Panasonic KX-TC2101BXB Service Manual page 37

KX-TC2101BXB
14.6.3. RF signal operation/control and PLL operation (RF UNIT)
Base unit radio frequency signal received by antenna passes through duplexer (DPX401).
RF signal is amplified by RF AMP. RF signal received from RF IC is mixed with RX local frequency at Mixer to generate
10.695 MHz wide band IF. The reference frequency is generated by X801 10.240 MHz crystal.
The 10.695 MHz is mixed with reference and 455 KHz narrow band IF is generated.
RF IC is controlled by CPU (RF EN, RF DATA, RF CLOCK). The RX local frequency is generated by RX VCO.
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