Author Topic: Ebay find. LEA-5T-high-precision-timing-GPS-module (Read 17032 times)

Deathwish · « **on:** August 15, 2015, 09:09:39 pm »

http://www.ebay.com/itm/UBLOX-LEA-5T-high-precision-timing-GPS-module-dev-board-1PPS-USB-RS232-ntp-ser-/251785217093

dkozel · « **Reply #1 on:** August 15, 2015, 10:45:10 pm »

Heh, the listing has a the seller's GPS coordinates down to the precise window I'd say.

Fraser · « **Reply #2 on:** August 15, 2015, 11:36:21 pm »

I bought a twin output 10MHz OCXO board from this seller. Good service, well packed and a nicely produced custom PCB with all the required supply conditioning etc. Good value for money IMHO.

Aurora

Deathwish · « **Reply #3 on:** August 15, 2015, 11:40:27 pm »

Did you get hit for customs ?. its the only thing that puts me off buying

Deathwish · « **Reply #4 on:** August 16, 2015, 12:00:45 am »

Quote from: Aurora on August 15, 2015, 11:36:21 pm

I bought a twin output 10MHz OCXO board from this seller. Good service, well packed and a nicely produced custom PCB with all the required supply conditioning etc. Good value for money IMHO.

Aurora

I just clicked buy it now on one of those. I now wait for customs to hit me

Vgkid · « **Reply #5 on:** August 16, 2015, 06:33:31 am »

I have s slightly different module, that uses the 6T, uses u.fl for timepulse1, ans sma for tp2.

max666 · « **Reply #6 on:** August 16, 2015, 08:07:56 am »

Quote from: Deathwish on August 15, 2015, 11:40:27 pm

Did you get hit for customs ?. its the only thing that puts me off buying

I would imagine that depends a lot on the country you are in. I ordered one just now, and based on my personal china ebay experience, I don't expect to hear from customs.

But I would love to hear what others think about the unit as a precision timing module.

dexters_lab · « **Reply #7 on:** August 16, 2015, 10:20:28 am »

Quote from: Deathwish on August 15, 2015, 11:40:27 pm

Did you get hit for customs ?. its the only thing that puts me off buying

if it's sent in the post there is a good chance you'll miss the VAT/Duty/Release fees on something that small

Fraser · « **Reply #8 on:** August 16, 2015, 03:17:59 pm »

I received no charges for VAT. I will say no more but it all depends what the seller write son the CN22.

Aurora

Deathwish · « **Reply #9 on:** August 16, 2015, 05:11:20 pm »

I didnt get the sat card, I got the same ocxo you got from them, so who knows. I couldn't afford the sat card at present. But its on my list with the hundred other things

Actually I am getting a little confused as I purchased a LEA-4 and a AD9850 module with some intent in mind but I forget what it was all about now.

bitslice · « **Reply #10 on:** August 17, 2015, 10:14:42 am »

For those in the UK watching this in black and white, this appears to be similar?

http://www.ebay.co.uk/itm/Mtron-GPS-Module-M9101S-Military-Defence-Systems-1PPS-/161794282422?

I was hoping that nobody else had spotted it, but now it's at £31

ends today, so be quick.

Deathwish · « **Reply #11 on:** August 17, 2015, 10:37:35 am »

I like that, dont understand why it has the sat gps receiver on it but then I expect some nice person will explain it. I expect it to have a number of watchers now you have posted it...

bitslice · « **Reply #12 on:** August 17, 2015, 01:44:52 pm »

Quote from: Deathwish on August 17, 2015, 10:37:35 am

I like that, dont understand why it has the sat gps receiver on it

I think it is one of these
https://en.wikipedia.org/wiki/GPS_disciplined_oscillator

Vgkid · « **Reply #13 on:** August 17, 2015, 11:39:40 pm »

^^^ correct.
so did anyone here win it.

Deathwish · « **Reply #14 on:** August 18, 2015, 12:00:11 am »

not me. i never even bid on it

Deathwish · « **Reply #15 on:** August 22, 2015, 11:06:13 am »

Quote from: max666 on August 16, 2015, 08:07:56 am

Quote from: Deathwish on August 15, 2015, 11:40:27 pm
Did you get hit for customs ?. its the only thing that puts me off buying

I would imagine that depends a lot on the country you are in. I ordered one just now, and based on my personal china ebay experience, I don't expect to hear from customs.

But I would love to hear what others think about the unit as a precision timing module.

Mine came today, marked as commercial sample £12. Seller did me proud and I am well chuffed.

max666 · « **Reply #16 on:** August 24, 2015, 11:08:10 am »

Mine arrived today (no customs

)

Other than that what should I say? It works.
Just did a quick test by sticking a GPS antenna out a north facing window (pretty much a worst case scenario), but it didn't take too long to get a fix and the 1pps LED was happily blinking away.

Deathwish · « **Reply #17 on:** August 25, 2015, 06:42:09 am »

I got a notification mine is on it's way, however its a bit curious, as it has a wnDirect consignment number and looking at their web site ( I have never heard of them before ) they do not seem to ship FROM china but from the UK to other countries, it says retailer is wndirect, then gives their ref number but also another that says DM Consignment Code: DMC0C58U ... So I have no real idea where this is coming from. possibly he is shipping from within the UK somewhere as well as HK / China

Wuerstchenhund · « **Reply #18 on:** August 30, 2015, 09:07:12 am »

Quote from: Deathwish on August 25, 2015, 06:42:09 am

I got a notification mine is on it's way, however its a bit curious, as it has a wnDirect consignment number and looking at their web site ( I have never heard of them before )

wnDirect is owned by DPD and is pretty new in the UK but managed to get a lot of business in recent years (i.e. is the UK service used by ebay's GSP so if you order something from the US via GSP then it will end up with wnDirect). They don't do the actual delivery, though, as wnDirect doesn't have any physical delivery vehicles and relies on Yodel and other sub-contractors including one-man businesses instead. Also, wnDirect's tracking is pretty much hit and miss and often updates only several days after an item has been delivered.

I order quite a few things from abroad and never had any problems with wnDirect aside from the crap tracking, but then I didn't have to deal with them directly anyways.

Deathwish · « **Reply #19 on:** August 30, 2015, 10:12:17 am »

Thank you Wuerstchenhund

Robaroni · « **Reply #20 on:** May 07, 2016, 10:43:59 pm »

Anybody had this awhile? How's it work?

Thanks,
Rob

Gyro · « **Reply #21 on:** May 08, 2016, 11:50:16 am »

At the moment you might also want to consider one of the cheap LEA-6T modules. More effort required on your part - RS-232 level translation, output buffering etc. You do however get the benefit of TWO programmable time-pulse / frequency outputs.

https://www.eevblog.com/forum/projects/ebay-u-blox-lea-6t-gps-module-teardown-and-initial-test/msg886887/#msg886887

Depends on your application of course.

Edit: and check that you're getting a LEA-6T and not a NEO-6 or alternative part.

jpb · « **Reply #22 on:** May 08, 2016, 01:11:23 pm »

The Lea 5T module has been around for a while.

What put me off is it doesn't have the variable, up to 10MHz, clock output of the Lea-6T so it is only 1PPS (I think this is the case, I may be wrong - it is hard to find old data sheets on the LEA site which now has moved beyond the Lea6T even.)

mmagin · « **Reply #23 on:** May 08, 2016, 03:36:53 pm »

I have one of these boards. It seems to work fine. I put it in a case and use it for NTP on one of my computers (via a non-USB serial port for low latency.) The PPS signal seems to be usefully routed to the serial port for that purpose.

Robaroni · « **Reply #24 on:** May 08, 2016, 04:24:57 pm »

Hi,
I want to use it for a DO. I'm going to write a program to voltage adjust my Milliren 260 through a DAC. I can use a one second pulse or a 10Khz and a PPL.


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Author Topic: Ebay find. LEA-5T-high-precision-timing-GPS-module (Read 17032 times)

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