[time-nuts] SMD TADD-1 distribution amplifier - seeking comments and suggestions?

John Miles john at miles.io
Thu Dec 17 16:47:38 EST 2015


Those spurs are reminiscent of what happens when you lift the ground of a coax cable at one end and turn it into an antenna, in my experience.  It is almost always a bad idea to do this.  Try shorting out the capacitor(s) at your input and output jacks. 

-- john, KE5FX
Miles Design LLC
 
> My 'ultra-low-noise DC-supply' in the form of a lead-acid battery improves
> things somewhat, but some spurs still remain:
> http://www.anderswallin.net/wp-content/uploads/2015/12/2015-12-
> 17_fda_spurs_and_comments.png
> interpretations and explanations are welcome!
> The board was not enclosed in a metal can for these tests.
> 




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