[OZAPRS] ZL3HB

[Chris Hill]

Hi Rory and all,

Rory, can you email us the exact model of your GPS?  If you can send that
through, we'll check the manual online, and see if the output is RS-232 or
TTL?  (Almost certainly RS-232).

Can you confirm the following?

1.  The cable coming from the GPS has a DB9 Female on the end, and has
been
successfully used to view NMEA messages at 4800 N81 on a PC?

2.  The Tiny Trak unit has a DB9 Male connector on it, and was programmed
by
plugging it into the back of a PC via a null modem cable?

3.  You have the cable mentioned in point 1, above, plugged straight into
the Tiny Trak unit's DB9 Male connector?

4.  What makes you sure that the GPS isn't talking to the Tiny Trak?  Is
it
an absence of a 1 pulse per second flashing LED on the Tiny Trak?


Hopefully we can help you get it all working...  would be quite cool,
really!



73



Chris
vk6kch



-----Original Message-----
From: ozaprs-bounces at aprs.net.au [mailto:ozaprs-bounces at aprs.net.au] On
Behalf Of Tony Hunt
Sent: Tuesday, 25 April 2006 8:48 PM
To: ozaprs at aprs.net.au
Subject: Re: [OZAPRS] ZL3HB

Hi Rory and others.. Maybee to fill in a few gaps here I can offer what 
I know.. I cant remember what GPS Rory had but it did connect ok to my 
Laptop DB9 and I could see the NMEA strings.. That however does not mean 
that the GPS is proper RS232.. It might just have been a fluke..

 Maybee Rory if you can remind us what GPS it is we might have someone 
with experience on this one.. That is connecting the Rory GPS to the 
Tiny Track.

In VK5 we have alot of Motorola GT Oncore GPS's hooked up to Tiny 
Traks.. To do this we used a MAX232 chip as a level converter because 
the Motorola GPS used 5v logic. It seems the Tiny Track needs proper 
RS232 -12V and +12V ..

Before we get too carried away with level converters does anyone have 
any experience with Rorys type of GPS?? I cant remember for sure but I 
think it was a Magellan.. It was a handheld device.. It may be a matter 
of getting the correct setting on the GPS.. I did establish that he had 
4800 Baud N81 comming out of it but if the strings are not quite to spec 
the Tiny Track wont looks at it..


Tony Hunt Vk5AH  wavetel at bigpond.com
 




>Date: Tue, 25 Apr 2006 07:39:31 +1000
>From: "Rory Deans" <rory at hotkey.net.au>
>Subject: [OZAPRS] ZL3HB
>To: <ozaprs at aprs.net.au>
>Message-ID: <000601c667e7$93f4ad30$09541ad3 at compaq>
>Content-Type: text/plain;	charset="iso-8859-1"
>
>Hi all
>Have been trying to get my aprs going but still no luck. Still cannot get
the GPS to talk to the TNC.
>I suspect a signal level problem. With a cheap digital meteron 200Mv
range
get varying signals of 12 to 35 Mv but don't know whether this is enough
for
the TNC. May need an amplifier between. Does anyone know what level is
required?
>Am in Cairns & heading down to the Gold Coast for next weekend. If there
is
anyone on the Gold Coast who may be able to help I would appreciate it as
don't want to give up!! Can be contacted by email rory1 at xtra.co.nz or on
local mobile 0408178904
>Thanks
>Rory Deans  ZL3HB/VK6AEE ex VK4CTE
>
>Leave Oz for home on Tuesday 2nd May.
>
>  
>
>  
>
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