[Milsurplus] Navy RAS Receiver - Better Audio Fidelity?

[mstangelo at comcast.net]

Is the bandwidth limit only in the IF filters or are there also filters in the AF stage?

Where can we find a schematic of the RAS receiver?

Mike N2MS

> On 10/14/2023 11:27 AM EDT David Stinson <arc5 at ix.netcom.com> wrote:
> 
>  
> Those who have worked on National RAS receivers:
> As you probably know, the RAS was designed as a CW
> receiver.  The RAS audio bandwidth drops off markedly
> above about 800 Cycles.  Not good for AM or BCB monitoring.
> 
> Has anyone here found a non-destructive way to improve this?
> The IFs are themselves narrow at 175 KC, so have thought of
> placing resistors across those transformers to broaden them
> somewhat.  Anyone worked this issue?
> 
> TNX OM DE Dave AB5S