George, N4YM asked: ...I understand the reason a lower pitch ST would be easier to copy when qrm is present, due to the percentage difference matter. My question concerns what pitch is easier to copy when receiving fast cw when no qrm is present. ... Also, it seems my K2 pitch volumn has a "hole" around 550 to 625, in that the level is not as loud in this range, when using the K2 internal spkr....Anyone else experience the "hole"?
----------------- What CW speeds are you thinking of George? My absolute maximum is about 40 wpm and that's head copy. I'm starting to work hard at 35wpm. 99% of my "QRQ" CW is around 30 wpm and 99% of my general QSOs are between 15 and 20 wpm. Those are very sedate speeds to real high speed (QRQ) operators. Over those ranges the tone makes no different to me as far as the ability to copy. I find the higher pitches (>600 Hz) tiring to listen to, so I usually go for the lower frequencies. My K2 is set up for 500 Hz. I almost always copy using phones. In the o-l-d days, especially in the Army, I'd sometimes have to copy audio tones approaching 1 kHz on a loudspeaker in the operating room. That was tough for me because the room echoed, and echo got worse as the pitch frequency went up. I assume you mean the sidetone pitch, not the volume, since maximum, ear-splitting, volume occurs at 255 (mine is set to 11, Hi!). I don't notice any unusual variation but level drops smoothly as the frequency goes up, thanks to my having installed the sidetone improvement mod that makes the non-sinusoidal tone a little less harsh. It's basically a low-pass filter so it attenuates the higher frequencies. Still, the drop seems smooth on the internal speaker. Ron AC7AC _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
