{Collins} Re: Part number inquiry.





On Tue, 5 Aug 2003 08:03:49 EST <hhresco@xxxxxxxxxxxxx> writes:
> Howard, W3HM the "Black Box" restoration guy, suggested that I ask 
> the CCA list
> about this item.
> 
> I've got a part that I can't identify.
> 
> It's a crystal filter, the label reads:
> 
> 
> ==============
> 
>    part number: 526 7687 003
> 
>    type: X24K10B020
> 
>    serial: 6453
> 
>    Collins Radio Company 
>    Newport Beach, California  USA
> 
> ===============
> 
> 
> It's huge, measures 2.75 inches by 1 inch base.
> 
> and stands 3 inches tall.  
> 
> Reminds me of a Heathkit SB filter that grew up.  It has a similar 
> shape, rounded
> corners with screw and solder connections on the bottom 
> 
> 
> Written on the box in pencil is the comment, 
> 
>    2.4 kc
>    BW 20 HZ
> 
> That seems to decode from the type number but 20 HZ?  A crystal that 
> resonates at
> 2.4 kc????  
> 
> The cardboard box has the Collins logo on both ends and the words 
> "CRYSTAL FILTER".
> 
> The box measures 2.5 by 2.5 inches and 5 inches tall.  Looks like a 
> 6146 box.
> 
> There's penciled comment: 
> 
> 
>    TESTS OK 
>    FREQ & IMPULSE 
>    GBB 9/29/65 
> 
> 
> I was hoping that it was something that I could use for radio 
> restoration and
> upgrades but I can't figure out what it is.
> 
> Anyone know what this is and what it was used for?  
> 
> de ah6gi/4 
> 
> 

Hi,
   Close... the part number reads as  24.1 KHz  with a 20 Hz bandwidth.

    I don't know where that goes in a radio.  :-)

73 & Good morning,
   Marv WC6W






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