[time-nuts] Thunderbolt hardware revisions

[George Dubovsky]

All,

The Label you are referring to is applied by the equipment mfgr, and has
only a loose correlation to the vintage of the Trimble unit inside the case.
The label has a bar code, a mfg serial number, the date the production bar
code was issued, the Andrew/Grayson assembly part number (A002206.G1), and
the revision letter of that assembly. Although I've never looked it up, I
think Rev E changed the 3 dB splitter to a different model. If your case
either has a small splitter attached, or 4 holes in the top cover where the
scrapmonger ripped it off, it is probably a Rev E. That says nothing
absolute about the vintage of the Thunderbolt inside.

73,

geo - n4ua

On Thu, Aug 11, 2011 at 12:54 AM, Ziggy <ziggy9 at pumpkinbrook.com> wrote:

> Well, if it's any help, on my rev E unit with the 'coarse' temperature
> chip, there is a sticker on the top (near the power connector) with a bar
> code, a date (3/14/05) and the Rev E designation. There's also a series of
> numbers that could be a serial number and some other kind of rev designator
> but their significance is not clear.
>
> My Rev D unit with the 'fine' temperature chip has a similar sticker dated
> 12/16/03.
>
> Paul - K9MR
>
>
> On Aug 10, 2011, at 5:55 PM, Richard W. Solomon wrote:
>
> OK, now, how old is old enough ?? Where is the units date code located ?
> Hopefully, the seller knows (or even cares) where to find it.
>
> 73, Dick, W1KSZ
>
>
> -----Original Message-----
> > From: Bob Camp <lists at rtty.us>
> > Sent: Aug 10, 2011 9:59 AM
> > To: 'Discussion of precise time and frequency measurement' <
> time-nuts at febo.com>
> > Subject: Re: [time-nuts] Thunderbolt hardware revisions
> >
> > Hi
> >
> > The real question is what's the date code on the unit? If the rev E part
> is
> > old enough to have the good thermometer chip in it - that's the one to
> get.
> >
> > Bob
> >
> > -----Original Message-----
> > From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> > Behalf Of David Garnier
> > Sent: Tuesday, August 09, 2011 10:19 PM
> > To: time-nuts at febo.com
> > Subject: [time-nuts] Thunderbolt hardware revisions
> >
> > Hi,
> >
> > I'm brand new to the time-nut odessy thing so please bear with me. ;-)
> >
> > I'm in the market to buy a used Thunderbolt, I have found a vendor that's
> > selling used Thunderbolt receivers and states one can have the choice of
> > PCB
> > revisions A, B or E.
> >
> > Does anyone have any specific info or determined the product history of
> > these guys?
> > Any information would be greatly appreciated.
> >
> > Thanks,
> >
> > Dave Garnier - wb9own
> >
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