[hpsdr] Disabling 10 MHz clock on Penelope

Bruce Beford bruce.beford at myfairpoint.net
Mon Dec 21 15:36:23 PST 2009


Jeff Cook wrote:
> Bruce, when you refer to the 5 V line feeding U2, the 10 MHz oscillator, 
> do you mean 3.3 V, and is the very short trace about 2 mm that runs 
> vertically down from the top right-hand corner connection of U2 the 
> correct one to cut?  I just want to make sure before I wield the axe.

Yes, Jeff. 
This is the correct power trace to cut. I then soldered a small two pin
header across the gap, to allow re-powering the oscillator later, if
desired. Sorry, I mis-spoke when I said this was a 5V line. The oscillator
does run on 3.3v. 

GL es 73,
Bruce N1RX



 1261438583.0


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