[time-nuts] FE 5680A Warning

[Don Latham]

Whie we're on elementary sources, has anyone in the group bought a tiny
Cs standard yet?
Don

k4cle at aol.com
> Just an inkling of the number of cellular base stations out there!  And
> that's just the ones made by Motorola.  There's probably twice or three
> times that many made by Lucent (I believe Lucent calls their Rb units
> FTU's for frequency and timing unit).
>
> Connected by DROID on Verizon Wireless
>
> -----Original message-----
> From: Peter Bell <bell.peter at gmail.com>
> To: Discussion of precise time and frequency measurement
> <time-nuts at febo.com>
> Sent: Sun, Nov 13, 2011 18:32:26 GMT+00:00
> Subject: Re: [time-nuts] FE 5680A Warning
>
> The ones with the 2 labels have a date code as the 4 digit prefix on
> the S/N - so a unit that says "S/N 0416-756124" was made in week 16
> 2004.  All the ones I've seen date from 2003 or 2004.
>
> The board they were originally attached to was largely empty -
> although it did have a label indicating that the board name was "HSO"
> (presumably "high stability oscillator") and a part of serial number
> stickers in a format that instantly made me think "Motorola" (the P/N
> started with SGLA4000, IIRC).
>
>
> On Mon, Nov 14, 2011 at 1:49 AM, mike cook <michael.cook at sfr.fr> wrote:
>> Le 13/11/2011 18:21, Chuck Forsberg WA7KGX N2469R a écrit :
>>>
>>> Seems like a lot of folks selling these lately.
>>> Curious minds would like to know why.
>>
>> I expect they are lots from telecom providers who are are replacing
>> Â kit
>> that is being upgraded.
>> I don't see any date codes on the boxes. Has anyone who has delved
>> inside
>> seen any information on date of manufacture?
>>
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-- 
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are as significant as experiment, for thence comes quiet to the mind."
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"If you don't know what it is, don't poke it."
Ghost in the Shell


Dr. Don Latham AJ7LL
Six Mile Systems LLP
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