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K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5

K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 1

Introduction

This document will describe how to assemble and checkout a K42 Keyboard/Reader Kit. The assembly of the

K42 is not difficult, but probably not a good “first kit”. Before you start working on the kit you will need to gather

the following items

1) A low wattage (40W) soldering iron or pencil or temperature controller solder station.

2) Good grade of Rosin core solder, Please do not use ACID CORE Solder !!

3) A few pieces of hook up wire

4) Good pair of wire cutters, small pliers, assorted screwdrivers, and a 5/64” Allen wrench

5) A Volt Ohmmeter or DVM is required for several assembly steps

6) A magnifying glass is very helpful

7) Power supply providing a voltage between 8 to 13 VDC (9VDC is optimum) at about 250 ma.

8) Audio signal generator or radio receiver with a calibrate function.

It is very important to take your time and to carefully follow the instructions and assembly photos.

These instructions will take you through a step by step process that will test portions as you go. This will make

debugging much easier since if a problem arises you will be able to locate the source and repair it right away.

Please don’t assemble the kit in a manner other than as described, the order of the steps is very important from

a mechanical perspective and if you don’t follow them you can end up with a kit that can’t be completed.

These instructions assume you have basic electronic kit building experience and can identify different types of

electronic components. Photos are provided which will greatly aid in assembling the kit correctly. Additional info

is provided in RED. The biggest enemy of kit success is poor soldering, so please take care with each solder

joint, and use just enough heat to get a good connection. A good joint should be both shiny and smooth.

Bill of Materials

The bill of materials is listed below. The first step is to inventory and identify all parts ahead of time. This will

allow the assembly to proceed smoothly. The parts are packed in separate compartments; try not to mix the

resistors in different compartments together, the precision resistors are packed by themselves. You might want

to verify resistor values with an ohmmeter if you are color impaired like I am. We try to do a good job putting the

kits together but sometimes we make mistakes, let us know if you are missing any parts.

Reference Des. Qty Part Description Package Other Info Check Off

C1,C2,C4,C5 6 .001uF Capacitor (102) Ceramic Disk .2” spacing _________

C16,C17

C3,C9,C11,C14 4 .1uF,Capacitor (104) Ceramic Disk .2” spacing _________

C6,C12,C18 6 .01uF,Capacitor (103) Ceramic .2” spacing _________

C19,C20,C21

C10,C13 2 .012uF Mylar Cap (123) Mylar film .2” spacing _________

C7, C8 2 4.7uF Electrolytic Cap Radial .1” Spacing _________

C15 1 100uF Electrolytic Cap Radial .1” Spacing _________

R1 1 5K Trimmer Potentiometer _________

R5 1 68 Ohm Resistor 1/4 Watt Blu Gray Blk _________

R13,R14,R15,R16, 4 470 Ohm Resistor 1/8 Watt Yel Violet Brn _________

R2,R3,R4,R6,R11, 9 4.7K Ohm Resistor 1/8 Watt Yel Violet Red _________

R12,R17,R18,R21

R10 1 47 ohm 1/2 Watt Yel Violet Blk _________

R9 1 6.65K Ohm 1% Resistor 1/8 Watt Blue Axial _________

R8 1 33.2K Ohm 1% Resistor 1/8 Watt Blue Axial _________

R7 1 66.5K Ohm 1% Resistor 1/8 Watt Blue Axial _________

1 2 3 4 5 6 ... 34 35

Summary of Contents

Page 1 - Bill of Materials

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 1 Introduction

Page 2

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 10 ___ Install a

Page 3

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 11 header into t

Page 4

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 12 15) Now inst

Page 5

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 13 17) Insert t

Page 6

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 14 19) Install

Page 7

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 15 21) Then pla

Page 8

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 16 23) Now remo

Page 9

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 17 25) Remove t

Page 10

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 18 26) To test

Page 11

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 19 29) Next tin

Page 12

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 2 U1 1 Solid

Page 13

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 20 31) Then sol

Page 14

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 21 it’s easy to

Page 15

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 22 36) Now is t

Page 16

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 23 37) To insta

Page 17

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 24 Completed U

Page 18

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 25 CW Keyboard T

Page 19

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 26 The Keyer PIC

Page 20

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 27 K42 PCB Rev

Page 21

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 28 Figure 4 - K

Page 22 - 8-14 VDC

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 29 Figure 6 -

Page 23

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 3 Step By Step A

Page 24

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 30 Figure 8 -

Page 25 - Output to Keyer PIC

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 31

Page 26 - Dr ive r

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 32

Page 27 - K42 PCB Rev C PC Board

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 33

Page 28 - Figure 5 – K42 Silkscreen

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 34

Page 29

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 35

Page 30

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 4 3) Once these

Page 31

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 5 5) Install

Page 32

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 6 7) Test th

Page 33

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 7 first, tack so

Page 34

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 8 12) We can’

Page 35

K1EL K42 CW Keyboard/Reader Kit Assembly Guide Revision A.5 K42 Kit Assembly Guide RevC PCB 6/13/2014 Page 9 enter ALT-F1 t

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