[R-390] [Milsurplus] history and evolution of the Collins gear

[Raymond Cote]

Right, there is a Collins group. i will post over there if I can find it
thanks
> There is a Collins Collectors Group or Site. The'd likely know.
> 

> >
> > The mil list has been talkin lately about the R388 and 51J3 equipment.
> > This brings to mind the thought of the evolution of these great receivers.
> >   When was the first design, what was the first one?  51j1???   Was there
> > units before the J series?  What are the capabilities of the various
> > lineage?  from the 51H, 51J, 51S R388, R389, R390 390A 391 and so forth?
> > Does anyone have all this in writing or does it have to be compiled,
> > perhaps on these lists?
> >
>