[time-nuts] fast switching quiet synthesizer

[Hal Murray]

bruce at ko4bb.com said:
> Kratos   (www.kratosepd.com) do fast switching synthesiser subsystems that
> can be locked to a reference.. 

What does "fast switching" mean in the context of a DDS?

What does the spectrum of a DDS look like if I switch back and forth between 
2 frequencies at 1 KHz?  Or what question should I be asking?

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