1973VCF Modified 1v/oct
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RefDesValueNotesQuantityFunction
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C1, C11, C12, C13, C14, C15, C16, C17, C19100n2.54mm Ceramic9Modifications
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C2, C3100p2.54mm Ceramic2
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C4, C7, C8, C947p2.54mm Ceramic NP0/C0G4Trace to cut
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C5, C6220pPolestyrene, NP0/C0G, Film (or whatever sounds nicest!)2
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C10, C1810uElectrolytic 2mm pitch, at least 35v2
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D1, D21N5819Or 1N5817, 1N58182
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Panel PCB4 pin header2.54mm2
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Core PCB4 pin socket2.54mm2
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Panel PCB3 pin header2.54mm1
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Core PCB3 pin socket2.54mm1
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Core PCBEuro 10 Pin Power 2.54mm1
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CV, V/Oct, In, HP, BP, LPThonk Jack6
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L1, L2Ferrite Beador 10R2
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P1, P2100k LinAlpha 9mm Pot Vertical2CV Level, Freq
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P350k LogAlpha 9mm Pot Vertical1Res
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P4100k LogAlpha 9mm Pot Vertical1Input
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Q1, Q2, Q3, Q5BC560or BC559 - I used BC559B4
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Q4, Q6J201Other FET's work. Have tried 2N5457 and 2SK30A - but watch the pinout.2
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R150k Trimmer3296X1Freq Trim - Right Angle
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R2Do not fit0
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R3, R211M2
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R4, R7330k2
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R19, R20, R3422k3
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R64k71
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R818k1
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R9, R11, R1233k3
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R13100k Trimmer3296X1V/Oct Trim - Right Angle
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R5, R10, R22, R28, R54, R55, R56100k7
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R14 953kor 22M in parallel with a 1M1
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R15, R16, R26, R32, R3668k5
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R33220k1
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R17, R18470k2
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R2315k1
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R24, R2522M2
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R2710M1
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R2939k1
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R30, R313k32
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R35, R40, R44, R51, R52, R53330R6
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R37, R38, R41, R42470R4
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R39, R432k22
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R45, R47, R4912k3
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R46, R48, R5033k3
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U1LM3900NLM3900N1
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U2, U4NE5532Or TL072CN or other dual opamp2
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U3LM13700LM137001
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