[time-nuts] LTE Lite SkyTraq chip info

paul swed paulswedb at gmail.com
Wed Nov 26 11:01:35 EST 2014


As I say a most useless website.
Regards


On Tue, Nov 25, 2014 at 10:35 PM, Dave Martindale <dave.martindale at gmail.com
> wrote:

> I spent a bit of time poking around the SkyTraq web site on the weekend.  I
> couldn't find a datasheet for the chip on the LTE-Lite - perhaps it's so
> new that SkyTraq has not put together the datasheet yet.
>
> Under "timing", they only list the Venus638LPx-T, which is a older (2011
> copyright on the datasheet) 65-channel receiver.  The LTE-Lite
> documentation mentions 65 channels somewhere too, suggesting that the
> LTE-Lite started out using this chip.  Under navigation receivers, Skytraq
> lists the newer (2013) Venus838FLPx with 167 channels.  So I would assume
> that the Venus838LPx-T-L used in the LTE-Lite is the same 167-channel
> hardware with timing firmware, and that the LTE-Lite switched from the
> 638LPx-T to the 838LPx-T-L sometime during development.
>
> - Dave
>
> On Tue, Nov 25, 2014 at 5:12 PM, S. Jackson via time-nuts <
> time-nuts at febo.com> wrote:
>
> > Now that the cat is out of the bag - notice that on these boards we used
> > the special -T timing version which is more than twice as expensive than
> > the
> > normal navigation version used by others.. I personally use the uBlox
> > software because the Skytrack software had a habit of crashing itself and
> > my
> > computer from time to time..
> >
> >
> > In a message dated 11/25/2014 14:02:41 Pacific Standard Time,
> > paulswedb at gmail.com writes:
> >
> > Here is  a link to a company that at least shares details of the SkyTraq
> > venus 8  chip on the LTE-Lite. The actual skytraq sites is pretty
> useless.
> >
> >
> >
> https://www.tindie.com/products/smokingresistor/venus838flpx-gps-breakout-bo
> > ard/
> >
> > There  is a program that will read the nema codes and such also.
> > Have used it and  its not better or worse then ublox. A bit of humor it
> > only
> > ever shows Asia  for the ground track.
> >
> > The venus 8 seems to have a lot of capability.  Not sure how to get to
> it,
> > but the fact is for the LTE Lite its not needed.  It has a single job to
> > perform.
> > It would be curious to obtain the board  tindie sells because it supports
> > all of the satellites. But have to say  thats a project for another day
> > wayyyy down the list.
> > But at least you  can have some further technical details for the
> system.
> > Regards
> > Paul
> > WB8TSL
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