Hi, I can confirm this behavior. I have never noticed this because as an SSB operator I always use a low cut of either 200, 300 or 400. I generally leave low cut at 300Hz and use high cut as a QRM fighting tool. Since most CW operators use the SHIFT/WIDTH mode, that is probably is another reason why this has gone undetected.
BTW the graphic passband representation is also pretty screwed up when changing back and forth between shift/width and hicut/locut modes. In particular, changing the hi cut often moves the left edge of the graphics when switching between the modes. I can provided a detailed scenario if it helps. Joe Planisky wrote: > > Up until recently, I had only used the SHIFT/WIDTH functions for > setting the DSP filter parameters. This morning I decided to try the > LO CUT/HI CUT functions. I really don't understand the behavior I'm > seeing and I suspect there's something wrong. > > I'm using FW 2.67 and DSP 1.96. I have the FM filter in FL1, and the > 2.7KHz filter in FL2. No other filters currently installed. Both the > FM and 2.7K filters are enabled for SSB and CW Rx. > > I'll start with SSB mode. > > I expected the LO and HI values to be independently adjustable with > the only limitation that the HI value must be higher than the LO > value. However, I find that for HI values greater than 2.70, the > maximum LO value I can dial in is lower, Hz for Hz. In other words, > the LO and HI limits track in opposite directions when the HI value is > > 2.70. Example: > > HI value Max LO value > 2.70 2.50 > 2.80 2.40 > 2.90 2.30 > 3.00 2.20 > 3.10 2.10 > ... ... > 4.10 1.10 > > <snip> > ----- AB2TC - Knut -- View this message in context: http://n2.nabble.com/K3---LO-CUT-HI-CUT-bugs-tp1581668p1582883.html Sent from the Elecraft mailing list archive at Nabble.com. _______________________________________________ Elecraft mailing list Post to: [email protected] 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
