Wayne It seems odd to have to purchase an expensive filter to obtain a wider bandwidth doesn't it? Isn't there some way to just bypass the filter and rely on DSP? I still would appreciate more bandwidth for CW. 2.7khz is far too narrow for comfortable monitoring while working around the shack. I know it takes some programing but from a layman's point of view, it seems like a simple request and it would certainly improve the product. 73 Steve Ellington [email protected] ----- Original Message ----- From: "wayne burdick" <[email protected]> To: "Gerard Jendraszkiewicz" <[email protected]> Cc: <[email protected]> Sent: Thursday, March 26, 2009 2:39 PM Subject: Re: [Elecraft] Width of AM filter
> Jerry, > > The WIDTH control sets the final audio bandwidth, which is limited to 5 > kHz in AM mode. But in AM mode, the crystal filter bandwidth needed is > 2x the audio bandwidth, or 10 kHz in this case, because it has to pass > both sidebands. To obtain this full bandwidth, you'd have to have the > 13 kHz FM filter installed. The AM filter is only 6 kHz wide (an > industry standard), and if that's the widest filter you have, you're > actually getting only a little over 3 kHz of audio bandwidth even if > you set the WIDTH control to max (5 kHz). > > 73, > Wayne > N6KR > > On Mar 26, 2009, at 11:23 AM, Gerard Jendraszkiewicz wrote: > >> Hello, >> >> I have K3 with KFLA-6K. I can only adjust the width to 5.0 using the >> width knob on the K3. I use AM to listen to the AM BCB and some SW. I >> remember getting a wider width in the past ?? Any suggestions ? >> >> Thanks >> Jerry, KE9I >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[email protected] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> >> > > --- > > http://www.elecraft.com > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html -------------------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.0.238 / Virus Database: 270.11.29/2024 - Release Date: 03/26/09 07:12:00 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
