[time-nuts] Inside of FT1200-100

Christopher Hoover ch at murgatroid.com
Wed Nov 23 15:30:31 EST 2016


And of course it is a discontinued part.

Taking suggestions for a replacement.   COG(NP0)?


On Wed, Nov 23, 2016 at 12:25 PM, Christopher Hoover <ch at murgatroid.com>
wrote:

> Part number decoder on page 4 of:
>
> http://www.mouser.com/catalog/supplier/library/pdf/AVXGlassDielectric.pdf
>
> CY = glass
> 06 = case size
> C = operating temp (-55 C to +125 C)
> 240 = 24 pF
> J =  tolerance (+/- 5%)
>
>
>
> On Wed, Nov 23, 2016 at 12:19 PM, Christopher Hoover <ch at murgatroid.com>
> wrote:
>
>> OK, I think this folded-over cap sets the nominal XO frequency:
>>
>> (link in case it doesn't go through: https://goo.gl/photos
>> /XHUCKTnC3NAB5rKD6 )
>>
>> I read the p/n as CY06C240J.   24 pFs?  CGW would seem to be Corning
>> Glass Works.
>>
>>
>>
>>
>> On Wed, Nov 23, 2016 at 8:57 AM, Tom Van Baak <tvb at leapsecond.com> wrote:
>>
>>> > Chris enjoying the pictures. Most likely I will never run into one of
>>> these
>>> > oscillators. But it is nice to know that you have gone "where no man
>>> has
>>> > gone before". Star Trek? Not sure.
>>> > Regards
>>> > Paul
>>> > WB8TSL
>>>
>>> Paul,
>>>
>>> I have quite a few vintage FTS 1200's here and will be doing a grand
>>> comparison in a few months. They are known for extremely good ADEV, way
>>> down in the -13's. I'll put your name on one of them.
>>>
>>> /tvb
>>> _______________________________________________
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>>
>>
>
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