[ARC5] [Milsurplus] Question: What is a BC-688-A?

[WA5CAB at cs.com]

Database says receiver of Radio Altimeter SCR-518.  I had one 15 years ago 
but think it went to August.

In a message dated 8/31/2009 6:39:06 PM Central Daylight Time, 
jcoward5452 at aol.com writes: 
> Thanks everyone,in advance.
>   I just have the housing with tags and connectors and the contract date 
> indicates 1942.Just would like to know what it was.BTW this will become 
> a power supply as it is just an aluminum shell,not even a tube socket 
> left in it.So I hope you all don't drag me over the coals if I make 
> something useful out of it.I will retain the outward appearance as best 
> I can but may have to change the connectors to something more to my 
> specs.I won't drill if I can help it!
> 

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480