The ease of changing CW pitch in the K3 is indeed a great asset in setting things up for best copy, and I have found myself using it quite a few times. The immediate reason to change pitch has usually been a perception that with the existing setting, the best copy pitch does not exactly coincide with the CW tuning indicator (another great CW asset of the K3), or with the peak DSP filter response. Many times this has led me to change the pitch setting by a small amount, whether my general preference du jour is for a low or higher pitch. To make such an adjustment I like to set a wide DSP bandwidth and slowly tune through a received signal. The apparent loudness doesn't stay constant, nor does it follow a smooth variation that I attribute to my own hearing response. Instead I hear peaks within range of piches that would be reasonable for CW, that I attribute to the speaker and its surroundings. (I would say that since I went to the SP3, there is less of this variation, but no matter how good the speaker, there will always be such variations because objects around the speaker cause reflections. Phones will always be the better approach....) Rather than adjusting the pitch to some value considered ideal based no prior considerations, I set it for a peak in the accoustical response of the particular speaker and its surroundings. Then going back to normal DSP selectivity I generally find better agreement between perceived loudness and centering the received signal in the passband, at least until I move things around in the shack...
73, Erik K7TV ______________________________________________________________ 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 Message delivered to [email protected]
