[hpsdr] Power supply

[f6bki at orange.fr]

Hello All,  just received my TAPR modules : Mercury,Alex filters, ,Metis, Pennylane, Excalibur,  now looking at a power supply .
on the Atlas doc it looks like I need +12v,-12v,+5v,-5v,3.3v , looking at the HPSDR LPU doc it is mentionned that that 3.3v is not needed for most cards ???
Is there a document adressing the needed DC voltage by module ?  
Thank you
73
Jacques F6BKI
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