[HomeBrew] Direct Conversion RX

R. Blackman richard.blackman at sympatico.ca
Thu Oct 1 19:35:25 EDT 2009


Hello to group:

If you would like a chuckle, check out my YouTube video of my direct 
conversion project.
http://www.youtube.com/watch?v=go6NbBu8CIE

Recipe:
Take one old  DDS PIC controller,  add an AD9851 DDS, W1FB's QRP notebook 
NE602 mixer /receiver page 78.
Discard the BFO section in lieu of the AD9851. Add  a G5RV and some 9 volt 
batteries.  "VOILA"

The bad:  The sensitivity is so weak, only the very strongest stations are 
heard.
The good: the sensitivity is so weak that there is no AM broadcast 
breakthrough....
Enjoy.

Richard VA3NDO 



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