[time-nuts] Ebay Huawei Ublox M8T Modules Warning

[Didier Juges]

ebay seller Queen's Land sent me this picture of the back of the cut off
board. Apparently they still have a bunch.
https://www.ebay.com/usr/queen*s_land?ul_noapp=true

Didier KO4BB

On Sun, Jan 10, 2021 at 3:47 PM Bob kb8tq <kb8tq at n1k.org> wrote:

> HI
>
> Looking a bit more closely at the remains of the “chopped up” boards with
> the M8T’s on them …
> This board is *not* the source of those devices. What’s left of the
> marking on those boards
> does not line up with what’s on these (now sold out) boards.
>
> There seems to be at least one switching regulator on this board, a CPU
> (with JTAG programming
> connector ??),  and a fairly elaborate antenna bias / protection circuit.
> No idea what might be on the
> back of the board.
>
> With any luck, they will get more of these in stock.
>
> Bob
>
> > On Jan 9, 2021, at 10:20 PM, Bob kb8tq <kb8tq at n1k.org> wrote:
> >
> > Hi
> >
> > Just for the sake of listing all the variations:
> >
> >
> https://www.ebay.com/itm/ON-SALE-U-BLOX-ublox-LEA-M8T-0-10-HUAWEI-GPS-Timing-Module-Board/333778776570?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
> <
> https://www.ebay.com/itm/ON-SALE-U-BLOX-ublox-LEA-M8T-0-10-HUAWEI-GPS-Timing-Module-Board/333778776570?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649
> >
> >
> > Is the M8T on what I would *guess* is the original board. Simply from
> looking at the picture I think
> > you can guess pretty well what’s what on the board.
> >
> > Hint: If you buy quite a few …. errr … 10 … there s a pretty good chance
> that something more than
> > 20% might get knocked off the price …. I bought a pretty large pile of
> stuff so it’s not clear if that
> > had some impact on what offers got accepted …..
> >
> > If that’s not your favorite RF connector on the board, there are SMA’s
> that likely fit in the same footprint.
> >
> > Bob
> >
> >> On Jan 9, 2021, at 6:41 PM, Nigel gm8pzr via time-nuts <
> time-nuts at lists.febo.com <mailto:time-nuts at lists.febo.com>> wrote:
> >>
> >> Hmmmm
> >>
> >>
> >>
> >> was kinda thinking that might be the case, perhaps time to hope they
> weren't tested after all!
> >>
> >>
> >>
> >> Late here, will check tomorrow
> >>
> >>
> >>
> >> Nigel GM8PZR
> >>
> >>
> >>
> >> Hi
> >>
> >> The “normal chips” that should be inside the module all have something
> like a 3.6V max supply rating on them.
> >>
> >> I would guess that 5V will melt a goodly number of them.
> >>
> >> Bob
> >>
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