Parts List for W3KKC Squelch board - MS-25

U1 - SC6709 or M7716 (Motorola Squelch IC - optionally supplied)
U2 - 78L09
16 pin dip socket for U1

Q1 - 2N2222 
Q2 - 2N2222
Q3 - 2N2907


D1 - 1N4004
D2 - 1N4148
D3 - LED - Blue
D4 - LED - Green


R1 - 15 ohm
R2 - 27k
R3 - 180k
R4 - 10k
R5 - 10k
R6 - 1k
R7 - 1k
R8 - 100 ohm
R9 - 10k
R10 - 22k
R11 - 4.7k
R12 - 10k pot (refer to photos on the website for orientation of control on multi-turn versions)
R13 - 4.7k - mounts vertically
R14 - 4.7k - mounts vertically
R15 - 1k


C1 - .47 uF ceramic
C2 - .1 uF ceramic (can be a .12 uF) marked  "104" or "124"
C3 - 4.7 uF 50V electrolytic
C4 - .15 uF poly - white/rectangular
C5 - 750 pF SM 300V
C6 - 100 pF SM
C7 - .001 uF poly green marked "2A102J"
C8 - 100 pF SM
C9 - 470 pF SM
C10 - .01 uF poly marked  "103J"
C11 - 3.3 uF 50V electrolytic
C12 - 4.7 uF 50V electrolytic
C13 - .1 uF  ceramic (can be a .12 uF) marked  "104" or "124"
C14 - .22 uF ceramic
C15 - 2.2 uF 50V electrolytic
C16 - 22 uF 25V electrolytic


J1 - 6 Pin Molex male chassis connector 
Female Molex socket and 7 spring pins (1 extra)

W3KKC squelch printed circuit board - MS-25 (H25) (V25) (3/4)