Hey Bob, (and whoever else has got one of these things)
I'm curious as to what degree of progress has been made using these
little modules as-is. I know some people are pulling the M8T modules off
to upgrade other systems but I want to try and use it as it was
designed, as much as I can
measurement
Subject: Re: [time-nuts] Ebay Huawei Ublox M8T Modules Warning
Hi
What leads you to believe that these:
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
Are fakes?
Bob
>
ary 4, 2021 7:01 PM
> To: Discussion of precise time and frequency measurement
>
> Subject: Re: [time-nuts] Ebay Huawei Ublox M8T Modules Warning
>
> Hi
>
> Again, in case anybody else is interested ….
>
> https://www.ebay.com/itm/ON-SALE-U-BLOX-ublox-LEA-M8T-0-1
and frequency measurement
Subject: Re: [time-nuts] Ebay Huawei Ublox M8T Modules Warning
Hi
Again, in case anybody else is interested ….
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.l
Hi
Again, in case anybody else is interested ….
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
Turns out to be a bit more than what the listing implies. The parts I got
also came with
Hi
I don’t know if anybody else bought any of these or not.
> On Jan 9, 2021, at 10:20 PM, Bob kb8tq wrote:
>
> Hi
>
> Just for the sake of listing all the variations:
>
>
Hi,
On Montag, 11. Januar 2021 23:32:24 CET Nigel gm8pzr via time-nuts wrote:
> Noticed Bluegirls changing her listing based on Nigel's false information.
Well, the change to the power supply voltage is certainly correct. The antenna
supply rating is at least safe now. It might be OK to feed 5V
Noticed Bluegirls changing her listing based on Nigel's false information.
Hm Really?
Please help me understand what false information I'm supposed to have provided?
I've explained to the seller that the supply voltage should be quoted as a
nominal 3.3V, with a maximum of 3.6V,
Are you heating the underside of the board with the hot air or the module
side? I was thinking that I'd try heating the underside of the board with
high temp hot air and then try to gently pry the module off. This probably
only requires three hands, so I should be good!
Philip
On Mon, Jan 11,
Do they have a ground pad on the underneath of them which solders to the
board?
If not then I'd suggest methodically working your way round them with
solder wick, removing as much solder as you can before slipping the tip of
a fine blade under a corner to apply the slightest leverage, you then
On Montag, 11. Januar 2021 15:53:30 CET paul swed wrote:
> With respect to the cut boards they are about 5 layers and some of the
> layers are shorted by the cut. Perhaps sanding them down would allow the
> boards to be used directly. My luck at popping the module off the board has
> not been very
Hi
Pulling those modules off a multi-layer board is an art. Some seem to be able
to do it, others not so much. Applying a *lot* of heat (like with a torch !!!)
seems
to be one way to do it. Since the module is soldered internally, it is tricky.
That’s
why the “assemblies” at roughly the same
In the past removed more than 10 5T's with no problems using a Propane Torch,
tapping the board and the devices did slide off. No problem.
Noticed Bluegirls changing her listing based on Nigel's false information. For
the record pin 18 of the LEA devices is a very nice feature
With respect to the cut boards they are about 5 layers and some of the
layers are shorted by the cut. Perhaps sanding them down would allow the
boards to be used directly. My luck at popping the module off the board has
not been very successful so far.
Regards
Paul
On Sun, Jan 10, 2021 at 10:03
Hi
There appear to be a lot of the cut off boards. The assemblies may well be
usable “as is”. It’s too bad there aren’t more of them. At the price, they are
(used to be) an attractive alternative.
Bob
> On Jan 10, 2021, at 8:41 PM, Didier Juges wrote:
>
> ebay seller Queen's Land sent me
Can somebody point me to a connection diagram for the external connections tp
the carrier boards?
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Am Samstag, 9. Januar 2021, 23:38:35 CET schrieb gandal...@aol.com:
> Now a question, supposing someone did follow that diagram and applied 5
> Volts to Vcc on the M8T, what is the risk of damage and would it be
> immediately obvious?
The commonly agreed upon definition of an abs max rating is
Many thanks for the comments on this, I've since heard from the seller who
tells me they were listed as tested after being pulled from working kit and
haven't been tested since at 5 volts, phew:-)
I remember the missing diodes on fluke.l's version of the Tbolt monitor, and
also seem to remember
We use the board but my boards are presently in Connecticut so I can not check.
Pin 18 of the Ublox is used to feed power to an active antenna that is why the
Rf pin does not have a capacitor. I have fed 5V in to pin 18 on ny Saw Tooth
boards. Some one check if pin 8 in question is connected
On Samstag, 9. Januar 2021 23:38:35 CET Nigel gm8pzr via time-nuts wrote:
> I've dealt with this seller before, always been very happy with the results,
> and agreed a price on three such modules which arrived just before
> Christmas, for reference this particular Ebay ID was 333619130232, and
>
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
For reference, my original Thunderbolt Monitor had a 3.3V CPU (3.6V max)
and a "voltage regulator" from the 5V consisting of two silicon diodes in
series. That worked very well. The original kit still runs, 10 years later.
When Fluke.l (of eBay fame) copied the design, he saved the cost of the two
...@aol.com
Subject: [time-nuts] Ebay Huawei Ublox M8T Modules Warning
During the December conversation re LEA-M8T modules on scraps of PCB from Ebay
I commented that the same seller also had complete circuit boards available,
and suggested this might be a worthwhile alternative.
I've dealt
H
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
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
> On Jan 9, 2021, at 5:38 PM, Nigel gm8pzr via time-nuts
> wrote:
>
> During the December conversation re LEA-M8T
During the December conversation re LEA-M8T modules on scraps of PCB from Ebay
I commented that the same seller also had complete circuit boards available,
and suggested this might be a worthwhile alternative.
I've dealt with this seller before, always been very happy with the results,
and
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