[aprssig] GPS attachment for Kenwood TH-D7?

['Scott Miller']

The new SiRF III-based units from Deluo are smaller than the GPS 18, and
probably more sensitive, though I haven't done any testing yet myself.
They're a little cheaper, too.

I talked to Deluo's CEO last week about APRS-related stuff, and explained
that I carry the GPS 18 because it operates at very high altitudes (which
none of the Deluos will) and it also has a 1pps timing output.  They've
already got a timing receiver, but he was going to look into the feasibility
of getting another device or an alternate firmware that'd be able to handle
high altitudes.  If those SiRF units would work for balloons, that'd be
great.

I think someone here or on one of the balloon lists mentioned a GPS vendor
that'd provide an alternate firmware for their engines that'd allow
operation at high altitudes.  Does anyone here know about that?  I'd like to
be able to point Deluo in the right direction.

Scott
N1VG 

> -----Original Message-----
> From: aprssig-bounces at lists.tapr.org 
> [mailto:aprssig-bounces at lists.tapr.org] On Behalf Of Stephen H. Smith
> Sent: Saturday, May 26, 2007 10:08 AM
> To: derek at dkoonce.com; TAPR APRS Mailing List
> Subject: Re: [aprssig] GPS attachment for Kenwood TH-D7?
> 
> Derek Koonce wrote:
> > Magellan had a small GPS unit around 1x1x0.2". Match this 
> with a patch 
> > antenna, 0.8x0.8x0.3" and you have a very small GPS. This still 
> > required 3.3V to operate. The unit spits out NEMA/RS232 format. Not 
> > sure if it is still available.
> >
> > Derek Koonce
> > KE6JTP
> >
> >
> >
> This approximates a Garmin GPS18.   Why bother to mate a separate 
> receiver and antenna, and then encase it when the GPS18 has 
> already done 
> this for you? And probably cheaper.      A GPS18 is small and light 
> enough that you could Velco it to the back of a TH-D7, and 
> steal power 
> directly from the battery pack terminals.      Or consider the Garmin 
> ForeTrex 201 wrist-wearable GPS which will run 10-15 hours on it's 
> internal lithium -ion rechargeable battery.  Details and review on my 
> website at:
> 
>       < http://wa8lmf.net/ForeTrex >
> -- 
> 
> Stephen H. Smith    wa8lmf (at) aol.com
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