[Milsurplus] Navy RAS Receiver - Better Audio Fidelity?

[David Stinson]

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

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