[Collins] wider audio for 51J4?

Garey Barrell k4oah at mindspring.com
Tue Jun 13 22:48:19 EDT 2006


It's a  _communications_  receiver!!

73, Garey - K4OAH
Atlanta

Drake B & C-Line Service CDs
<http://www.k4oah.com>



C E wrote:
> 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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