[Milsurplus] BC-312 Dunamotor hinge brackets.

WA5CAB at cs.com WA5CAB at cs.com
Wed Dec 12 12:48:15 EST 2007


I'll add a bit of hard-learned information.  Not counting the attachment 
screws, there are six parts to the bracket sets.  Two, the large brass, plated 
brass or steel (depending upon what you find) shoulder screw are interchangable 
between all of the receiver variants.  The other four (two brackets mounted to 
the front panel and two mounted to the DM-17, DM-21 or RA-20) are not.  If you 
have an early model BC-312 that someone put a home-brew AC supply into or any 
model BC-312 that someone installed an RA-20 in, you will have to have all 
four parts.  Plus in both cases a little re-wiring to do.

The 2C4312/B50 Signal Corps Stock Number that Fair lists is actually part of 
a conversion kit to replace the DM-17 in early receivers with a DM-21.  It 
(originally) includes a replacement terminal board for the one mounted to the 
bottom of the chassis above the center of the dynamotor.  As Fair lists the 
condition of the bracket set as Used, probably the terminal board is not included, 
but you could ask if it matters.  If no one butchered that board in your 
receiver, it shouldn't matter.  The differences in wiring between the BC-312/314 
and BC-342/344 don't involve that board.

In a message dated 12/12/2007 10:56:50 AM Central Standard Time, 
W7QHO at aol.com writes: 
> 
> >> Anybody have a set of hinge brackets to mate a DM-21 to a BC-312?.  I 
>> could
>> fab substitutes, but for so many reasons, I'd rather find an original set.
>> 
>> 
> 
> 
> Tom,
> 
> Looks like Fair Radio has these,  Check under "dynamotors."
> 

Robert Downs - Houston
<http://www.wa5cab.com> (Web Store)
MVPA 9480
<wa5cab at cs.com> (Primary email)
<wa5cab at comcast.net> (Backup email)
   
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