Assessments - 4, GPA: 3.5
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A convenient, nature friendly method of keeping animals away from where you don’t want them .. Around 4 watts of screaming high frequency audio. Inaudible to humans, but a terror to animals. .. 3 settings for different levels of coverage .. Built-in piezo high efficiency speaker .. External trigger input for use with motion sensors and other detectors. .. Operates on 9 to 15 volts DC or AC. .. LED indicator shows when unit is operating. .. Informative manual answers questions on theory, hookups and uses - enhances resale value, too! .. Add our rugged metal case for years of outdoor or indoor use. PARTIAL LIST OF AVAILABLE KITS: RAMSEY TRANSMITTER KITS · FM10C, FM25B FM Stereo Transmitters · AM1C, AM25 Transmitter RAMSEY RECEIVER KITS · FR1C FM Broadcast Receiver · AR1C Aircraft Band Receiver · AR2 Aircraft Band Receiver · SR2C Shortwave Receiver · AA7C Active Antenna · SC1C Shortwave Converter RAMSEY HOBBY KITS · SG7 Personal Speed Radar · SS70C Speech Scrambler/ Descrambler · TT1C Telephone Recorder · MD3C Microwave Motion Detector RAMSEY AUDIO KITS · SHA1C and SHA2 Headphone Amplifier kits · UAM4 40 Watt Stereo Amplifier kit RAMSEY AMATEUR RADIO KITS · HR Series HF All Mode Receivers · DDF1 Doppler Direction Finder Kit · QRP Series HF CW Transmitters · CW7C CW Keyer · QRP Power Amplifiers RAMSEY MINI-KITS Many other kits are available for hobby, school, scouts and just plain FUN! New kits are always under development. Write, call or visit for our free Ramsey catalog. RB1 RAT BLASTER INSTRUCTION MANUAL Ramsey Electronics publication No. MRB1 Revision 1.1 This Printing: July 2010 COPYRIGHT 2006-2010 by Ramsey Electronics, LLC, 590 Fishers Station Drive, Victor, New York 14564. All rights reserved. No portion of this publication may be copied or duplicated without the written permission of Ramsey Electronics, LLC. Printed in the United States of America. Ramsey Publication No. MRB1 Price $5.00 KIT ASSEMBLY AND INSTRUCTION MANUAL FOR RB1 RAT BLASTER TABLE OF CONTENTS Introduction ..................................... 4 How Does It Work? ......................... 5 Learn As You Build ......................... 6 Parts List ......................................... 7 Parts Layout Diagram ..................... 8 Construction.................................... 9 Schematic Diagram ...................... 10 Initial Testing ................................. 15 Troubleshooting ............................ 16 Warranty ....................................... 19 RAMSEY ELECTRONICS, LLC 590 Fishers Station Drive Victor, New York 14564 Phone (585) 924-4560 Fax (585) 924-4555 RB1 ..3 INTRODUCTION TO THE RB1 RAT BLASTER This is a practical project for people with problems with furry intruders in their yard, not just rats. The Rat Blaster is useful in repelling all kinds of wildlife. The list includes deer, dogs, cats, all rodents, and even some insects. This is the safest, most effective way to repel animals from eating your shrubbery or burrowing in your carrot patch. It is also a great help at keeping little surprises out of your lawn left by the neighbor’s pets. Instead of just generating a single constant tone like many competitive units on the market, the RB1 creates a warble tone that varies in frequency. This sound is enough to drive any person crazy if they could hear it. When the RB1 was in its design stages, the frequency was low enough to hear. Three offices up and two doors between was not enough to prevent irritation and complaints from associates. Just imagine what it can do with no obstructions! This unit is set outside facing the area desired to be protected. It then covers an area in the shape of an oval. On the low frequency setting, it will cover an area of approximately 4000 square feet. On the high frequency setting, it covers an area of around 2500 square feet. The advantage of running the high frequency setting is that it is well out of the human hearing range. The low frequency setting is just at the limit of hearing and can be irritating to some people with acute hearing. The reason the low frequency signals cover a larger area is due to a combination of how good the animals ears are, and how directional the sound is from the transducer. Built into an easy to mount case of durable construction, the Rat Blaster will operate for years, providing your yard and garden with animal protection. This is truly the gardener’s dream come true! RB1 ..4 HOW DOES IT WORK? Here is where we get into a little circuit analysis. If you just want to plug it in and start scaring off critters, you can skip this section. Otherwise here is some insight into why and how this RB1 works. We will use the schematic located at the center of the manual to analyze the circuit. We will begin with the IC marked NE555, U1. This is a simple, free running oscillator circuit which is used to generate the lower frequency warble rate of the signal. This rate varies from around 1Hz to 10Hz. The output ...