Sorry Ralph, I did not read the header.....
&3 Rein W6SZ -----Original Message----- >From: Ralph Mowery <ku...@yahoo.com> >Sent: Mar 10, 2010 12:25 AM >To: digitalradio@yahoogroups.com >Subject: Re: [digitalradio] Re: Question for experts > > > > > >----- Original Message ---- >From: "rein...@ix.netcom.com" <rein...@ix.netcom.com> >To: digitalradio@yahoogroups.com >Sent: Tue, March 9, 2010 5:11:30 PM >Subject: Re: [digitalradio] Re: Question for experts > >Hello Jose, > > >Multiple Frequency Shift Keying, OK, but you really >did not answer my question, I think. > >Suppose I replaced the modulation device with a filtered >piano ( no harmonics ) a microphone. >I am serious, trying to find out the question we can't address >here any longer. > >I used a x-tal oscillator. > >Limited my BW to some 300 Hz > > > >73 Rein W6SZ > >- >If you are doing what I think, you have just built a complicated CW >transmitter. Start with a crystal oscillator, go to a ballanced modulator >and then filter out one sideband. >This is similar to how cw is often generated in a SSB transceiver. > > > > > > >------------------------------------ > >Try Hamspots, PSKreporter, and K3UK Sked Page >http://www.obriensweb.com/skedpskr4.html >Suggesting calling frequencies: Modes <500Hz 3583,7073,14073,18103, >21073,24923, 28123 . Wider modes e.g. Olivia 32/1000, ROS16, ALE: 14109.7088. >Yahoo! Groups Links > > >
