Page 195 - Build Your Own Transistor Radios a Hobbyists Guide to High-Performance and Low-Powered Radio Circuits
P. 195

•  R4: 470


            •  RS:  22


            • R6, R12, R13, R16:  100


            •  R7: 3,300


            • RS, R10:  1 k


             1%
            •  R9, R11:  100 k


             1%

            •  R14:  1 M



            •  R1S:  330


            • T1:  10.7-MHz IF transformer 42IF129
            • Yl crystal: 28.636 or 28.322 MHz fundamental frequency crystal
            • U1: 74HC4066
            • U2, U3: NESS32 or LM833

            • U4: 74AC04
            • US: 78L05 or 7805
            • U6, U7: 74AC74
            • US: 74AC08

            • Ql: MPHS10
            •  Q2: 2N3906
            Figures  12-11A and  12-11B present schematic diagrams of the front-end  circuit for
            receiving  40-meter RF  signals.  Note that this  circuit  can  operate  from  a  regulated
            9-volt to 12-volt  DC supply or a battery.
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