CW is a "tone" and its not illegal to transmit... So long as you're within your licenses limits and in band.
~Brett (KC7OTG) On Fri, 2008-08-15 at 07:59 -0500, Jim Miller wrote: > I didn't think is was LEGAL to transmit music, "tones" or even whistle for > that matter. > > 73, de Jim KG0KP > > ----- Original Message ----- > From: "O. Johns" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Thursday, August 14, 2008 6:41 PM > Subject: [Elecraft] K3: Voice pitch adjustment on SSB > > > > Folks, > > > > I read the web pages about ESSB, after seeing on the reflector that > > the K3 now supports it. It struck me that even ESSB doesn't solve one > > big issue with voice transmission: PITCH. Tuning the SSB receiver > > changes the overall pitch of the received voice. Unless you have met > > the sending ham or at least talked to him/her on the phone (or on > > AM!!), you have no real idea how high- or low-pitched the voice really > > is. One can only guess, and get a sort of feel for what a reasonable > > tuning is. > > > > One way to solve this may seem a joke, but it isn't. Everyone should > > buy a little 440 Hz pitch pipe, the kind used to tune musical > > instruments. Then, say, the net control could blow his pitch pipe at > > the start of the net and all the listeners could blow their little > > pitch pipes while listening to net control. They would all then > > adjust their receiver tunings until the pitches matched. Like a > > shortwave orchestra tuning up. (Of course, this might violate the FCC > > rule against music on ham radio, but maybe not if the pitch pipe was > > near a pure sine wave. Then the signal transmitted by net control > > would be just an ordinary CW signal, but at 440 Hz from the net > > control's suppressed carrier.) > > > > A refinement would be to build a pure 440 Hz tone generator into the > > microphone preamps of radios. Net control pushes a button while > > transmitting and it goes out over the air. The net members push > > another button while receiving to produce a 440 Hz tone in their > > speakers along with the received signal from net control. Then the > > receiving operators adjust their receiver tuning until the pitches > > coincide. For the tone challenged among us, the receiver tuning could > > even be automated, much like the K3 already does for sidetone on CW. > > > > This scheme came to me when I was adjusting the audio parameters on my > > K2. I had the K2 running into a dummy load, and was listening to it > > on headphones plugged into a TenTec RX320D across the room. Since the > > K2 was on a dummy load, I tried whistling and was surprised and > > pleased to find that the PITCH of my whistle didn't match the one I > > was hearing on the phones. But I could adjust the RX320D tuning until > > they did match. Guarantee of zero beat and realistic pitch in voice > > reception. > > > > Doesn't seem that this would be too hard to do. Maybe the K3 could > > even do it in firmware? > > > > > > 73, > > > > Oliver Johns W6ODJ > > _______________________________________________ > > Elecraft mailing list > > Post to: [email protected] > > 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 > > > > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > 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 _______________________________________________ Elecraft mailing list Post to: [email protected] 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
