[time-nuts] Personal time keeping...

W4wj at aol.com W4wj at aol.com
Sat May 21 04:48:30 UTC 2011


Many radio stations had at least one Western Union clock that  generated a 
tone at the top of the hour.
 
The clock was designed so that it ran just a slight bit  fast.  As the top 
of the hour approached, the second hand would be  held momentarily at 00 
seconds,
then when the signal came down the line from Western  Union, the second 
hand was released and at the same time a relay was closed  to produce the
hour "tone."
 
Good stuff...
 
 
73, Don, W4WJ   
 
 
In a message dated 5/19/2011 11:21:20 A.M. Central Daylight Time,  
max at maxsmusicplace.com writes:

Is  anyone else old enough to remember when you would hear on the radio 
"Time  
at the tone, 5 o'clock.  Beep."  The tone was anywhere from half  a second 
to 
one second long and it might have been hard to pin down if the  beginning 
or 
the end of the tone was 5 o'clock but it was probably within  a couple of 
seconds accuracy which was plenty good for setting your watch  or the 
kitchen 
clock.  Why don't you hear that now a days?   Digital TV has latency which 
is 
dependant on the equipment used by the  cable or satellite company and is 
somewhat variable between receiver  manufacturers.  The engineer of our 
local 
public radio station told  me that digital radio has 7 seconds delay.  When 
I 
asked the station  manager if there were any plans to run studio time 7 
seconds ahead of real  time so listeners would get accurate time he just  
frowned.

Regards.

Max.  K 4 O D S.

Email:  max at maxsmusicplace.com

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----- Original Message  ----- 
From: "Steve Rooke" <sar10538 at gmail.com>
To: "Discussion of  precise time and frequency measurement"  
<time-nuts at febo.com>
Sent: Thursday, May 19, 2011 10:45  AM
Subject: Re: [time-nuts] Personal time keeping...


>A  number of years back the London Science Museum used to sell an  Einstein
> Relative Time Watch that just had the hours hand and was  marked around 
the
> dial, 1'ish, 2'ish, 3'ish, etc. I bought my ex one,  don't know if she 
> still
> has it. It's not the same as the new  ones I have seen via Googling as I
> think this was much more  fun.
>
> Steve
>
> On 20 May 2011 02:55, Burt I.  Weiner <biwa at att.net> wrote:
>
>>  Chuck,
>>
>> In another post I spoke about spending a few  days with a fellow from 
>> DATUM.
>>  A lot of our  idle chit-chat was about accuracy in timing and GPS 
>>  vs.other
>> off-air standards and propagation.  He told me about  his background in 
>> the
>> military and precision  measurements and about a watch he used to have 
>> that
>>  displayed in GPS seconds - fascinating stuffs.  I noticed that he  
wasn't
>> wearing a watch and I commented on that.  He told me  that he'd spent a 
>> good
>> part of his life knowing  precisely what time it was and still does the 
>> same
>>  thing in his work at DATUM.  He then went on to comment that he was 
tired  
>> of
>> knowing exactly what time it was and he personally  got sick of knowing 
>> the
>> exact time.  He also  said that looking at the kitchen clock once a day 
>> was
>>  close enough for him, that it reduced the stress on  him.
>>
>> Burt
>>
>> At 07:43 AM  5/19/2011, time-nuts-request at febo.com wrote
>>
>>> My  personal preference is for highly jeweled totally mechanical
>>>  automatic winding  wristwatches.  My hobby compels me to  have
>>> high accuracy time and frequency around, but my life  just
>>> doesn't run with that kind of  precision.
>>>
>>> -Chuck  Harris
>>>
>>
>> Burt I. Weiner  Associates
>> Broadcast Technical Services
>> Glendale,  California  U.S.A.
>> biwa at att.net
>>  www.biwa.cc
>> K6OQK
>>
>>  _______________________________________________
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>
>
>
> --  
> Steve Rooke - ZL3TUV & G8KVD
> The only reason for time is  so that everything doesn't happen at once. -
> Einstein
>  _______________________________________________
> time-nuts mailing list  -- time-nuts at febo.com
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>  


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