[GreenKeys] Mark & Space Octal Plugin Filters

[Bruce Gentry]

I will offer a guess they were made by someone for homebrew or kit 
terminal units.  The enclosures were commonly available in catalogs 
decades ago.  Probably some sort of multi section filter, pre-assembled 
and tuned.

         Bruce Gentry KA2IVY



On 8/21/19 10:31 PM, hwhall at compuserve.com wrote:
> Found these little beasties in the junk at the surplus store. Anyone 
> recognize what they may have come from?  Anyone want/need them? (hope 
> the 2 attached pics go thru okay)
>
> Wayne
> WB4OGM
>
>
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