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sorry, that should read "... would <b><i>NOT</i></b> operate or communicate...".
<br>Gary
<p>Gary wrote:
<blockquote TYPE=CITE>One other little known fact is if you let your power
supply to the GPS18
<br>drift below 4.7Vdc then it will freeze up on the next memory write.
The
<br>memory writes happen periodically and are not displayed in any way.
This
<br>really does happen. As one of the first in this group to use a GPS18
I found
<br>out first hand how voltage sensitive the GPS18 is. Using a common 9V
battery
<br>as a power source (via a solid state 5V regulator) mine eventually
and slowly
<br>ran down until it reached the minimum threshold of the regulator (about
7Vdc)
<br>then the regulator's output dropped accordingly. In short order the
GPS18
<br>locked up and would operate or communicate. Garmin replaced it under
warranty
<br>but getting answers from Garmin took hours of calling and digging.
I finally
<br>got a service manager to explain the problem. They realize this shortcoming
<br>in the GPS18's design but they won't be correcting it. I have also
been using
<br>the GPS15H which has internal regulation but it is not packaged the
same way
<br>and it requires an external antenna.
<br>Gary
<p>clayj@nwlink.com wrote:
<p>> The regulator is in the lighter plug - there's a VERY specific warning
on
<br>> either the GPSCity (where I actually ordered my LVC) or Garmin web
site.
<br>>
<br>> If you put ANYTHING over 5V on the LVC, you'll fry it.
<br>>
<br>> Clay
<br>> N7QNM
<br>>
<br>> > Scott I have the LVC model, i hav a reg in line
<br>> >
<br>> > I think they have a reg in the cigarette lighter. do not quote
me tho
<br>> >
<br>> > -----Original Message-----
<br>> > From: aprssig-bounces@lists.tapr.org
<br>> > [<a href="mailto:aprssig-bounces@lists.tapr.org">mailto:aprssig-bounces@lists.tapr.org</a>]On
Behalf Of Scott Miller
<br>> > Sent: Wednesday, 14 September 2005 5:50 AM
<br>> > To: TAPR APRS Mailing List
<br>> > Subject: [aprssig] Garmin GPS 18 question
<br>> >
<br>> >
<br>> > I see that the GPS 18 PC takes up to 30 volts. Does anyone
know if the
<br>> > regulation is done in the unit itself, or is it in the cable?
In other
<br>> > words, if you cut off the cable, is the PC the same as the LVC
version?
<br>> >
<br>> > Scott
<br>> > N1VG
<br>> >
<br>> >
<br>> > _______________________________________________
<br>> > aprssig mailing list
<br>> > aprssig@lists.tapr.org
<br>> > <a href="https://lists.tapr.org/cgi-bin/mailman/listinfo/aprssig">https://lists.tapr.org/cgi-bin/mailman/listinfo/aprssig</a>
<br>> >
<br>> >
<br>> >
<br>> > _______________________________________________
<br>> > aprssig mailing list
<br>> > aprssig@lists.tapr.org
<br>> > <a href="https://lists.tapr.org/cgi-bin/mailman/listinfo/aprssig">https://lists.tapr.org/cgi-bin/mailman/listinfo/aprssig</a>
<br>> >
<br>> >
<br>>
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