SB-301 AM tuning

[Eddy Swynar]

Joe...

You'll have no such problem with the wider SB-310 'style AM filter, as
referenced by Gerald...

They're well worth the effort it takes to build, and/or the expense to buy a
used one...

~73~ Eddy VE3CUI - VE3XZ



-----Original Message-----
From: Gerald C. Lemay <wa1vwl at GROLEN.COM>
To: HEATH at LISTSERV.TEMPE.GOV <HEATH at LISTSERV.TEMPE.GOV>
Date: Thursday, June 08, 2000 8:37 PM
Subject: Re: SB-301 AM tuning


>I'm not sure if you really do have a problem but be aware that the AM
>filter on the SB series receivers is very sharp. In fact, too sharp for
>good AM reception. When you tune across an AM signal, it will sound very
>bassy and muddy until you tune off to one side a little bit. The SB-310
>had a much better filter. This topic was covered here before. someone
>had info on how to build one.
>
>Joseph Filice wrote:
>
>> Hi,
>>
>> When tuning AM signals with my SB-301 (the AM filter
>> is installed), if I tune to the center frequency of the
>> signal, the audio is somewhat distorted.  If I tune off
>> a kilocycle or so to either side, it sounds much cleaner.
>> Is this a known "feature" of the SB-301 in the AM mode,
>> or could I have a problem with the filter, detector or
>> something related?  Thanks.
>>
>> Joe Filice KQ6GL
>
>