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Re: What determines 'Tune' frequency


 

Dear AL,
I see your QRSS signal clearly on my 30M grabber this morning.? You just popped in.?? It still looks a little rough but improving.?? One note that I saw is the absence of a startup period of? your signal.? Most of us put one space in front of the Message call sign.? The reason you do this is to give a one character start line before the first character.? I still have not put my finger on what is causing the wobble in your signal.? What is the voltage and current capability of the power supply before your 5 Volt regulator??? What size is the filter capacitors on the input and output legs of the 5 Volt regulator??? It still looks to me to be your Oscillator getting a fluctuating +5VDC but can also be caused by the finals being starved for current causing the voltage to vary and make the +5 volt buss in the U3S to change value.?? This can also be caused by a poor solder connection somewhere along the 5 volt DC buss on the U3S Circuit board.??? But you are there on my grabber and It is readable.??? So Hang in there.? Merry Christmas from New Mexico.
73 Dave WA5DJJ

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