Well, sidetone and the tone generated from offset is not transmitted...except into your head via the ear canal which has excess audio bandwidth when listening to CW.
Eric KE6US www.ke6us.com -----Original Message----- From: Nick Waterman [mailto:[EMAIL PROTECTED] Sent: Wednesday, January 04, 2006 3:10 PM To: Vic K2VCO Cc: EricJ; elecraft@mailman.qth.net Subject: Re: [Elecraft] Side Tone (Choosing the right "music") Vic K2VCO wrote: > Not harsh, but boring. But anyway, the reason a pure sine wave is > desirable is that it makes matching pitch with a received signal easier. Well, and bandwidth. A pure sine wave uses, errr, almost zero bandwidth*, whereas one with harmonics needs somewhere to put those. A 500Hz sine wave at 7100kHz is really a sine at 7100.5, whereas a 500Hz sine wave with harmonics at 1000 and 1500 kHz is now using 7100.5, 7101, 7101.5... .. or am I preaching to the choir here? * Yeah, yeah, ok, not quite true as soon as you start modulating it with keying envelopes. -- "Nosey" Nick Waterman, G7RZQ, k2 #5209. #include <stddisclaimer> [EMAIL PROTECTED] It is ten o'clock; do you know where your processes are? _______________________________________________ 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
