[Elecraft] [K3] LPF DSP modification

[Edward Dickinson, III]

Per Elecraft's info, I have a pre-Rev. C DSP board (#1030).  Were there
pre-Rev. B DSP boards issued from Elecraft?  Other than schematics, is there
documentation available of the changes from Rev. B DSP to Rev. C DSP?

73, 
Dick - KA5KKT
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Yes, you can find them by comparing the January 2010 schematics 
to previous schematics.  The changes are similar to the W9AC mods 
but they involve scaling resistors instead of capacitors. 

73, 

   ... Joe, W4TV