Roger, Ron. I just hadn't seen any information that would indicate how wide the DSP filters would go if one had a roofing filter wider than 6 KHz. I've used only one sideband when there was interference on one side of the other of an AM signal, but always used the 746Pro's synchronous AM when possible. That's one thing it did well. So I'm hoping that the firmware will develop to allow better than 3 KHz real AM if one has the roof for it. And surely it will, the way the guys are going. Better and better every week. By the time my K3 arrives there'll be nothing left to whine about.
On Jan 12, 2008 1:18 PM, Ron D'Eau Claire <[EMAIL PROTECTED]> wrote: > Hello Dave: > > The errata with the list of features is the one you should have received > with the Owner's manual. The current one on the Elecraft web site is C1-1 > dated Nov 18. > > http://www.elecraft.com/manual/K3%20owner's%20man%20errata%20C1-1.pdf > > It sounds like you were looking at the errata sheet for the Kit assembly > manual. > > I have a 6 kHz filter as well, and for best audio fidelity I use a SSB mode > to listen to broadcast AM. The excellent stability and high tuning accuracy > of the K3 means I just punch in the frequency I want and even music is > within one or two Hz of the right frequency - much too close for me to hear > any tone error. > > As Lyle noted, the I.F. bandwidth of an AM signal is *twice* the audio > bandwidth since there are two sidebands that must fit through the 6 kHz > filter bandpass on an AM signal. I find that's FB on Ham AM signals, but > those commercial AM stations who make full use of their 5 kHz audio > bandwidth are cut off at about 3 kHz in AM mode. Gong to SSB mode with the 6 > KHz filter allows the full audio bandwidth through. > > Ron AC7AC > _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
