[time-nuts] FE-5680A arrived

Peter Bell bell.peter at gmail.com
Wed Jan 11 03:48:45 UTC 2012


Hi, Joseph

The unit number just seems to be a mechanical serial number - all you
can really say about it is that higher numbers are newer.  The most
useful number is the 4 digit prefix on the serial number - this is an
EIA format date code (two digits of year, two digits of week)  - all
the units I've seen have been from '03 or '04 - the newest one I have
is 0420 - so dating from early June 2004.  There is also another date
/ revision label on the main PCB (visible by removing the bottom
cover) - this seems to be the PCBA build date.

Regards,

Pete

On Wed, Jan 11, 2012 at 9:03 AM, Joseph Gray <jgray at zianet.com> wrote:
> With all the talk on the list about these things, and considering the
> price, I could no longer resist temptation and ordered two from
> nichegeek.
>
> First, I was amazed at the speed at which I received these units. The
> order was placed last Friday, the shipment went out late Saturday and
> I received them today (Tuesday). In my experience, it has always taken
> two weeks or more to receive anything from China. I couldn't believe I
> got these in just three days.
>
> BTW, I paid $38 each with the free shipping. An outstanding deal IMO.
> I also received the semi-useless freebies.
>
> My only quibble so far is that both units were packed in nothing more
> than a large envelope, with a thin layer of bubble wrap added. Nothing
> is dented or rattling around, so hopefully they are OK. I'm just about
> to wire up a cable and power them on, so I'll know soon.
>
> The units I got have numbers of UN 71xxx and UN 78xxx. I don't know
> exactly what this means, but according to the ebay sellers, they are
> claiming that 6xxxx and 7xxxx numbers indicate newer units. Can anyone
> decipher this number sequence?
>
> Joe Gray
> W5JG
>
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