Ramsey Electronics FM10A User Manual

FM STEREO
TRANSMITTER
Ramsey Electronics Model No. FM10A
• Great for transmitting your tape deck or CD player throughout the
house, yard or even your car.
• Powerful enough for college or neighborhood radio stations - in
use all over the world.
• Fantastic audio quality sounds better than most stations on the
dial. And we’ll tell you why!
• Easily connects to the line-level outputs on any tape deck, stereo
system or CD player.
• Some users hook up one channel to the scanner and the other to
their two way radio. Now you can hear what’s going on around
town up to several blocks away from your house with a simple
stereo receiver... and adjust the volume of each individually with
your balance control!
• Add a mike-mixer and tape or CD deck for a “PRO” sounding radio
station.
• Operates on 1.5 to 15 volts, using a crystal controlled subcarrier.
• Tunable anywhere in the 88-108 MHz FM band.
• Clear, concise instructions guide you step by step.
Own and operate your own FM Stereo broadcast station.
Definitely not a toy, the FM-10A has an exceptional transmission
range... and the audio quality puts your favorite radio station to
shame. See why this is one of our most popular kits!

Ramsey Electronics FM10A Specifications

General

Brand	Ramsey Electronics
Model	FM10A
Category	Transmitter
Language	English

Summary

INTRODUCTION

CIRCUIT DESCRIPTION

PARTS LIST

FM10A PARTS LAYOUT DIAGRAM

ASSEMBLY INSTRUCTIONS

Building your FM10A Stereo Transmitter

Overview of the assembly process, tailored for newcomers to electronics kits.

First assembly steps

Initial steps focusing on component installation for board orientation and practice.

Wiring the audio input circuits

Instructions for connecting audio input components and setting pre-emphasis characteristics.

RF amplifier and final components

Guide for installing the RF amplifier transistor and other final components.

FM10A frequency range selection

CHOOSING AN OPERATING FREQUENCY

ADJUSTING YOUR FM10A TRANSMITTER

Transmitting Frequency

Procedure for tuning the transmitter to an open frequency using the alignment screwdriver.

Audio Connection

Guidance on connecting audio sources and adjusting input levels for optimal sound.

Stereo balance

Instructions for adjusting the stereo balance potentiometer for correct channel output.

USING THE FM10A WITHIN THE HOME

POWER SUPPLY CONSIDERATIONS

L.E.D. "POWER ON" INDICATOR

EXPERIMENTAL "BROADCASTING" PROJECTS

ANTENNA IDEAS

ANTENNA ALTERNATIVES

TROUBLESHOOTING GUIDE

APPENDIX A: FCC RULES AND INFORMATION

APPENDIX B: UNDERSTANDING LEGAL "FIELD STRENGTH"

Why talk about acres

Explains the translation of field strength measurements into practical coverage areas in acres.

SUMMARY

Lawful use suggestions for the FM10A

Recommendations for legal operation, kit adherence, and responsible usage of the transmitter.

NOTICE

Important notice regarding device operation, interference, and compliance with FCC rules.

Final comment

Concluding remarks on FCC rules, radio experimentation, and Ramsey kits.

The Ramsey Kit Warranty

DEFECTIVE PARTS

Procedure for handling and replacing defective kit components within the warranty period.

MISSING PARTS

Guidelines for reporting and receiving missing or incorrect kit parts with proof of purchase.

FACTORY REPAIR OF ASSEMBLED KITS

Conditions and procedures for sending assembled kits to the factory for repair services.

REFUNDS

Policy and process for returning unassembled kits for a full refund within ten days.