[OZAPRS] U-blox GPS

[Carlos PECO BERROCAL]

Same radio here.
I put in a small box the GPS, a 8 VDC to 3.3 VDC DC/DC converter (to power
the GPS from the radio) and a TTL 3V3 to full-swing RS232 converter (for
the TMD700). My radio has a hack and the GPS goes to the sub-D connector, I
put 8 VDC power in a free pin there.

I had big problems with the RS232 converter as it was overheating and
stopping. It ended being a self oscillation due to the other half of the
converter (the path from the radio to the GPS) not being wired. Apparently
it is common in fake TTL to RS232 converter.

It has been going strong for months... until the lockdown :-(

73,
Carlos VK1EA



On Monday, April 20, 2020, Norm McMillan <vk3xci at gmail.com> wrote:

> Hmmm,Thanks Carlos. Have to level shift maybe? hooking it up to a Kenwood
> D700 or TinyTrack . May be more trouble than it's worth. The alternative is
> to replace the internal battery in the GPS 12. That sure is a lot of
> trouble!
>
> Norm vk3xci
>
> On Mon, Apr 20, 2020 at 3:44 PM Carlos PECO BERROCAL <
> carlos.peco at gmail.com> wrote:
>
>> Hi Norm,
>>
>> Yes, I have done it, with two different ones. I tend to remember that one
>> was TTL 5V and the other one was 3V3, so check with the scope.
>>
>> 73,
>> Carlos VK1EA
>>
>>
>>
>> On Monday, April 20, 2020, Norm McMillan <vk3xci at gmail.com> wrote:
>>
>>> Before I reinvent the wheel (Or try to!) has anyone successfully
>>> converted a U-blox  USB GPS stick for serial use? My venerable Garmin
>>> GPS-12 has reached the end of its useful life.
>>>
>>> Norm VK3XCI
>>>
>> _______________________________________________
>> OZAPRS mailing list
>> OZAPRS at aprs.net.au
>> http://lists.aprs.net.au/mailman/listinfo/ozaprs
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.aprs.net.au/pipermail/ozaprs/attachments/20200420/5e9e4316/attachment.htm>