Figure 2-8. Balanced Modulator and A LC Circuit , Schematic Diagram.

TM 11 5820-509-35

Figure 2-8. Balanced Modulator and A LC Circuit , Schematic Diagram.

to greatly attenuate the opposite sideband and the 500-

b. The double-sideband signal from alc amplifier

kHz standard signal. Further amplification of this lower-

Q1 is further amplified by the common base circuit of if.

sideband signal is obtained in if. amplifiers Q3 and Q4.

amplifier Q2 and then applied to the mechanical filter.

Bandpass filter FL1 is adjusted to pass only the lower-

sideband output of Q2 and

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