Hi Cecil, I totally agree with you and have a few questions.
> > Huff&Puff encompasses a lot of circuit variations, I like to use the > more advanced forms that look at more than one bit of variation. The > simpler versions have the problem that the circuit is never happy and > keeps toggling back and forth not happy with either choice of frequency. > > The version I like is basically a PLL circuit but the phase > comparator locks to any multiple of the reference frequency not at an > exact one and only one frequency. The phase comparator is the only > difference between it and a PLL. It tends to be smooth like a PLL in > that it's not hunting for the frequency all the time like the one bit H&P do. > Do you have any link - or references - to such H&P oscillators? > As far as the transformer my plan was to put it on the output of the > audio amplifiers for the purpose of totally isolating the radio from > the sound card. I have not seen any clear explanation what it will do > for you by putting it between the QSD switches and the input to the > audio amplifiers that can't be achieved by changing the output > windings of the transformer that feeds the QSD switches. > That is also my idea. Which impedance would you use for these as there are several models? Jean-Claude PJ2BVU ------------------------ Yahoo! Groups Sponsor --------------------~--> Everything you need is one click away. Make Yahoo! your home page now. http://us.click.yahoo.com/AHchtC/4FxNAA/yQLSAA/ELTolB/TM --------------------------------------------------------------------~-> Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/soft_radio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
