Jim W4ENE wrote: > It is the sudden cutoff that the ear dislikes. > > I point out the my old 51J4 sound pretty nice if > the mechanical filter is kicked out. Why? Not > only because of the increased bandwidth of the > I.F. but rather because the shape of the top of > that filtering system is so rounded. The cutoff of > the audio frequencies is quite gentle. Not all > that wide, but the descent into the stopband is > pretty gentle. >
Very true. My R390 sounds so much better that my R390A when receiving a good-quality AM signal at any given position of the bandwidth switch appropriate for AM reception, and I've always attributed it to this. 73, -Larry/NE1S -- Pay a visit to my amateur radio web page at: ne1s.rfburn.org ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/[email protected]/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: [email protected] To unsubscribe, send an email to [email protected] with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
