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Page Title: Figure 2-16. Transmitter frequency mixer stage 1A9, schematic diagram.
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TM 11-5820-695-35
Figure 2-16. Transmitter frequency mixer stage 1A9, schematic diagram.
b.
Crystal mixer 1A9A1 uses varactor diode
resonant circuit L1, and C1, C6. This circuit is tuned to
the 15) MHz if frequency and is used to tune out the
OR1 to provide frequency conversion (due to the
varactor capacity at the if frequency. Isolation of rf from
nonlinear  capacitance-voltage  relationship  of  the
varactor diode).  ,Resistors Re and R3 provide bias
the if cir-
return for CR1. The 1,50 MHz fm signal is applied to
jack J1 and is coupled to the mixer cavity through
2 -75


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