[time-nuts] locate 6 digit digital clock

Don Latham djl at montana.com
Thu Jun 9 05:25:29 UTC 2011


See, in my former existence as a us gov't researcher, I was forced!
(yes) to buy stuff from GSA contract, even when the item could be had
cheaper and/or much higher quality. GSA is a dumping ground for
congressional district hacks. I'd avoid buying anything even tainted
with a whiff of GSA, except maybe Agilent or other major suppliers.
Just my hard-won $.02 inflated rasbucknicks.
Don

Robert Watzlavick
> I would avoid BRG clocks.  I've used them in two different companies now
> and they're pretty much junk in my opinion.  Both of the clocks I used
> had IRIG inputs and they only sort of work.  They seem to randomly lose
> IRIG lock every few days and will easily get 1/2 second off, even when
> locked.  The user interface is incomprehensible and takes me 20 minutes
> to figure out every time I have to adjust the UTC offset to display
> local time.  Finally the instruction manuals are too complicated to be
> useful.  It seems like they just keep tacking on features to firmware
> written 20 years ago, even with the new features don't fit the UI
> model.  When IRIG time wouldn't sync up on one of the units, I took it
> apart and found the clock to be constructed of a metal picture frame
> with the circuit boards loosely laying inside some green crafting foam
> and wires running all over the place.  Even my electronics projects when
> I was a kid looked more professional than these clocks.  When I
> reassembled it, the IRIG feature mysteriously started working again,
> sort of.
>
> The prices look very appealing but trust me, stay away - they just don't
> work.
>
> -Bob
>
> On 06/08/2011 03:46 PM, Bob Camp wrote:
>> Hi
>>
>> Found the GSA price list at:
>> http://www.brgprecision.com/pdffiles/brg_gsa_contract.pdf
>> Looks like you can get the basic no frills model for about $400 and
>> they go
>> up from there.
>>
>> Bob
>>
>> -----Original Message-----
>> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]
>> On
>> Behalf Of Bob Camp
>> Sent: Wednesday, June 08, 2011 4:35 PM
>> To: 'Discussion of precise time and frequency measurement'
>> Subject: Re: [time-nuts] locate 6 digit digital clock
>>
>> Hi
>>
>> I suspect that something like:
>> http://www.brgprecision.com/products/synchronized_clocks/poe6mega.php
>> would do the trick. No idea what they cost.
>>
>> Bob
>>
>> -----Original Message-----
>> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]
>> On
>> Behalf Of William H. Fite
>> Sent: Wednesday, June 08, 2011 4:07 PM
>> To: jfor at quik.com; Discussion of precise time and frequency
>> measurement
>> Subject: Re: [time-nuts] locate 6 digit digital clock
>>
>> I think he wants a clock that will actually tell time, rather than one
>> that
>> merely blinks *12:00...12:00...12:00...*
>>
>> [?][?]
>>
>>
>> On Wed, Jun 8, 2011 at 3:10 PM, J. Forster<jfor at quik.com>  wrote:
>>
>>> Why not just buy or scrounge a small microwave oven or VCR?
>>>
>>> -John
>>>
>>> ==================
>>>
>>>
>>>> Please add my "me-too" to this discussion.
>>>>
>>>> I would like to see a clock that simply tells time,  reminiscent of
>>>> the
>>>> ones I put together in the 1970s, but with LED displays
>>>> large enough to read from across a darkened room. I would prefer
>>>> 24-hour
>>>> format and I want a 6-digit display with seconds.
>>>>
>>>> For accuracy, I would want an internal TCXO, with the option of
>>>> using a
>>> 10
>>>> MHz or 1 PPS external signal when available,
>>>> but I want the clock to automatically switch to the internal
>>>> timebase if
>>>> the external signal is disconnected or lost
>>>>
>>>> With a PIC I would like to see a switch for PDT/PST, so I don't have
>>>> to
>>>> reset the clock twice a year. I would also like to see
>>>> an option for having the clock be self-setting or self-synchronizing
>>>> by
>>>> adding an inexpensive GPS module.
>>>>
>>>> I don't need date and I don't need DOW or DOY as I already have
>>>> other
>>>> clocks and watches that give me that information.
>>>>
>>>> It might be useful to have a smaller second line that would show me
>>> those,
>>>> and show me the time in UTC to keep track of
>>>> what time it is back in the "old country" when I want to listen to
>>>> Radio
>>>> Denmark on the Internet, but this would add to the
>>>> complexity and the number of solder points.
>>>>
>>>> And I would like all this to fit in a spare HP 2U half-width
>>>> rack-mount
>>>> case that I have saved for that purpose. This would
>>>> be a companion to my Thunderbolt GPSDO which is housed in an
>>>> identical
>>>> case. One option would be to mount the clock
>>>> in the same case as the Thunderbird, and have the second line
>>>> display
>>> your
>>>> choice of GPS signal.
>>>>
>>>> -- Flemming Larsen, KB6ADS/OZ6OI
>>>>
>>>>
>>>> ________________________________
>>>> Fra:Brooke Clarke<brooke at pacific.net>
>>>> Til:Discussion of precise time and frequency measurement
>>>> <time-nuts at febo.com>
>>>> Sendt:7:12 onsdag den 8. juni 2011
>>>> Emne:Re: [time-nuts] locate 6 digit digital clock
>>>>
>>>> By using a PIC you can do much more than just tell time, for example
>>>> display the Day of the Week and because the calendar is good back to
>>>> 1800 something you can set the clock back that far and know the DOW.
>>>> The next step was going to be to install a table of leap seconds so
>>>> that  you could replay any of those events in history.  See:
>>>> http://en.wikipedia.org/wiki/Zeller%27s_congruence
>>>>
>>>> Have Fun,
>>>>
>>>> Brooke Clarke
>>>> http://www.PRC68.com<http://www.prc68.com/>
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>>>>
>>>>
>>>
>>>
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>>
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>
>
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-- 
"Neither the voice of authority nor the weight of reason and argument
are as significant as experiment, for thence comes quiet to the mind."
R. Bacon
"If you don't know what it is, don't poke it."
Ghost in the Shell


Dr. Don Latham AJ7LL
Six Mile Systems LLP
17850 Six Mile Road
POB 134
Huson, MT, 59846
VOX 406-626-4304
www.lightningforensics.com
www.sixmilesystems.com




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