What can I do with a free GPS receiver with a coax connection?

Have a question or want to start a discussion? Post it! No Registration Necessary.  Now with pictures!

Threaded View
Is the free T-Mobile temporary GPS unit useful for anything else?

I think the FBI intercepted my shipment to place a surreptitious bug
inside, but finally my free T-Mobile personal hotspot Internet-to-Ceullar
home microtower arrived yesterday!
http://i.cubeupload.com/uNXXgZ.jpg

It's confusing because T-Mobile MARKETING calls everything a "personal
hotspot":
http://i.cubeupload.com/dIGbMo.jpg

So it's hard to distinguish the cellular-only microtower from the
internet-cellular microtower, but now I have both.
http://i.cubeupload.com/WoN2gQ.jpg

Interestingly the Internet-micro-tower comes with temporary GPS:
http://i.cubeupload.com/HCc6Ss.jpg

Can that temporary GPS be used for anything useful?

Re: What can I do with a free GPS receiver with a coax connection?

Quoted text here. Click to load it

The GPS unit will output single-line ASCII "sentences", some of which  
will contain very precise location and time info (GPS time, that is).

If you're interested, google on "NMEA 0183" to get a list of the things  
it can tell you.

Isaac

Re: What can I do with a free GPS receiver with a coax connection?
On Tue, 14 Feb 2017 21:52:57 -0800, isw wrote:

Quoted text here. Click to load it

NMEA 0183 is a combined electrical and data specification for communication
between marine electronics such as echo sounder, sonars, anemometer,
gyrocompass, autopilot, GPS receivers and many other types of instruments.
It has been defined by, and is controlled by, the National Marine
Electronics Association.

Can I somehow plug that NMEA-compliant cable into my phone?  
Or into my laptop?
Or a desktop?
https://www.fugawi.com/knowledge_base/document/HD25110

The wiring looks like it can maybe go to a DB9 but do laptops even have
DB9s nowadays?
https://www.fugawi.com/knowledge_base/document/HD25700

Re: What can I do with a free GPS receiver with a coax connection?

Quoted text here. Click to load it

Yes, it is. And if you look someplace like here:

http://www.gpsinformation.org/dale/nmea.htm

you can find a list of the "sentences" taht a GPS unit outputs/

Quoted text here. Click to load it

You may have to go right to the GPS subunit to get the data, but you can  
use any of several makes of serial-USB adapters, and any sort of TTY  
emulator your OS supports. FWIW, I have found ones using CP-2102 and  
Ft232 chips to be reliable, and ones with the PL2303 to be not so good.

Take care to get the polarity and voltages correct; most of the adapters  
(but not all) use "TTL-level RS-232", where the logic one and zero  
levels are inverted from "normal" RS-232. I have no idea what sort of  
signal levels that particular device emits.

The GPS unit will output ASCII "sentences" which are plain text.

Isaac

Re: What can I do with a free GPS receiver with a coax connection?


Quoted text here. Click to load it

Yes, if it can fit up Raeanne's snatch.
  


Site Timeline