The 5 kHz dsp bandwidth comes into play when one uses AM synchronous detection (AM then ALT) where the "shift" is either carrier plus upper sideband (USB is on in display) or carrier plus lower sideband (LSB). It actually sounds like 5 kHz bandwidth. What I use all the time listening to BC up above 40m.
73, Guy. On Mon, Mar 22, 2010 at 2:54 PM, Joe Subich, W4TV <[email protected]> wrote: > >> My main question is is it normal for the BW to max out at 5.0? > > Yes. The K3 "width" display represents the audio bandwidth. > In AM the RF bandwidth is twice the audio bandwidth. Note > however, that the bandwidth display is somewhat confusing > in that it represents the larger of 2 * (Fh-Fc) or 2 * (Fc-Fl) > where Fc = center, Fh = Hi cut, and Fl = Low cut. Further the > maximum Fh (high cut) frequency is 4200 Hz in AM, LSB, USB and > 2400 Hz in CW. > > 73, > > ... Joe, W4TV > > >> -----Original Message----- >> From: [email protected] >> [mailto:[email protected]] On Behalf Of Rick Prather >> Sent: Monday, March 22, 2010 12:41 PM >> To: [email protected] >> Cc: Elecraft Elecraft >> Subject: Re: [Elecraft] [K3] AM Bandwidth >> >> >> "Nor" is 3 khz and 1.5 kHz center. >> >> My main question is is it normal for the BW to max out at 5.0? >> >> Probably doesn't matter since there is no audible difference >> as you advance wider than 3.2 anyway. >> >> Thanks, >> >> Rick >> K6LE >> >> On 3/22/2010, at 9:11 , Matt Zilmer wrote: >> >> > If you press and hold the SHIFT control (see NORM on VFO >> A), it will >> > reset the Fc and BW to what's normal for that mode. >> > >> > matt W6NIA >> > K3 #24 >> > >> > On Mon, 22 Mar 2010 08:57:18 -0700, you wrote: >> > >> >> After installing the 6.0 kHz AM filter I notice the Max DSP b/w is >> >> 5.0 and the Shift center is 1.5 kHz. >> >> >> >> Is this the normal set up? >> >> >> >> TIA, >> >> >> >> Rick >> >> K6LE >> >> # 3727 >> ______________________________________________________________ >> >> 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 >> >> ______________________________________________________________ >> 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 > > ______________________________________________________________ > 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 > ______________________________________________________________ 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
