Yes, I would regard a 2.5 msec rise time (using appropriate sigmoid shaping) to probably be ideal, in which case I would have no desire to modify or shorten it. I'll bet it will sound even better than a Drake or a Ten-Tec!
I hereby withdraw my previous request/opinion. Rick N6IET On Mon, Jun 8, 2020 at 10:27 AM David Gilbert <ab7e...@gmail.com> wrote: > You don't need to generate clicks to have a crisp CW tone. Elecraft uses > a pretty much optimally shaped waveform (some version of a cosine function) > and if I remember correctly the rise time is only about 2.5 msec, although > I could be wrong about that last part. And while you may be careful not to > use short rise/fall times when the band is active, in the past there have > been folks on the contesting reflector who openly admitted they purposely > generate clicks by shortening the rise/fall times to give themselves elbow > room. I will always appreciate that Elecraft doesn't give those miscreants > the means to pollute the band. > > 73, > Dave AB7E > > On Mon, Jun 8, 2020 at 9:23 AM Richard Stutsman <rast...@gmail.com> wrote: > >> I for one would like to have some control over the rise/fall times. >> >> You want the cleanest (narrowest) of CW signals when operating on a >> crowded >> band or in a contest - unless you're a rare DX station. Most of my >> operations are 22wpm rag chews on very uncrowded bands. We're often the >> only discernible signals on an entire CW band. And conditions are often >> noisy with deep QSB. Why not allow those of us operating in those >> circumstances to shorten the rise times a bit, which makes it easier to >> copy in noisy conditions, when any close-in clicks or thumps aren't going >> to bother anybody? Copying a 'soft' weak CW signal is like trying to read >> a >> 'crisp' signal that's an entire S-unit weaker, IMO. >> >> My TS-590sg let's me do that, and I love it! >> >> Will the K4 sound as good as a Drake T4C? (Just askin'.) >> >> Rick N6IET >> >> > N4ZR wrote: >> > > >> > > Will the K4 have options for setting CW rise and fall times...? >> > Hi Pete, >> > Probably not. We've always been very careful to ensure our rigs have an >> > exceptional clean, click-free CW signal. (Third-party testing bears this >> > out.) Minimizing the bandwidth requires a very specific rise/fall time >> and >> > a hand-crafted sigmoidal shaping function in DSP. >> > Colonel Sanders closely guards his fried chick recipe, Mrs. Fields won't >> > reveal what's in her chocolate-chip cookies, and only selected firmware >> > monks--sworn to secrecy--are privy to Elecraft's keying envelope >> > coefficients :) >> > 73, >> > Wayne >> > N6KR >> ______________________________________________________________ >> 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 >> Message delivered to ab7e...@gmail.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 Message delivered to arch...@mail-archive.com
