You're not alone -- this is a common tough decision. I went through this exercise, trying both the KAF2 and the KDSP2, including side by side comparisons between them. Sounds like you already found your answer, but if there's any remaining uncertainty I'll be glad to go into detail offline (will have to dig up some old emails on this).
In short, I found that: The differences in performance are small. The differences in sound quality are medium. The differences in user interface and complexity are big. The KDSP2 is a highly tweakable/configurable option. I think that for a CW-only op, the KAF2 is the way to go, and that for an op that also does SSB, data, DX and contesting, the KDSP2 is the way to go. NOTE: Be sure to re-adjust your KAF2 if you change your K2's sidetone frequency. After owning both, I found the KAF2 much more compatible with my needs (I prefer simplicity and CW only). I would not recommend basing your decision solely on performance around the reception of a signal (as in ide by side comparison). I think the differences are just too small. Think more about your operating philosophy and your needs (modes operated). Also, if you plan to exploit the KDSP2's expandability by writing custom DSP code, be prepared to invest a fair amount of time and effort (and some dev tools). I was eager to go that route but ended up deciding against it. I think Elecraft ended up doing most of that good work for us. Definitely would be a fun exercise and learning experience, but be prepared to invest some effort. 73, --Andrew, NV1B On Wed, Jul 13, 2011 at 9:15 AM, R Thompson <ve...@xplornet.com> wrote: > Thanks for all the replies, > > that settles it for me, as I haven't enjoyed my own experiences > with DSP, I'll order the KAF2. And I'll consider the anti-ringing > modification. > > Ron VE8RT > > On Wed, 2011-07-13 at 03:32 -0700, Bill W4ZV wrote: > > R Thompson wrote: > > > > > > I would like to hear from someone who has the filter, what their > > > impressions are. I'm not overly impressed with the DSP as I've > > > experienced it on my IC-703, but it can make a difference even if it no > > > longer sounds natural. So I'm leaning towards getting the filter. > > > > > > > I have the KAF2 but to be honest I seldom use it. For some reason I've > > never found audio filters to be of much help. My experience goes back to > > the Autek QF-1A, SCAT filters, many different outboard DSP filters, etc. > > I'm sure they work well for others but I've never found them to work for > my > > ears which seem to prefer wider audio (~350 Hz) before reaching my > > ear/brain's DSP stage. One exception is the K3's APF which is > occasionally > > helpful under certain conditions. > > > > Here's some more information on the KAF2 which might help you decide. I > > used KI6WX's standard AF1 and "low-ringing" AF2 values in my unit: > > > > http://home.pacbell.net/johngreb/kaf2_filter_modifications.pdf > > > > 73, Bill > > > > > > > > > > > > -- > > View this message in context: > http://elecraft.365791.n2.nabble.com/K2-question-on-options-tp6577413p6578509.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: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
