[ARC5] Plain, "B" and other versions ("E") of receivers

[WA5CAB at cs.com]

Equipment nomenclature (either a new SCR, BC, etc. number or a revision or 
alternate contractor letter) was set (assigned) during the order writing 
process.  Once set, the nomenclature was not (usually??) re-used (recycled) if 
the order was cancelled at any stage past the assignment point.  There are 
dozens if not hundreds of numeric and letter examples (not counting letter 
"I" or "O").  That is probably what happened.  However, there is one (that 
I've noticed) example where it just appears as though a lot of letters were 
just skipped.  I'm referring to the BC-191-N, where they apparently skipped 
GHJKLM for no known reason.  So it could be either reason but I would lean 
toward the former one. 

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

In a message dated 05/08/2014 01:00:01 AM Central Daylight Time, 
k3mxo.hi at gmail.com writes: 
> What happened to the BC-nnn-C and -D in the SCR-274-N series?
> 
> Best Regards,
> 
> Michael, K3MXO