>So my questions are: (1) Is audio distortion on AM a known problem with the >K3? (2) What does the LCD BW actually read? Is it an IF BW, an audio BW, or >what, and does the displayed BW actually correspond to reality?
On my K3 I see and measure the following: 6 KHz AM filter AM mode Band width displayed as 3.00 KHz, Spectrum lab -10 dB audio band 100 Hz to 3100 Hz 6 KHz AM filter LSB mode Band width displayed as 4.00 KHz Spectrum lab -10 dB audio band 120 Hz to 3500 Hz -------------------------------------------------------- 13 KHz FM filter AM mode Bandwidth displayed as 5.00 KHz, Spectrum lab -10 dB audio band 100 Hz to 4200 Hz 13 KHz FM filter LSB mode Bandwidth displayed as 5.00 KHz Spectrum lab -10 dB audio band 120 Hz to 3600 Hz If I had a second 13 KHz filter in the sub receiver I would try linking VFOs and place one on upper sideband and the other on lower sideband (otherwise know as ISB mode). ---------------------------------------------------------- AM audio much more understandable (pleasant) on the FM filter, the extra 1 KHz helps. AM on the 6 KHz filter on LSB is okay and using LSB/USB is best possible reception of AM if you only have a 2.7 KHz filter. I will leave it up to you to decide what the LCD BW corresponds to. Mike Scott - AE6WA Tarzana, CA (DM04 / near LA) K3-100 #508/ KX1 #1311 ______________________________________________________________ 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
