[Milsurplus] BC-344-D

[WA5CAB at cs.com]

Joe,

BC-312, 314, 342 and 344 are all covered in TM 11-850.  There were several 
editions, the final being 09/46.  There were only two models of BC-344 built, 
the basic and the -D.  The -D is only covered by the final TM 11-850 edition.  
Unfortunately, I've sold out of extra originals.  One of these days I may get 
around to completing a decent reprint but it won't be any time soon.  There are 
three scanned copies of the 09/46 floating around the Internet, claimed by 
seven or eight different people.  Quality varies between poor and terrible.  But 
they're free.  

There is also a Repair Instructions manual, TM 11-4002, covering BC-314-(*) 
and BC-344-(*) (all models).  Reprint available.

If you have one of the numerous PIB's covering a single model of BC-342, it 
won't really help much.  The answer to your second question is "sorta".

The answer to your third question (which I forgot to copy forward) is 
"exactly the same as in the BC-312, 314 and 342".  You will probably need to rebuild 
the dual electrolytic in the RA-20.  There are no new replacements available 
and if you try to replace it with an axial lead TV universal replacement dual, 
you'll build a fire hazard into your set.  Otherwise, you may need to rebuild 
some of the triple .05's.  The .047 axial lead metallized polyester units that 
Fair sells are perfect for the project.  I've done several dozen of them.  
They also work OK for the flat paper units if you find any leaky.  But in 
general, there aren't any capacitors in the BC-312 family other than the RA-20 
filter whose failure might destroy something you'd have a hard time finding a 
replacement for.  


In a message dated 5/28/2006 4:09:28 PM Central Daylight Time, 
carolew at bellatlantic.net writes: 
> I'm just starting to work on a BC-344-D and need some advice. I've worked
> on a couple of BC-342s but this is my first BC-344-D.
> 
> 1. What is the technical manual for the BC-344-D and were can I get it?
> 
> 2. How similar is the BC-342 to the BC-344? I have the manual for the
> BC-342.
> 

Robert Downs - Houston
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