Jim Cicirello wrote: >Seasons greetings to all: > >Am I correct when I think that the HIGH SOUNDING AUDIO from the Disc. >needs De-Emphasis before it is fed into the transmitter to get rid of >the background noises and high sounding audio especially on weaker >signals? >
My suggestion is to read these articles to properly understand Pre-De-emphasis: http://www.repeater-builder.com/rbtip/pdemph-post.html The emphasis stages in a repeater can be eliminated, but this is a fairly complex concept to employ correctly. To read more on this idea, go to: http://www.repeater-builder.com/rbtip/flataudio.html >If I have this right I would need to feed the Disc. in series with a >a resistor then take a capicator to ground before the transmitter. >Again if I am right what would you suggest for the starting values of >the resistor and capicators, or what has worked pretty good as a >standard circuit if there is such a thing. >I have also found a circuit using a LM350 to make a DeEmphasis >Circuit. What might this circuit do that the proper Resistor and >Capicator Combination would not do? > My suggestion for properly de-emphasizing repeater audio is to use this circuit: http://www.n1uec.org/n1uec/deemphasis.html Kevin Custer Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ 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/
