[Milsurplus] [Glowbugs] Unknown "DF" Mechanical Filter

[Glen Zook]

Probably a 2.3 kHz bandwidth 455 kHz filter.  I have no idea as to if it is a center type like those used in most amateur radio SSB units or if it is one of the types used for USB or LSB.
Glen, K9STH 
Website: https://k9sth.net 

    On Saturday, February 15, 2020, 11:35:18 PM CST, Hubert Miller <kargo_cult at msn.com> wrote:  
 
  
Anyone here know about a mechanical filter, blue color finish, 2 screw mounting with 3 pins at each end, similar size to small Collins,
 
with "DF" logo in circle, and this number on it:  No internet info found !
 
  
 
TYPE D.F-455-U-2.3-H      ( may be DF or D.F. )
 
P/N  7232-528-3
 
  
 
After today's hamfest, I decided I should hamfest at my storage, and I found this and 2 new boxed Collins 455 2.1 filters. Hmmm…..
 
I had no idea I owned these! 
 
thanks-
 
Hue Miller 
 

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