RCA RDR3600V, Service Manual

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Circuit Description
一、 、 Frequencies constitute
The receiver uses secondary frequency conversion. The first IF is 49.95 MHz and the second IF is
450 kHz. The first local oscillation signal is provided by the PLL circuit.
The PLL circuit generates the required transmit frequency
as picture 1 Frequency structure
二、 、 Receiving department
Frequency structure of receiving department as picture 2