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Micro908 Antenna Analyst “Assembly Manual”, v2

CONTENTS

Section 1:

Introduction ......................................................................................................... 2

Section 2:

Parts Inventory .................................................................................................... 3

Section 3:

PCB Preparation ................................................................................................. 8

Section 4:

Installing the Surface Mount Components ........................................................ 10

Section 5:

Installing the Controls and Connectors.............................................................. 15

Section 6:

Power-up and Test ............................................................................................ 20

Section 7:

Installing the PC Board in the Enclosure........................................................... 21

Section 8:

Troubleshooting

................................................................................................

Appendix A:

Parts List ........................................................................................................... 26

Appendix B:

Schematic

..........................................................................................................

Appendix C:

Component Layout ........................................................................................... 31

Appendix D:

Fully-Assembled PC Board .............................................................................. 33

Appendix E:

Mechanical Assembly Diagram ........................................................................ 34

Appendix F:

Quick Reference Sheet ..................................................................................... 35

Appendix G:

Loading New Software into the Micro908 ....................................................... 36

Appendix H:

Making a Dummy Antenna for Testing ............................................................ 37

Section 1: Introduction

Welcome to the Micro908 Antenna Analyst Kit, a reprogrammable and multi-use microcontrolled instrument that will
provide years of reliable service in both the shack and the field when constructed according to this assembly guide.

This project involves the soldering of small surface mount technology (SMT) parts and other delicate components to a
printed circuit card, and it will take about six hours to assemble – perhaps several evenings or over a weekend. Once the kit
is assembled, the pre-programmed controller (the HC908 Daughtercard) may be inserted into place and immediate
indication of product operation will be seen.

This Assembly Manual provides detailed, step-by-step instructions on preparation of the components, installation of them
to the printed circuit board and enclosure, and basic calibration and operation of the instrument. Other documents provided
on the enclosed CDROM describe the technical overview and more detailed usage. Several useful software programs are
also contained on this Micro908 Resource CDROM, such as a software loader application and a terminal program.
Additionally, the CD contains information and full software source code that will be useful for those wishing to develop
custom software for the Micro908 platform.

Please regularly visit the Micro908 project website (

www.amqrp.org/kits/micro908

) to download updated versions of the

software, manuals and schematics. We are also maintaining a list of frequently asked questions (and answers) that will
surely be of help to you in building and using this kit. An even more complete and up to date Assembly Manual, with
additional photos (all in color) may be found at the Micro908 online site.

We’ve made every effort possible within reason to make construction and use of the Micro908 Antenna Analyst a success
for the builder. Please let us know how it works out for you or if you have any questions along the way. We thank you for
purchasing the Micro908 Kit from the AmQRP Club and we wish you good luck in building and using it!

Sincerely yours,

“The Micro908 Team”

George Heron, N2APB

[email protected]

Joe Ev erhart, N2CX

[email protected]

Tom (W8KOX) & Nancy (NJ8B) Feeny,

[email protected]

David Willmore, N0YMV,

[email protected]