[Test-Equipment] Blackhawk Xtal Filters

[chearn at widomaker.com]

All I can contribute is to recall having bought some Blackhawk SSB  
(asymmetrical BPFs) for a NASA hardware project about 1968.  I don't  
recall Blackhawk being around much after that time period.  Chase/K4AFW

Quoting Tom NØJMY - AAR7FV <tfarl at mchsi.com>:

> I recently gutted a piece of Siemens telephone test-equipment, a  
> Pegelmusser or something, and it had a couple of crystal bandpass  
> filters in it.
>
> They were made by Blackhawk Engineering Company of Janesville,  
> Wisconsin. The model numbers are SS-14485-1B and SS-14486-1B.   
> They're roughly 2 1/2" long x 1 1/8" wide x 1 5/8" tall.
>
> Can anyone out there decipher these numbers for me?  Or shed any  
> other light on what the spec's would be?
>
> Thanks,
> Tom ______________________________________________________________
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