[hpsdr] Cyclops 1st LO VCO

Kjell Karlsen la2ni at online.no
Wed May 7 06:54:09 PDT 2008


Hello all:

Why not use a DDS (AD9912 overclocked to 1200 MHz) to generate the range  
up to 500 MHz and a mixer to convert to 1-1.5 and 1.5-2 GHz? This gives a  
more complex solution but also a much better one. The AD9912 has  
extremely  good spur. perf. and seems to take 1.2 GHz overclocking. MCL  
delivers LP and HP filters to clean up in the mixing process.

73, de LA2NI, Kjell






 1210168449.0


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