My K3 defaults to FL3 which is the stock 2.7/5 filter. There is a 400 Hz filter in FL2 but when it's selected, the phase distortion kicks in just a little. You have to under the concept of the Butterfly filter. Both mark and space filters are coherent filters and phase distortion in the roofing filters can effect the butterfly if it's too narrow. FL3 (2.7/5) is selected but as I dial down the width control, the DSP narrows the 15KHz IF. The DSP filter isn't a problem when AFSK is selected. It's the dual filter that's the problem.
----- Jack WA9FVP Willco Electronics -- View this message in context: http://elecraft.365791.n2.nabble.com/RTTY-FILter-tp6756724p6757194.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ 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
