[aprssig] GPS attachment for Kenwood TH-D7?

[Greg Clark]

There are lots of bare GPS modules out there for under $100.   I know of at
least one with an integrated voltage regulator and 'supercap' that's used to
retain the ephemeris/almanac data.  I think it's the EM-406A (it's on
www.sparkfun.com).

Only problem is it outputs TTL level data, so you'd need to convert that to
RS232 levels.

For my BeeIine GPS/APRS transmitter, I use the Trimble Lassen IQ -- that one
requires an external regulator and external coin cell to backup the memory,
but it's smaller, lower power and has been confirmed to work well at high
altitudes (>18K meters).

-- Greg





On 5/26/07, Scott Miller <scott at opentrac.org> wrote:
>
> Hey, I've got the same paperweight!  =]  Actually, mine gets use as a
> booth
> display now, so it's not a total loss.  If I ever figure out what part(s)
> need to be replaced to get it working again, I'll let you know.
>
> My Deluo rep said they had a unit with a built-in regulator, but I don't
> see
> it listed.  I'll have to ask him which one he was talking about.
>
> Scott
> N1VG
>
> > -----Original Message-----
> > From: aprssig-bounces at lists.tapr.org
> > [mailto:aprssig-bounces at lists.tapr.org] On Behalf Of Jason Winningham
> > Sent: Saturday, May 26, 2007 10:47 AM
> > To: TAPR APRS Mailing List
> > Subject: Re: [aprssig] GPS attachment for Kenwood TH-D7?
> >
> >
> > On May 26, 2007, at 12:07 PM, Stephen H. Smith wrote:
> >
> > > 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
> >
> > Just remember that once you cut the cigarette lighter plug off a
> > GPS18PC, you then have a GPS18LVC.  The regulator is inside the
> > lighter plug.  Such an arrangement would need +5V voltage regulation.
> >
> > I have an expensive paperweight on my desk becasue a student group
> > didn't realize this, and fec unregulated +15 or so into an 18PC.
> >
> > -Jason
> > kg4wsv
> >
> >
> >
> >
> > _______________________________________________
> > aprssig mailing list
> > aprssig at lists.tapr.org
> > https://lists.tapr.org/cgi-bin/mailman/listinfo/aprssig
> >
> >
>
>
>
>
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