coverage at all this doesn't work. Even Nextel uses a cell tower to
> connect phones 'directly', right?
>
> It would probably be tricky to buy less than 10.000 units of these
chipsets
> but maybe a sample or two could be had.
>
> Sander
>
> ----- Original Message -----
> From: "Pierce Nichols" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Friday, June 07, 2002 5:12 PM
> Subject: [ERPS] Fwd: [WAMEX] An interesting device
>
>
> >
> > Anyone know if there is GSM service out at MTA?
> >
> > -p
> >
> > >X-Originating-IP: [194.237.142.5]
> > >From: "Carsten Glans" <[EMAIL PROTECTED]>
> > >To: "WAMEX" <[EMAIL PROTECTED]>
> > >Subject: [WAMEX] An interesting device
> > >Date: Sat, 8 Jun 2002 00:04:33 +0100
> > >X-Mailer: Microsoft Outlook Express 6.00.2600.0000
> > >X-OriginalArrivalTime: 07 Jun 2002 22:10:13.0957 (UTC)
> > >FILETIME=[19129750:01C20E70]
> > >
> > >Hi list!
> > >
> > >I have no connection to this company whatsoever, but have found what i
> > >belive is a great gadget for rocketry application. What they have
> > >developed is a transponder small as a box of matches containing a GSM
> > >phone with a GPS device built in. You can phone it up and ask where it
is
> > >(its using both GPS and GSM triangulation) and also have the device
phone
> > >you up and say where it is. It is also capable of being programed and
> > >controlled from a phone (manual recovery activation!?). The obvius
usage
> > >is of course for rocket recovery. They also are up to making a small
> > >device you put on your dog when you are out hunting and you can follow
> the
> > >dog from the phone using for example a WAP phone. Its also possible to
> > >trace through maps on Internet and on map programs. I will investigate
> > >further, they are to release their products during the automn. The
> address
> > >is <http://www.followit.se/>http://www.followit.se/
> > >
> > >Respectfully
> > >
> > >
> > >Carsten Glans
> > ><http://www.min-sajt.com/cag>http://www.min-sajt.com/cag
> > >
> >
> > Mars or Bust!
> > www.marssociety.com
> >
> > _______________________________________________
> > ERPS-list mailing list
> > [EMAIL PROTECTED]
> > http://lists.erps.org/mailman/listinfo/erps-list
> >
> >
>
> _______________________________________________
> ERPS-list mailing list
> [EMAIL PROTECTED]
> http://lists.erps.org/mailman/listinfo/erps-list
> _______________________________________________
> ERPS-list mailing list
> [EMAIL PROTECTED]
> http://lists.erps.org/mailman/listinfo/erps-list
>
>
_______________________________________________
ERPS-list mailing list
[EMAIL PROTECTED]
http://lists.erps.org/mailman/listinfo/erps-list
