Internal differences between 6400 & 6600?

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Looking at it from a 10,000 ft overview, what are the differences in circuit internals between the 6600 & 6400? Is it mostly software differences or does one have a different bill of materials? (Ie, more & better goodies). Thanks!
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Bill Garfield W1BG

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Posted 8 months ago

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KY6LA - Howard, Elmer

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6600 has two spectral capture units and can do 4 receiver slices
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Ria - N2RJ, Elmer

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They're based on a modular design. The contest grade preselectors plus the additional SCU in the 6600 are the main differences. They may have additional modules (MARS etc) to add on in the future.

Ria