Parasite noise (2)
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Hello,
As previously said I have a noise in the audio (Tic tac style) at each SDA pulse.
I did a lot of testing and I came to the conclusion, that in fact there must be some interference (Style resynchronization of clock0) that creates a very weak but audible signal after amplification.?This signal lasts 75?s. I found similar elements in this post. (See response from Jerry) Re: How to connect ubitx microphone jack to soundcard output; now unsuppressed carrier in SSB or digital modes. (groups.io) I also wonder if simply passing C50 to 220 or 470?f instead of 1? would solve this problem. I would do a test this afternoon Jerry, you¡¯re also talking about changing the winding. Other solutions? cdt ?
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Gerard