For anyone intested in an in-depth comparison of DSP Blaster and DSP-10 by EME contester W3SZ read: http://www.elecraft.com/TechNotes/w3sz_dsp/w3szdspnew.htm Bottom line: "By the end of the night I had essentially put the DSP-10 away and was running with just the K2 / Transverter / DSP Blaster combination, and very happy." 73, Bill W4ZV