[Collins] help ID filters

[Dr. Gerald N. Johnson]

On 5/2/2010 7:29 PM, Raymond Cote wrote:
> I've noticed a few requests to ID filters.  The answers were referenced to lists that had filter info but no link or source to copy.
>
One filter list is at: http://www.collinsmuseum.com/filters.html I gave 
only the file name without the link because google can find the page 
from that name for you and I have it permanently downloaded to my 
computer without the link.

The other most authoritative file is the filter catalog at:
http://www.jptronics.org/radios/Collins/MECH_FILTERS/collins.filter_catalog.pdf 
I also have this one downloaded a decade ago as well as an original on 
paper. This dates from the early 60s and I'd like to find something a 
decade or two later, but I haven't yet detected anything later.

> My filters are as follows:
>
> F 500 Y 60 6551
> 526 9378-00
>
> and
>
> F 500 Y 60 6016
> 526 9378-00
> FSN 5915 846 0451

These are the same filter. The number groups 6551 and 6016 are date 
codes meaning the 51st week of 1965 and the 16th week of 1960.

 From the part number, the center frequency is 500 KHz the bandwidth is 
6.0 KHz and they are in the Y case which is a round case 7/16" diameter 
and less than three inches long. The Collins part number is 526-9378-00, 
FSN is the federal stock number as these were sold as components many 
times, not just parts used in Collins radios.
>
> Anyone?
>
> Also can you please post any available sources that I can download and keep next to my workbench for ready reference?
>
> Ray
> ______________________________________________________________
73, Jerry, K0CQ, Technical Adviser to the Collins Radio Association.