| http://www.w3.org/ns/prov#value | - Desirably, the same local-oscillator signal used by upconverter 68 passes to a synthesizer (not shown) configured to multiply the local-oscillator frequency by four and divide the resulting product by an odd number, characterized as 2N???1, where N is a positive integer chosen to satisfy the Nyquist criteria for the bandwidth being downconverted, and is usually greater than or equal to ten.
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