[time-nuts] Cheap LEA-6T [was: Re: Precise Time transfer and relative position over ashort baseline]

[Dimitri.p]

They are using LEA-6T0-000
My 6T-0-000 reports
Software version 6.02(36023) and hardware version 00040007 in the UBX 
MON (Monitor) VER (Version)

In the datasheet there is no 6T0-0-000  but there is a 6T-2-000 with 6.2 FW.
LEA-6T
LEA-6T-0-001  ROM7.03
LEA-6T-1-001  FW7.03
LEA-6T-2-000  FW6.02

But not bad for less than 30 bucks

Dimitri



At 02:26 PM 4/12/2016, Attila Kinali wrote:
>On Mon, 11 Apr 2016 13:47:36 -0500
>Scott Newell <newell+timenuts at n5tnl.com> wrote:
>
> > BTW, there are some LEA-6T modules (with patch antenna, compass, 1PPS
> > led, and USB connector) intended for drone autopilot use on eBay for
> > around $30 shipped from China. (Search for "LEA-6T".) Mine showed up
> > on the day of my lightning strike, so I've barely played with it. It
> > has the 6.something ROM, connects to u-center, and appears to output
> > the +/-10 ns sawtooth error correction message and the RTKLIB
> > compatible raw data.
>
>There is something strange with these. For one thing, they are way too
>cheap. LEA-6T is still quite expensive when bought from u-blox directly,
>eventhough it came down from 180eur/pcs to 140eur. The prices these
>modules are selling are lower than the cheapest price i've ever seen
>for LEA-6T's, when bought in the 100s. So, either they bought them in
>swats of 10k or there is something amis...
>
>Also, why would anyone use LEA-6T in navigation module? That does
>not make sense. The power of the LEA-6T is as a timing module, not
>for navigation.
>
>And last, but not least, the pictures seem wrong. All the LEA modules
>i've seen, had two shield covers, one over the RF part and one over
>the digital part. Yet these shown in the pictures have only a single
>shiled. It might be that u-blox decided to use a single shield
>for them... though it would seem strange to do that to an already launched
>product that sells in relatively low volumes. Even more so, as I know
>that u-blox itself warned users of their modules to ensure an electrically
>quite enviornment around their modules, for maximum performance.
>
>
>So, i would warn people buying those that they might be fakes...
>
>
>                         Attila Kinali
>--
>Reading can seriously damage your ignorance.
>                 -- unknown
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