Nope, sorry it was me that wasn't clear. I did indeed mean audio bandwidth.
Look at any AM station with your P3 -- it will be easy to measure the bandwidth. I rarely if ever see anything less than 7 kHz (14 kHz total BW) for an HD station, higher for all-analog stations. Al W6LX >________________________________ > From: Ron D'Eau Claire <r...@cobi.biz> >To: 'Al Lorona' <alor...@sbcglobal.net>; elecraft@mailman.qth.net >Sent: Wednesday, August 7, 2013 8:07 PM >Subject: Re: [Elecraft] [K3] Hearing aids, meet K3 > > >Right Al, it takes 10 kHz of RF bandwidth with A.M. to produce 5 kHz of >audio bandwidth after demodulation. > >I thought my comment was clear in context. The thread was about the >desired/necessary audio bandwidth. My apologies for the confusion. I should >have said "audio bandwidth". > >73, Ron AC7AC > >-----Original Message----- >From: elecraft-boun...@mailman.qth.net >[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Al Lorona >Sent: Wednesday, August 07, 2013 5:48 PM >To: elecraft@mailman.qth.net >Subject: Re: [Elecraft] [K3] Hearing aids, meet K3 > >That is the common misconception. Actually most AM stations go out to at >least 10 and often 12 kHz (look on your P3). The exceptions are the stations >transmitting an HD signal -- they are necessarily band-limited to 7 kHz. I >boycott HD stations for that reason. I can tell the difference on a good >wideband receiver. > >I know this because I went through it in the pre-HD days with my senior >advisor who had the common misconception. Even after I proved him wrong (by >actually telephoning the chief engineers of KFI and KNX) he still gave me a >'D' on my senior project. Sour grapes. > >Al W6LX > > >A recent report in "Radio World" notes that most analog A.M. broadcast >>receivers today have a bandwidth of less than 5 kHz. >> >> >> >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft@mailman.qth.net > >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:Elecraft@mailman.qth.net > >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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
