[OZAPRS] TinyTrack3 Plus GPS Combo- Problems

Michael Carey michaelcarey at internode.on.net
Mon Apr 13 20:29:18 EST 2009


What type of GPS are you using, how are you powering both the GPS and 
the TT3. Are you supplying 12V through the radio connector and using the 
TT3 onboard 5V regulator to supply 5V to the GPS? 
Did you get the TT3+ with the bigger 5V regulator? The 78L05 reg in a 
normal TT3 isn't up to powering a lot of 5V GPS receivers as well as the 
TT3 circuit.

Michael.
VK5ZEA

David and Justine Olsen wrote:
> I purchased a fully built (not kit) TT3 Plus with GPS. It arrived 
> today, and I expected to be able to configure it an be on the air in 
> no time.
>
> Apart from the fact it came with the wrong radio to TT3 cable, there 
> seems to be other issues.
>
> I configured the TT3 using the software provided, then attached to 
> power and GPS (couldn't attach to radio as the wrong cable was supplied).
>
> The lights flash as they should, but the GPS Valid (green light) does 
> not come on. I left the GPS powered for hours, but still nothing. I 
> changed the configuration to allow TTL send, and the lights flashed in 
> the correct fashion, but still no solid green light. The J7 jumper is 
> configured for 5Volts which is correct for the GPS I am using.
>
> I do not have a laptop so I can't run GPS  terminal software in a 
> place where the GPS can see the sky but being new, surely it works :-).
>
> Any ideas???
>
> David VK4MDX
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> Ozaprs at aprs.net.au
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