[Collins] wider audio for 51J4?

[C E]

I think the 51 J family seems to suffer from
unreasonably tight audio. Can anyone else confirm?
Cal, N6KYR/8

--- Eugene Hertz <ehertz at tcaf.org> wrote:

> Hello all,
> 
> In a discussion with a friend, we were talking about
> the narrow 6kc filter of the 51J4 and we were
> wondering can this be replaced with some simple rc
> filter (or otherwise) for better AM audio bandwidth?
>  Can 12kc be attained? Whats the most (at the
> sacrifice of selectivity)?
> 
> Anyone have (or can point me to) a circuit diagram
> for a nice wide output?
> 
> thanks!
> Eugene
> PS Someone out there in collins land must have some
> bad J4 filters,no?
> 
> 
>
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