[Milsurplus] Deltrola DU-2 Loop

[WA5CAB at cs.com]

Navy SOP was to increment the model number with each new order, whether there 
were any differences between the equipment supplied on each order, or a 
different contractor, or not.  The Signal Corps did a little of that but more often 
than not didn't.  Best example I think is LM followed by TCS followed by 
several of the shipboard transmitters.

In a message dated 6/22/2006 2:37:30 PM Central Daylight Time, 
gl4d21a at juno.com writes: 
> "What, if any, changes were made to warrant a new model? There really
> isn't a lot to one of these. Nothing jumps out at me other than
> perhaps tube compliment or frequency coverage? Looks identical to my
> Bendix DU-1 beyond the color of the base mounting plate. The one I
> have is black wrinkle, this one looks like bare aluminum or possibly
> just dirty. Beyond that, ?
> 
> ~ Todd,  KA1KAQ"
> 
> Todd:
> 
> I have no idea if this is applicable here, but a while back I had 
> occasion to go through some old Navy DF systems model numbers, and 
> different designations were assigned for different installations, 
> where some significant mounting or support hardware change was made.  
> Electronically, they were identical, but there were different 
> mechanical components, which made them non-interchangable at the 
> system level.  Many components/sub-assemblies were the same, but not 
> everything.  
> 

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