[OZAPRS] Uniden GPS301

Warren VK3BYD vk3byd at wia.org.au
Mon Aug 8 08:40:00 EST 2005


Hi Gavin,

I may have missed something, but...

How are you telling the GPS you want 4800 instead of 9600 out?

73
Warren.

----- Original Message ----- 
From: "Gavin Rogers" <grogers at vk6hgr.echidna.id.au>
To: <ozaprs at marconi.ics.mq.edu.au>
Sent: Sunday, August 07, 2005 3:46 PM
Subject: RE: [OZAPRS] Uniden GPS301


> At 06:29 AM 7/08/2005, you wrote:
> 
> >Hi Gavin,
> >
> >I'm assuming you are running Windows something.
> >
> >Try tuning off the FIFO buffer on the new laptops serial port.
> >Also check to see what com port number windows has allocated to your
serial
> >port.
> >
> >Does the GPS require some kind of prompt to turn on?
> >
> 
> Hi Everyone.
> 
> Thanks for the suggestions.
> 
> I would be perfectly happy with 9600 baud output except for the 
> TinyTracker3 only taking input at 4800 baud. I've used a few computers
now 
> and the results are the same - perfect 9600 baud and garbled 4800 baud.
> 
> The Uniden GPS301 is a Sony IPS GPS in a Uniden case and a LED display
to 
> show waypoints, red light cameras etc. The IPS is directly addressable 
> through the Uniden's serial port - i.e. I can issue @NC 00000000 and all

> the NMEA output switches off. This all works at 9600 but not at 4800.
The 
> (little) information I can read about the IPS GPS is that it's serial
port 
> speed is set with jumpers, so I'm assuming the GPS301 firmware takes
care 
> of setting those.
> 
> I don't have a CRO but can get my hands on one...
> 
> I've emailed Uniden to see if they can confirm if 4800 baud output
should 
> work properly. Perhaps mine is faulty? <shrug>
> 
> 
> 73
> Gavin.
> 
> ---
>        Gavin Rogers                     |  Amateur radio station VK6HGR
>      http://www.livingwaters.com/good   |     http://vk6hgr.ampr.org/
>      ICQ: 17230395  MSN: VK6HGR  Skype/Email:
grogers at vk6hgr.echidna.id.au
> 
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